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Spectrophotometric method for the determination of total nitrogen

Spectrophotometric method for the determination of total nitrogen, Total:498 items.

In the international standard classification, Spectrophotometric method for the determination of total nitrogen involves: Ferrous metals, Tea. Coffee. Cocoa, Water quality, Vocabularies, Metalliferous minerals, Non-ferrous metals, Soil quality. Pedology, Cereals, pulses and derived products, Pesticides and other agrochemicals, Sugar. Sugar products. Starch, Animal feeding stuffs, Non-metalliferous minerals, Milk and milk products, Inorganic chemicals, Test conditions and procedures in general, Farming and forestry, Fertilizers, Pharmaceutics, Insulating fluids, Air quality, Analytical chemistry, Testing of metals, Nuclear energy engineering, Ferroalloys, General methods of tests and analysis for food products, Welding, brazing and soldering, Burners. Boilers, Materials for the reinforcement of composites, Conducting materials, Measurement of fluid flow, Laboratory medicine, Environmental protection, Lamps and related equipment, Fruits. Vegetables, Solar energy engineering, Products of the chemical industry, Organic chemicals, Wastes, Geology. Meteorology. Hydrology, Leather technology, Food products in general, Raw materials for rubber and plastics, Refractories, Paint ingredients, Meat, meat products and other animal produce, Spices and condiments. Food additives, Iron and steel products, Petroleum products in general, Tobacco, tobacco products and related equipment, Coals.

Association Francaise de Normalisation, Spectrophotometric method for the determination of total nitrogen

NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF V18-106*NF ISO 6491:2011 Animal feeding stuffs - Determination of phosphorus content - Spectrophotometric method
NF V18-106:1980 Animal feeding stuffs. Determination of total phosphorus content. Spectrophotometric method.
NF A06-323:1987 Chemical analysis of steels. Determination of nitrogen content. Molecular absorption spectrophotometric method.
NF T20-297:1971 Chemical analysis of sulphuric acid and oleum. Determination of ammoniacal nitrogen. Spectrophotometric method.
NF X43-339*NF ISO 11564:2000 Stationary source emissions - Determination of the mass concentration of nitrogen oxides - Naphthylethylenediamine photometric method.
NF T90-080:1997 Water quality - Determination of ammonium nitrogen by flow analysis (CFA and FIA) and spectrometric detection.
NF V03-613*NF EN ISO 3946:1994 Starches and derived products. Determination of total phosphorus content. Spectrophotometric method.
NF V03-608*NF EN ISO 5378:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.
NF EN ISO 5378:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode spectrophotométrique.
NF A06-373*NF EN 10179:1989 Chemical analysis of ferrous materials. Determination of nitrogen (trace amounts) in steels. Spectrophotometric method.
NF T90-026:1993 Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method.
NF EN 16318/IN1:2016 Engrais - Dosage des éléments trace - Dosage du chrome (VI) par spectrophotométrie (méthode A) et chromatographie ionique avec détection spectrophotométrique (méthode B)
NF EN 16318+A1:2016 Engrais - Dosage des éléments trace - Dosage du chrome (VI) par spectrophotométrie (méthode A) et chromatographie ionique avec détection spectrophotométrique (méthode B)
NF A06-612:2018 Magnesium - Determination of copper - Spectrophotometric method
NF EN 62805-1:2017 Méthode de mesure du verre photovoltaïque (PV) Partie 1 : Mesurage de la brume totale et de la répartition spectrale de la brume
NF EN ISO 3946:1994 Amidons, fécules et produits dérivés - Détermination de la teneur en phosphore total - Méthode spectrophotométrique.
NF U42-421*NF EN 16318+A1:2016 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)
NF U42-421:2014 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)
NF A06-613:2018 Magnesium alloys - Determination of copper - Spectrophotometric method
NF U42-421/IN1*NF EN 16318/IN1:2016 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)

German Institute for Standardization, Spectrophotometric method for the determination of total nitrogen

DIN EN ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN 10179:2023-07 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10179 (1990-04).
DIN EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN EN 10179:1990 Chemical analysis of ferrous materials; determination of nitrogen (trace amounts) in steels; spectrophotometric method; German version EN 10179:1989
DIN EN 10179:1990-04 Chemical analysis of ferrous materials; determination of nitrogen (trace amounts) in steels; spectrophotometric method; German version EN 10179:1989
DIN ISO 3946:1986 Starches and derived products; determination of the total phosphorus content; spectrophotometric method; identical with ISO 3946, edition 1982
DIN EN 10178:2023-07 Steels - Determination of niobium - Spectrophotometric method; German and English version prEN 10178:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10178 (1990-04).

ES-UNE, Spectrophotometric method for the determination of total nitrogen

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
UNE-EN 62805-1:2017 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze (Endorsed by Asociación Española de Normalización in October of 2018.)

KR-KS, Spectrophotometric method for the determination of total nitrogen

KS D ISO 4945-2022 Steel — Determination of nitrogen — Spectrophotometric method
KS I ISO 6332-2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS E ISO 6607-2021 Aluminium ores — Determination of total silicon content —Combined gravimetric and spectrophotometric method

CZ-CSN, Spectrophotometric method for the determination of total nitrogen

CSN 65 1025 Cast.10-1989 Sulphuric acid for industrial use. pectrophotometric method for the etermination of total nitrogen xides
CSN ISO 6332:1995 Water quality - Determination of iron - Spectrometric method using 1,10-phenantroline
CSN 56 0186-8-1995 Methods of test for beer. Colour determination by spectrophotometric method
CSN EN 10 179-1993 Chemical analysis of ferrous metals — Determination of nitrogen (trace amounts) in steels — Spectrophotometric method
CSN 72 0120 Z1-1997
CSN 72 0112 Cast.3 Z1-1997
CSN 68 4075-1983 Met hod for determination of specific otatien
CSN ISO 9061:1992 Acid-grade and ceramic-grade fluorspar - Determination of iron content - 1,10-Phenantroline spectrometric method

CEN - European Committee for Standardization, Spectrophotometric method for the determination of total nitrogen

EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

British Standards Institution (BSI), Spectrophotometric method for the determination of total nitrogen

BS EN ISO 4945:2010 Steel. Determination of nitrogen content. Spectrophotometric method
BS EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
BS EN ISO 4945:2018 Tracked Changes. Steel. Determination of nitrogen. Spectrophotometric method
23/30472739 DC BS EN 10179. Steels. Determination of nitrogen (trace amounts). Spectrophotometric method
BS EN 62805-1:2017 Method for measuring photovoltaic (PV) glass - Measurement of total haze and spectral distribution of haze
BS 6200-3.22.3:1986 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method (for trace amounts)
BS 7020-13:1988 Analysis of iron ores. Method for the determination of arsenic content. Spectrophotometric method
BS EN 16318:2013 Fertilizers. Determination of trace elements. Determination of chromiumVI by photometry method A and by ion chromatography with spectrophotometric detection method B
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS 6200 SubSec.3.22.2:1985 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method
BS 6870-2.7:1987 Analysis of aluminium ores. Chemical methods. Method for determination of titanium content: spectrophotometric method
BS 7020-13:1989 Analysis of iron ores. Method for the determination of arsenic content. Spectrophotometric method
BS 7020-12:1989 Analysis of iron ores - Method for the determination of titanium content: spectrophotometric method
BS 7020-12:1988 Analysis of iron ores - Method for the determination of titanium content: spectrophotometric method
BS ISO 19043:2015 Natural rubber latex concentrate. Determination of total phosphate content by spectrophotometric method
BS 6200 SubSec.3.22.3:1986 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method (for trace amounts)

International Organization for Standardization (ISO), Spectrophotometric method for the determination of total nitrogen

ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 6491:1980 Animal feeding stuffs; Determination of total phosphorus content; Spectrophotometric method
ISO 6332:1982 Water analysis — Determination of iron — 1,10-phenanthroline photometric method
ISO 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
ISO 3946:1982 Starches and derived products; Determination of total phosphorus content; Spectrophotometric method
ISO 2899:1974 Sulphuric acid and oleums for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 6607:1985 Aluminium ores; Determination of total silicon content; Combined gravimetric and spectrophotometric method
ISO 5400:1984 | IULTCS Leather — Determination of total silicon content — Reduced molybdosilicate spectrometric method
ISO 11564:1998/cor 1:2000 Stationary source emissions - Determination of the mass concentration of nitrogen oxides - Naphthylethylenediamine photometric method; Technical Corrigendum 1
ISO 19043:2015 Natural rubber latex concentrate - Determination of total phosphate content by spectrophotometric method
ISO 1053:1975 Zinc; Determination of copper content; Spectrophotometric method

European Committee for Standardization (CEN), Spectrophotometric method for the determination of total nitrogen

EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
EN 10179:1989 Chemical Analysis of Ferrous Materials - Determination of Nitrogen (Trace Mounts) in Steel Spectrophotometric Method
EN 16318:2013 Fertilizers and liming materials - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B) (Incorporates Amandment A1: 2016)
PD CEN/TS 16318:2012 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)

Korean Agency for Technology and Standards (KATS), Spectrophotometric method for the determination of total nitrogen

KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS I ISO 6332:2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS D ISO 1812-2002(2017) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS D ISO 1812-2002(2022) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS E ISO 6607-2011(2016) Aluminium ores－Determination of total silicon content－Combined gravimetric and spectrophotometric method
KS I ISO 11564:2004 Stationary source emissions-Determination of the mass concentrationof nitrogen oxides(Naphthylethylenediamine photometric method)
KS I ISO 11564:2014 Stationary source emissions — Determination of the mass concentration of nitrogen oxides(naphthylethylenediamine photometric method)
KS C 7605-1967 Photometric measurement on standard fluorescent lamps
KS H ISO 3946-2008(2018) Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS H ISO 5378:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 3946:2008 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS M ISO 5400-2012(2017) Leather－Determination of total silicon content－Reduced molybdosilicate spectrometric method
KS C 7606-1977 Photometric measurement on standard mercury- arc lamps
KS E ISO 6607:2011 Aluminium ores－Determination of total silicon content－Combined gravimetric and spectrophotometric method
KS E ISO 6607:2021 Aluminium ores — Determination of total silicon content —Combined gravimetric and spectrophotometric method
KS D ISO 793-2002(2017) Aluminium and aluminium alloys－Determination of iron－Orthophenanthroline photometric method
KS D ISO 1053-2002(2007) Zinc－Determination of copper content?Spectrophotometric method
KS I ISO 13395-2008(2018) Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

Danish Standards Foundation, Spectrophotometric method for the determination of total nitrogen

DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN ISO 3946:1995 Starches and derived products - Determination of total phosphorus content - Spectrophometric method
DS/ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
DS/EN 26595:1993 Water quality. Determination of total arsenic. Silver diethyldithiocarbamate spectrophotometric method

RO-ASRO, Spectrophotometric method for the determination of total nitrogen

STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method
STAS SR EN 10179-1994 Chemicat analysis of ferrous materials - Determination of nitrogen (trace amounts) in steel - Spectrophotometric method
STAS SR 9763-13-1996 Spices and condiments. Determination of nitrogen content by the Kjeldahl method. Spectrophotometric method
SR ISO 6685:1996 Chemical products for industrial use-General method for determination of iron content - 1,10 - Phenanthroline spectrophotometric method

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Spectrophotometric method for the determination of total nitrogen

GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 6730.24-2006 Iron ores Determination of total rare earth contentd Chlorophosphonazo mA spectrophotometric method
GB/T 20931.9-2007 Methods for chemical analysis of lithium Determination of nitrogen content Mercuric potassium iodide spectrophotometric method
GB/T 7493-1987 Water quality--Determination of nitrogen (nitrite)--Spectrophotometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil - Ultraviolet spectrophotometry method
GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content
GB/T 20931.4-2007 Methods for chemical analysis of lithium Determination of iron content Orthopenanthroline spectrophotometric method
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 6437-2002 Determination of phosphorus in feed--Spectphotometry
GB/T 8220.2-1998 Methods for chemical analysis bismuth--Determination of iron content--1,10-Phenanthroline photometric method
GB/T 223.49-1994 Methods for chemical analysis of iron,steel and alloy. Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content
GB/T 6987.24-2001 Aluminium and aluminium alloys--Determination of the cerium subgroup of rare earth elements content--Tribromoarsenazo spectrophotometric method
GB/T 20574-2006 Method for determination of total flavonoids in propolis. Colorimetric method
GB/T 7480-1987 Water quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid
GB/T 5195.10-2006 Fluorspar. Determination of iron content. 1,10-phenanthroline spectrophotometric method
GB/T 11893-1989 Water quality--Determination of total phosphorus--Ammonium molybdate spectrophotometric method
GB/T 14849.1-1993 Silicon metal.Determination of iron content.1,10-Phenanthroline spectrophotometric method
GB/T 4324.6-2012 Methods for chemical analysis of tungsten.Part 6:Determination of iron content.1,10-phenanthroline spectrophotometry
GB/T 3260.2-2013 Methods for chemical analysis of tin.Part 2:Determination of iron content.1,10-phenanthroline photometric method
GB/T 16032-1995 Workplace air--Determination of nitrogen oxides--Naphthyl ethylenediamine dihydrochloride spectrophotometric method
GB/T 11843-1989 Uranium dioxide powder and pellets--Determination of nitrogen--Spectrophotometric method
GB/T 24583.5-2009 Vanadium-Nitrogen alloy.Determination of phosphorus content.The bismuth molybdenum blue spectrophotometry method
GB 11843-1989 Determination of Nitrogen in Uranium Dioxide Powder and Pellets Spectrophotometric Method
GB/T 10574.5-1989 Tin-lead solders--Determination of iron content--1,10-phenanthroline spectrophotometric method
GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium—Part 4:Determination of iron content—1,10-Phenanthroline spectrophotometry
GB/T 4324.26-1984 Methods for chemical analysis of tungsten--The Nessler reagent photometric method for the determination of nitrogen content
GB/T 4325.26-1984 Methods for chemical analysis of molybdenum--The nessler reagent photometric method for the determination of nitrogen content
GB/T 13748.9-2005 Chemical analysis methods of magnesium and magnesium alloys.Determination of iron content.Orthopenanthroline spectrophotometric method
GB/T 14422-1993 Analysis of water used in boiler and cooling system. Determination of benzotriazole. Ultraviolet spectrophotometry
GB/T 6987.4-2001 Aluminium and aluminium alloys--Determination of iron content--Orthopenanthroline photometric method
GB/T 7315.3-1987 Methods for chamical analysis of vanadium pentixide--The ortho-phenanthroline spectrophotometric method forthe determination of iron content
GB/T 13747.2-1992 Zirconium and zirconium alloys--Determination of iron content--1,10-phenanthroline spectrophotometric method
GB/T 13748.4-1992 Magnesium and its alloys--Determination of cerium content--Tribromoarsenazo spectrophotometric method
GB/T 13748.5-1992 Magnesium and its alloys--Determination of iron content--Orthophenanthroline spectrophotometric method
GB/T 23278.2-2009 Methods for chemical analysis of sodium stannate.Part 2:Determination of iron content.1,10-phenanthroline photometric method
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
GB/T 7468-1987 Water quality--Determination of total mercury--Cold atomic absorption spectrophotometry
GB 7468-1987 Determination of Total Mercury in Water Quality by Cold Atomic Absorption Spectrophotometry
GB/T 4324.6-1984 Methods for chemical analysis of tungsten--The ortho-phenanthroline photometric method for the determination of iron content
GB/T 4325.15-1984 Methods for chemical analysis of molybdenum--The chlorophosphonazo 1 photometric method for the determination of magnesium content
GB/T 4325.6-1984 Methods for chemical analysis of molybdenum--The ortho-phenanthroline photometric method for the determination of iron content
GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content
GB/T 3253.2-2008 Methods for chemical analysis of antimony and antimony trioxide.Determination of iron content.Orthophenanthroline spectrophotometric method
GB/T 12689.11-2004 The methods for chemical analysis of zinc and zinc alloys-The determination of lanthanum and cerium contents-The tri-bromide arsenazo spectrophotometric method
GB 223.49-1985 Methods for chemical analysis of iron,steel and alloy--The extraction separation-chlorophosphonazo mA photometric method for the determination of rare earth elements
GB/T 23274.2-2009 Methods for chemical analysis of stannic oxide.Part 2:Determination of iron content.1，10-phenanthroline photometric method
GB/T 14849.1-2007 Methods for chemical analysis of silicon metal-Part 1:Determination of iron content-1,10-Phenanthrolion spectrophotometric method
GB/T 223.70-2008 Iron,steel and alloy.Determination of iron contents. o-Phenanthroline spectrophotometric method
GB/T 4918-1985 Waste water from manufacturing process--Determination of total nitro compounds--Spectrophotometric method
GB/T 4699.3-2007 Ferrochromium, silicochromium and nitrogen-bearing ferrochromium.Determination of phosphorus content.Molybdobismuthylphosphoric blue speckophotometric method and the molybdenum blue spectrophotometric method
GB 10267.5-1988 Analytical method for calcium metal Distillation-Nessler reagent photometric determination of nitrogen
GB/T 10267.5-1988 Method for analysis of calcium metal--The determination of nitrogen by distillation--Nessler reagent photometric method
GB/T 4702.7-2016 Chromium metal.Determination of nitrogen content.Distillation-nessler reagent spectrophotometric method
GB/T 11198.11-1989 Sulphuric acid for industrial use--Determination of oxides of nitrogen-2.4-xylenol spectrophotometric method
GB/T 17136-1997 Soil quality--Determination of total mercury--Cold atomic absorption spectrophotometry
GB/T 7717.8-1994 Acrylonitrile for industrial use-Determination of content of total aldehydes-Spectrophotometric method
GB/T 15555.1-1995 Solid waste--Determination of total mercury--Cold atomic absorption spectrometry
GB/T 20975.4-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 4: Determination of iron content.Orthopenanthroline photometric method
GB/T 4698.2-1996 Sponge titanium, titanium and titanium alloys--Determination of iron content--1,10-Phenanthroline spectrophotometric method
GB/T 10574.7-1989 Tin-lead solders--Determination of copper content--2,9-dimethyl-1,10-phenanthroline spetrophotometric method
GB/T 8158.4-1987 Methods for chemical analysis of sodium fluoride--The 1,10-phenanthroline spectro photometric method for the determination of iron content
GB/T 8654.1-1988 Methods for chemical analysis of manganese metal--The ortho-phenanthroline photometric method for the determination of iron content
GB/T 13747.23-1992 Zirconium and zirconium alloys--Determination of nitrogen content--Distillation--Nessler reagent spectrophotometric method
GB/T 2441.2-2001 Determination of urea Determination of biuret content Spectrophotometric method
GB/T 5686.4-2022 Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal—Determination of phosphorus content—Molybdenum blue spectrophotometric method and bismuth phosphomolybdate b
GB/T 17137-1997 Soil quality--Determination of total chromium--Flame atomic absorption spectrophotometry
GB/T 15555.5-1995 Solid waste--Determination of total chromium--1,5-Diphenylcarbohydrazide spectrophotometric method
GB/T 13747.6-1992 Zirconium and zirconium alloys--Determination of copper content-2,9-dimethyl-1,10-phenanthroline spectrophotometric method
GB/T 12690.19-1990 Rare-earth metals and their oxides--Determination of iron content--1,10-phenanthroline spectrophotometric method
GB/T 4375.5-1984 Methods for chemical analysis of gallium--The N2O-C2H2flame atomic absorption spectrophotometric method for the determination of calcium content
GB/T 13748.8-1992 Magnesium and its alloys--Determination of copper content-2,9-dimethyl-1,10-phenanthroline spectrophotometric method
GB/T 13748.9-2013 Chemical analysis methods of magnesium and magnesium alloys.Part 9:Determination of iron content.Orthopenanthroline spectrophotometric method
GB/T 16077-1995 Workplace air--Determination of phosgene--Ultraviolet spectrophotometric method
GB/T 21994.7-2008 Chemical analysis of magnesium fluoride.Part 7:Determination of iron content.Orthophenantholine photometric method
GB/T 22660.7-2008 Chemical analysis methods of lithium fluoride.Part 7:Determination of iron content.Orthophenantholine photometric method
GB/T 18932.16-2003 Method for the determination of diastase number in honey-Spectrophotometric method
GB/T 17135-1997 Soil quality--Determination of total arsenic--Spectrophotometric method with potassium borohyride and silver nitrate
GB/T 30389-2013 Chillies and chilli oleoresins.Determination of total capsaicinoid content.Spectrophotometric methods
GB/T 4325.7-2013 Methods for chemical analysis of molybdenum.Part 7:Determination of iron content.1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry
GB/T 15400-1994 Determination of tryptophan in feedstuffs--Spectrophotometry
GB/T 2441.4-2001 Determination of urea Determination of iron content 1,10-Phenanthroline spectrophotometric method
GB/T 2441.9-2001 Determination of Urea-Determination of methylenediurea content-Spectrophotometric method
GB/T 11889-1989 Water quality--Determination of aniline compounds--Spectrophotometric method with N-(1-naphthyl) ethylenediamine
GB/T 6609.4-1986 Methods for chemical analysis of aluminium oxide--The orthophenanthroline photometric method for the determination of ferric oxide content
GB/T 4375.4-1984 Methods for chemical analysis of gallium--The 4,7-diphenyl-1,10-phenanthroline photometric method for the determination of iron content
GB/T 11066.10-2009 Methods for chemical analysis of gold.Determination of silicon content.Molybdenum blue spectrophotometry
GB/T 8647.3-2006 The methods for chemical analysis of nickel. Determination of silicon content. Molybdenum blue spectrophotometric method
GB/T 8647.4-2006 The methods for chemical analysis of nickel. Determination of phosphorous content. Molybdenum blue spectrophotometric method
GB/T 11067.4-1989 Silver--Determination of antimony content--2-(5-bromo -2-pyridylazo)-5-diethylaminophenol spectrophotometricmethod
GB 11067.4-1989 Silver—Determination of antimony content—2-(5-bromo-2-pyridylazo)-5-diethylaminophenol spectrometric method
GB/T 4698.7-1996 Sponge titanium, titanium and titanium alloys--Determination of nitrogen content--Distillation--Nessler reagent spectrophotometric method
GB/T 23226-2008 Cigarettes.Determination of alkaloids in smoke condenstes.Spectrometric method
GB/T 16484.4-2009 Chemical analysis methods of rare earth chloride and light rare earth carbonate.Part 4:Determination of thorium oxide content.ArsenazoⅢ spectrophotometry
GB 223.37-1989 Methods for chemical analysis of iron,steel and alloy The indophenol blue photometric methods for the determination of nitrogen content after distillation seperation
GB/T 223.37-1989 Methods for chemical analysis of iron,steel and alloy--The indophenol blue photometric methods for the determination of nitrogen content after distillation separation
GB/T 17777-2009 Determination of molybdenum in feeds-Spectrophotometry
GB/T 20931.5-2007 Methods for chemical analysis of lithium Determination of silicon content Molybdenum blue spectrophotometric method
GB/T 11064.7-1989 Lithium carbonate,lithium hydroxide monohydrate and lithium chloride--Determination of iron content--1.10-phenanthroline spectrophotometric method
GB/T 4375.2-1984 Methods for chemical analysis of gallium--The 4-(2-pyridylazo)-resorcinol photometric method for the determination of lead content
GB/T 8156.7-1987 Methods for chemical analysis of aluminium fluoride for industrial use--The 1,10-phenanthroline photometric method for the determination of iron content
GB/T 17777-1999 Determination of molybenum in feedstuff--Spectrophotometry
GB/T 4324.26-2012 Methods for chemical analysis of tungsten.Part 26:Determination of nitrogen content.Pulse heating inert gas fusion-thermal conductive method and the Nessler reagent spectrophotometry
GB/T 18932.6-2002 Method for the determination of glycerol contents in honey--UV spectrophotometric method
GB/T 7485-1987 Water quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometric method

Professional Standard - Environmental Protection, Spectrophotometric method for the determination of total nitrogen

HJ 667-2013 Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 668-2013 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 636-2012 Water quality.Determination of total nitrogen.Alkaline potassium persulfate digestion UV spectrophotometric method
HJ 1191-2021 Spectrophotometric method for the determination of water quality azide
HJ 536-2009 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry
HJ 550-2009 Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry
HJ 535-2009 Water quality.Determination of ammonia nitrogen.Nessler's reagent spectrophotometry
HJ/T 346-2007 Water quality. Determination of nitrate-nitrogen. Ultraviolet spectrophotometry
HJ/T 64.3-2001 stationary source emission.Determination of cadmium.p-Azobenzenediazoaminazobenzene sulfonic acid spectrophotometric method
HJ 665-2013 Water quality.Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry
HJ 666-2013 Water quality.Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry
HJ 634-2012 Soil.Determination of ammonium, nitrite and nitrate by extraction with potassium chloride solution-spectrophotometric methods
HJ 597-2011 Water quality- Determination of total mercury -Cold atomic absorption spectrophotometry
HJ 632-2011 Soil. Determination of Total Phosphorus by alkali fusion. Mo-Sb Anti spectrophotometric method
HJ/T 42-1999 Stationary source emission.Determination of nitrogen oxide.Ultraviolet spectrophotometric method
HJ/T 199-2005 Water quality Determination of tota-nitrogen Gas-phase molecular absorption spectrometry
HJ 712-2014 Solid waste.Determination of total phosphorus.Ammonium metamolybdate spectrophotometric method
HJ 745-2015 Soil－Determination of cyanide and total cyanide－Spectrometric method
HJ 491-2009 Soil quality.Determination of total chromium.Flame atomic absorption spectrometry
HJ 479-2009 Ambient air.Determination of nitrogen oxides.N-(1-Naphthyl)ethylene diamine dihydrochloride spectrophotometric method
HJ 671-2013 Water quality.Determination of total phosphorus.Flow injection Analysis (FIA) and Ammonium molybdate spectrophotometry
HJ 811-2016 Water quality―Determination of total selenium―3,3′-Diaminobenzidine spectrophotometric method
HJ 550-2015 Water quality.Determination of cobalt.5-Cl-PADAB Spectrophotometry
HJ 749-2015 Solid Waste-Determination of total chromium -Flame atomic absorption spectrometry
HJ/T 43-1999 Stationary source emission-Determination of nitrogen oxide-N-(1-naphthyl)-ethylenediamine dihydrochloride spectrophotometric method
HJ 750-2015 Determination of Total Chromium in Solid Waste - Graphite Furnace Atomic Absorption Spectrophotometry
HJ 479-2009(XG1-2018) Determination of nitrogen oxides (nitrogen monoxide and nitrogen dioxide) in ambient air Spectrophotometric method of naphthalene ethylenediamine hydrochloride "No. 1 Amendment"
HJ 595-2010 Water quality.Determination of the total amount of the color developing agent.169 Coupler spectrophotometry
HJ 670-2013 Water quality.Determination of orthophosphate and total phosphorus.Continuous flow analysis (CFA) and Ammonium molybdate spectrophotometry

Professional Standard - Water Conservancy, Spectrophotometric method for the determination of total nitrogen

SL 84-1994 Determination of nitrogen (nitrate)(Ultraviolet spectrophtometric method)
SL/T 272-2001 Water quality.Determination of total selenium.Iron(Ⅱ)-O-phenanthroline indirect spectrophotometry
SL 88-1994 Determination of chlorophyll(Spectrophotometric method)
SL 93.2-1994 Determination of oil and grease (Vitraviolet spectrophotometric method)
SL 92-1994 Determination of antimony (5-Br-PADAP spectrophotometric method)
SL/T 271-2001 Water quality - Determination of total mercury - Potassium borohydride reduction - Cold atomic absorption spectrophotmetry

TR-TSE, Spectrophotometric method for the determination of total nitrogen

TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method
TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method
TS 2918-1978 PHOSPHORIC ACID FOR INDUSTRIAL USE (INCLUDING FOODSTUFFS) — DETERMINATION OF OXIDES OF NITROGEN CONTENT — 3,4 — XYLENOL SPECTROPHOTOMETRY

中华人民共和国环境保护部, Spectrophotometric method for the determination of total nitrogen

GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
GB 7480-1987 Water quality-Determination of nitrate-Spectrophotometric method with phenol disulfonic acid
GB 11893-1989 Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method
GB 4918-1985 Waste Water from manufacturing process-Determination of total nitro compounds-Spectrophotometric method
GB 11894-1989 Water quality-Determination of total nitrogen-Alkaline potassium persulfate digestion-UV spectrophotometric method
GB 11889-1989 Water quality-Determination of auiline compounds-Spectrophotometric method with N-(1-naphthyl)echylenediamine
GB 7485-1987 Water quality-Determination of total arsenic-Silver diethyldithiocarbamate spectrophotometric method

Lithuanian Standards Office , Spectrophotometric method for the determination of total nitrogen

LST EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
LST EN 10179-2000 Chemical analysis of ferrous materials - Determination of nitrogen (trace mounts) in steel - Spectrophotometric method
LST EN ISO 3946:2000 Starches and derived products - Determination of total phosphorus content - Spectrophotometric method (ISO 3946:1982)

AENOR, Spectrophotometric method for the determination of total nitrogen

UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE 36317-2:1989 Chemical analysis of ferrous materials - Determination of nitrogen (trace mounts) in steel - Spectrophotometric method
UNE-EN ISO 5378:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDHAL METHOD. SPECTROPHOTOMETRIC METHOD. (ISO 5378:1978).
UNE-EN ISO 3946:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF TOTAL PHOSPHORUS CONTENT. SPECTROPHOTOMETRIC METHOD. (ISO 3946:1982).

ES-AENOR, Spectrophotometric method for the determination of total nitrogen

American Society for Testing and Materials (ASTM), Spectrophotometric method for the determination of total nitrogen

ASTM UOP276-85 Pyrrole Nitrogen in Petroleum Distillates by Visible Spectrophotometry
ASTM UOP682-84 Total Cyanide in Refinery Waters by Visible Spectrophotometry
ASTM D8083-16 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection

国家市场监督管理总局、中国国家标准化管理委员会, Spectrophotometric method for the determination of total nitrogen

GB/T 6437-2018 Determination of phosphorus in feeds—Spectrophotometry
GB/T 24583.5-2019 Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
GB/T 39544-2020 Natural rubber latex concentrate—Determination of total phosphate content—Spectrophotometric method
GB/T 13747.6-2019 Methods for chemical analysis of zirconium and zirconium alloys—Part 6：Determination of copper content—2,9-Dimethyl-1,10-phenanthroline spectrophotometry

Tianjin Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB12/T 847-2018 Spectrophotometric method for the determination of total sugar in feed

YU-JUS, Spectrophotometric method for the determination of total nitrogen

JUS H.B8.287-1983 Fertilizers. Determination of content amid-nitrogen. Spectrophotometric method
JUS H.B8.637-1981 Sulphuric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method
JUS C.A1.049-1989 Methods for chemical analysis of iron and steel. Determination of total silicon content between 0,05 and 1,0 %. Spectrophotometric method
JUS H.B8.043-1991 Liquid hydrocarbons. Determination of total chloride content. Spectrophotonetric method
JUS H.B8.636-1981 Sulphuric acid for industrial u se. Determination of oxides of nitrogen. 2,4-xyleno/ spectrophotometric method
JUS H.G8.418-1991 Reagents. Sodium hvdroxide. Determination of arsenic content. Silver diethvldithiocarbamate spectrophotometric method
JUS B.G8.518-1990 AluminiuB ores. Detemiuat ioa of total silicon content. Combived gravlmetric and spectrophotometric metbod
JUS H.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method
JUS C.A1.232-1990 Methods for chemical analysis of cadmium. Determination of copper content. Spectrophotometric method
JUS C.A1.234-1990 Methods for chemical analysis of cadinium. Determination of thallium content. Spectrophotometric method
JUS C.A1.239-1990 Methods for chemical analysis of cadmium. Determination of tin content. Spectrophotometric method
JUS H.G8.130-1984 Reagents. Ammonia solution. Determination of iron content. 1,10—Phenanthrolinespectrophotometric method
JUS C.A1.055-1986 Methods for chemical analysis of iron and steel. Determinatlon of manganese content Spectrophoto- metric method
JUS C.A1.056-1986 Methods for chemical analysis of iron and steel. Determination of phosphorus. Spectrophotometric meihod
JUS H.Z1.178-1985 Testing of industrial vvaters. Determination of total mercury content. Specirophotometric method with diphenyl-tiocarbazone
JUS C.A1.233-1990 Methods for chemical analysis of cadmium. Determination of lead content. Spectrophotometric method with dithizone
JUS H.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption spectrophotometric method
JUS E.Z8.014-1993 Soups,broaths,sauces and seasonings - Spectrophotometric determination of total creatinine content

Professional Standard - Urban Construction, Spectrophotometric method for the determination of total nitrogen

CJ/T 63-1999 Municipal sewage.Determination of aniline compounds.AZO spectrophotometric method
CJ/T 78-1999 Municipal sewage.Determination of total phosphorus.Spectrophotometric method
CJ/T 76-1999 Municipal sewage.Determination of nitrogen(nitrite).Sepectrophotometric method
CJ 26.13-1991 Municipal sewage water quality test method Determination of standard aniline Azo spectrophotometric method
CJ 26.26-1991 Municipal sewage water quality inspection method standard Determination of nitrite nitrogen spectrophotometric method
CJ 26.28-1991 Municipal sewage water quality inspection method standard Determination of total phosphorus spectrophotometric method
CJ/T 70-1999 Municipal sewage.Determination of total chromium.1.5 diphenylcarbohydrazide spectrophotometric method
CJ/T 3018.9-1993 Leachate.Determination of total phosphorus.Spectrophotometric molybdovanadophosphate method

Professional Standard - Agriculture, Spectrophotometric method for the determination of total nitrogen

NY/T 30-1986 Determination of rare earth oxide content in soil.Chlorophosphonazo-p-hippuric acid photometric method
GB 6260-1986 Determination of Total Oxidized Rare Earth in Soil Spectrophotometric Method for Azochlorophosphorus Hippurate
NY/T 1116-2006 Fertilizers-Determination of nitrate nitrogen content.UItraviolet spectro-photometric method
NY/T 2332-2013 Determination of total sugars in red ginseng.Spectrophotometry
SN/T 5658.3-2023
NY/T 1373-2007 Determination of Sulfite in Edible Fungus Distill under Nitrogen with the Method of Spectrophotometer
DBJ440100/T 43-2009 Determination of Total Chromium in Water Quality Graphite Furnace Atomic Absorption Spectrophotometry

Professional Standard - Non-ferrous Metal, Spectrophotometric method for the determination of total nitrogen

YS/T 74.7-1994 Cadmium Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 536.2-2006 Bismuth Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 74.7-2010 Mehtods for chemical analysis of cadmium- Part 7:Determination of iron content- 1,10-Phenanthroline spectrophotometry
YS/T 372.18-2006 Methods for elementary analysis of precious alloy. Determination of gadolinium content. Chlorophosphonazo Ⅲ spectrophotometry
YS/T 372.19-2006 Methods for elementary analysis of precious alloy. Determination of yttrium content.Chlorophosphonazo Ⅲ spectrophotometry
YS/T 575.14-2006 Chemical analysis method of bauxite ore-tribromoarsine spectrophotometric determination of total rare earth oxides
YS/T 535.4-2009 Chemical analysis methods of sodium fluoride.Part 4:Determination of iron content.1,10-phenanthroline spectrophotometric method
YS/T 575.14-2007 Methods for chemical analysis of bauxite.Part 14:Determination the total content of rare earth oxide.Tribromo-arsenazo photometric method
YS/T 239.6-2010 Methods for chemical analysis of antimony trisulfide- Part 6:Determination of iron content-Neighbouring phenanthroline spectrophotometric method
YS/T 520.4-2007 Chemical analysis of gallium.Part 4: Determination of iron content.The 4,7-diphenyl-1,10-phenanthroline spectrophotometric method
YS/T 535.4-2006 Sodium fluoride chemical analysis method o-phenanthrene spectrophotometric determination of iron content
YS/T 520.2-2007 Chemical analysis of gallium.Part 2: Determination of lead content.The 4-(2-pyridy lazo)-resorcinol spectrophotometric method
YS/T 746.16-2010 Methods for chemical analysis of lead-free tin-based solders- Part 16: Determination of total rare earth content- Arserazo Ⅲ spectrophotometry
YS/T 520.5-2006 Gallium Chemical Analysis Method for Determination of Calcium by Nitrous Oxide-Acetylene Flame Atomic Absorption Spectrophotometry
YS/T 1075.1-2015 Methods for chemical analysis of vanadium-aluminium and molybdenum-aluminium master alloys.Part 1:Determination of iron content.1,10-Phenanthroline spectrophotometry
YS/T 581.7-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 7:Determination of iron content by orthophenantholine photometric method
YS/T 273.7-2006 Chemical analysis methods and physical properties of cryolite. Part 7:Determination of iron content by orthophenantholine photometric method
YS/T 520.4-2006 Gallium Chemical Analysis Method 4,7-Diphenyl-1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 520.1-2007 Chemical analysis of gallium.Part 1:Determination of copper content.The 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline spectrophotometric method
YS/T 536.3-2009 Methods for chemical analysis of bismuth.Determination of antimony content.Melachite green photometric method
YS/T 520.2-2006 Gallium Chemical Analysis Method 4-(2-Pyridylazo)-Resorcinol Spectrophotometric Determination of Lead Content

Professional Standard - Geology, Spectrophotometric method for the determination of total nitrogen

DZ/T 0064.23-1993 Groundwater quality testing method Determination of iron by phenanthrene spectrophotometry
DZ/T 0064.23-2021 Analytical methods for groundwater quality - Part 23: Determination of iron content by phenanthroline spectrophotometric method
DZ/T 0064.57-2021 Analytical Methods of Groundwater Quality Part 57: Determination of Ammonia Nitrogen by Nessler's Reagent Spectrophotometry

Hunan Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB43/T 1403-2018 Water Quality Determination of Ammonia Nitrogen-Gas-liquid Separation and Collection Spectrophotometry
DB43/T 1404-2018 Determination of total cyanide in water and soil by gas-liquid separation and collection spectrophotometry

RU-GOST R, Spectrophotometric method for the determination of total nitrogen

GOST 31980-2012 Milk. Spectrometric method for determination of total phosphorus content
GOST 28902-1991 Animal feeding stuffs. Determination of total phosphorus content. Spectrophotometric method
GOST 31584-2012 Milk. Spectrophotometric method for determination of total phosphorus content
GOST 17.1.4.02-1990 Water. Spectrophotometric determination of chlorophyll a
GOST 30181.5-1994 Mineral fertilizers. Method for determination of mass fraction of amide nitrogen in compound fertilizers (spectrophotocolorimetric method)
GOST 32009-2013 Meat and meat products. Spectrophotometric method for determination of total phosphorous content
GOST R 51482-1999 Meat and meat products. Spectrophotometric method for determination of total phosphorus content
GOST 32246-2013 Hard coals. Method for the spectrometric determination of genetic and technological parameters

Group Standards of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method
T/CHES 27-2019 Water Quality Determination of Ammonia Nitrogen Automatic Analysis Nessler's Reagent Spectrophotometry
T/GDFDTAEC 03-2022 Determination of total ginsenosides in health food by Spectrophotometry
T/ZCSIA 8-2023 Determination of total polyphenol content in sweet potato leaves by spectrophotometric method
T/QAS 046-2021 Determination of total iron, ferrous iron and ferric iron in brine by phenanthroline spectrophotometric method
T/GDFDTAEC 05-2022 Determination of total flavonoids in propolis health food by Spectrophotometry
T/GDFDTAEC 06-2022 Determination of total triterpenoids in Ganoderma lucidum health food by Spectrophoto
T/NAIA 004-2020 Determination of Ammonia Nitrogen Concentration in Rumen Fluid Alkaline Sodium Hypochlorite-Phenol Spectrophotometry
T/ZCSIA 7-2023 Spectrophotometric method for determination of total phenolic content in large cherries and their products
T/ZCSIA 9-2023 Determination of total flavonoid content in strawberries and their products by spectrophotometric method
T/QAS 082.4-2023 Rock Salt and Glauber's Salt Chemical Analysis Part 4: Determination of Iron Phthalene Spectrophotometric Method
T/QAS 031-2021 Spectrophotometric method for the determination of iodine in brine
T/QAS 034-2021 Spectrophotometric method for determination of fluorine in brine
T/QAS 036-2021 Spectrophotometric method for the determination of bromine in brine
T/NAIA 080-2021 Ammonium molybdate spectrophotometric method for measuring total phosphorus in rivers with many sediments

Professional Standard - Aviation, Spectrophotometric method for the determination of total nitrogen

HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group
HB 5297.17-2001 Chemical Analysis Method of Titanium Alloy AzoarsenicⅢ Spectrophotometric Determination of Zirconium Content
HB 5297.20-2001 Chlorophosphine azo Ⅲ Spectrophotometric Method for Chemical Analysis of Titanium Alloy Determination of Cerium Content
HB 5422.23-1989 Determination of zirconium content by arsenazoⅢ absorptiophotometric method for chemical analysis of copper alloy
HB 5220.39-2008 Methods for chemical analysis of superalloys. Part 39: Determination of total rare earth content by PMBP direct extraction-arsenazo Ⅲ photometric method
HB 5220.42-1995 Determination of Cerium Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5220.43-1995 Determination of Lanthanum Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB/Z 5218.14-2004 Methods for chemical analysis of aluminium alloys-Part 14:Determination of the cerium subgroup of rare earth elements content by tribromoarsenazo spectrophtometric method
HB 5220.36-1995 Determination of Zirconium Content by Arsenazo Ⅲ Direct Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5297.13-1984 Determination of Cerium in Titanium Alloy Chlorophosphine Azo Ⅲ Absorption Spectrophotometry
HB 5220.42-2008 Methods for chemical analysis of superalloys. Part 42: Determination of cerium content by DBC-arsenazo photometric method
HB 5220.43-2008 Methods for chemical analysis of superalloys. Part 43: Determination of lanthanum content by DBC-arsenazo photometric method
HB 5220.38-1995 Extraction and Separation by Chemical Analysis Method of Superalloy - Determination of Cerium Content by ArsenazoⅢ Absorbance Spectrophotometry
HB 5220.48-1995 Superalloy Chemical Analysis Method Water Steam Distillation - Volumetric Method (or Absorptiometry) Determination of Nitrogen Content
HB 5219.19-1998 Determination of Cerium Content by Spectrophotometric Method of Tribromoarsine in Magnesium Alloy
HB 5220.36-2008 Methods for chemical analysis of superalloys. Part 36: Determination of zirconium content by arsenazo Ⅲ photometric method
HB 5220.38-2008 Methods for chemical analysis of superalloys. Part 38: Determination of cerium content by extraction separation-arsenazo Ⅲ photometric method
HB 5220.37-1995 Chemical analysis methods of superalloys Tantalum reagent-benzene extraction-ArsenazoⅢ Absorption photometry Determination of zirconium content
HB 5220.48-2008 Methods for chemical analysis of superalloys. Part 48: Determination of nitrogen content by water vapour distillation-volumetric method( or photometric method)

BE-NBN, Spectrophotometric method for the determination of total nitrogen

NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method
NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN T 91-256-1977 Water analysis methods - Determination of the nitrate nitrogen -Photometric method with chromotropic acid
NBN-EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
NBN T 91-254-1976 Water analysis methods - Determination of the ammoniacal nitrogen -Direct photometric methodwith sodium phenate
NBN T 04-304-1983 Urea for indus trial use - Determination of iron content-2,2'-Bipyridyl photometric method
NBN T 03-024-1979 Sulphuric acid and oleum for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN T 91-251-1976 Water analysis methods — Determination of the ammoniacal nitrogen — Direct photometric method with Nessler reagent
NBN-EN ISO 3946:1994 Starches and derived products - Determination of total phosphorus content - Spectrophotometric method (ISO 3946:1982)
NBN P 32-004-1977 Zinc - Determination of copper content -Spectrophotometric method
NBN T 03-270-1980 Phosphoric acid for industrial use (including foodstuffs)-Determi-nation of oxides of nitrogen content - 3,4-Xylenol spectrophotometric method

IT-UNI, Spectrophotometric method for the determination of total nitrogen

UNI 7336-1974 Chemical analysis of ferrous materials. Determination of nitrogen in steel. Spectrophotometric method.

NL-NEN, Spectrophotometric method for the determination of total nitrogen

NEN 2848-1986 Fruit juices - Determination of the total pectin content - Spectrophotometric method
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis
NEN 6483-1982 Water - Potentiometric determination of the total fluoride content
NEN 6489-1982 Water - Photometric determination of total cyanide content
NEN 6549-1988 Water for boiler plants Photometric determination of total hardness

工业和信息化部, Spectrophotometric method for the determination of total nitrogen

YS/T 540.4-2018 Methods for chemical analysis of vanadium Part 4: Determination of iron content 1,10-phenanthroline spectrophotometric method
YB/T 4582.3-2017 Determination of phosphorus content in silicon iron nitride bismuth phosphorus molybdenum blue spectrophotometry
YB/T 4582.6-2017 Determination of silicon ferromanganese nitride content sodium periodate spectrophotometry
YB/T 4566.6-2016 Determination of phosphorus content in vanadium iron nitride bismuth phosphorus molybdenum blue spectrophotometry
YB/T 5157-2016 Determination of iron in high-purity graphite products by phenanthroline spectrophotometry
YB/T 4582.2-2017 Determination of ferrochromium content in silicon nitride diphenylcarbazide spectrophotometric method
YB/T 4582.9-2017 Determination of titanium silicon nitride content diantipyrine methane spectrophotometry
YS/T 424.3-2022 Methods for chemical analysis of titanium diboride powder Part 3: Determination of iron content 1,10-phenanthroline spectrophotometric method

Hebei Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB13/T 2499.3-2017 Determination methods for liquid mixtures: Part 3: Determination of total phosphorus (ammonium molybdate spectrophotometric method)
DB13/T 2589-2017 Infrared Spectrophotometric Method for Determination of Industrial Fume Concentration

Professional Standard - Nuclear Industry, Spectrophotometric method for the determination of total nitrogen

EJ/T 20172-2018 Determination of Nitrogen in Sodium Cooled Fast Neutron Breeder Reactor by Spectrophotometry
EJ/T 814-1994 Determination of Thorium in Uranium Ore PMBP Extraction and Separation of Arsenazo Ⅲ Spectrophotometry

Professional Standard - Chemical Industry, Spectrophotometric method for the determination of total nitrogen

HG/T 4327-2012 Reclaimed water.Determination of total iron content.Spectrophotometric method
HG/T 2894-1997 Determination Method of Relative Strength of presscakes of Disperse Dyes

农业农村部, Spectrophotometric method for the determination of total nitrogen

NY/T 3676-2020 Determination of total triterpene content in Ganoderma lucidum by spectrophotometric method

Professional Standard - Rare Earth, Spectrophotometric method for the determination of total nitrogen

XB/T 601.7-1993 Lanthanum hexaboride chemical analysis method 1,10-phenanthrene-phenanthrene spectrophotometric determination of iron content

Japanese Industrial Standards Committee (JISC), Spectrophotometric method for the determination of total nitrogen

JIS G 1228-2:2022 Iron and steel -- Determination of nitrogen -- Part 2: Spectrophotometric methods after ammonium distillation separation

Professional Standard - Ferrous Metallurgy, Spectrophotometric method for the determination of total nitrogen

YB/T 5157-1993 Determination of iron in graphite products of high purity by ortho-phenathroline photometric method
YB/T 5330-2006 Vanadium pentoxide chemical analysis method o-phenanthroline spectrophotometric method for determination of iron content
YB/T 5191-2007 High pure graphite materials-Determination of total rare earths content-spectrophotometric
YB/T 5191-1993 Spectrophotometric determination method of total rare earth element content in high-purity graphite materials
YB/T 5330-2009 Determination of Ferrovanadium Pentoxide Content O-Phenanthroline Spectrophotometry
YB/T 190.8-2014 Continuous casting powder.The determination of iron content.The o-phenanthroline spectrophotometric method and the flame atomic absorption method

Yunnan Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB53/T 625-2014 Determination of Total Phosphorus in Coking Sewage by Phosphomolybdenum Blue Spectrophotometry

Professional Standard - Hygiene , Spectrophotometric method for the determination of total nitrogen

WS/T 36-1996 Urine.Determination of chromium.Spectrophotometric method
WS/T 43-1996 Urine.Determination of nickel.Spectrophotometric method
WS/T 48-1996 Urine.Determination of phenol.Spectrophotometric method
WS/T 52-1996 Urine.Determination of hippuric acid.Spectrophotometric method
WS/T 17-1996 Urine.Determination of leade.Spectrophotometric method-diphenylthiocarbazone method
WS/T 64-1996 Urine.Determination of trichloroacetic acid.Spectrophotometric method
WS/T 57-1996 Urine.Determination of 4-nitrophenol.Spectrophotometric method
WS/T 42-1996 Blood.Determination of carboxyhemoglobin.Spectrophotometric method
WS/T 24-1996 Spectrophotometric method for dithizone-extraction

Illuminating Engineering Society of North America, Spectrophotometric method for the determination of total nitrogen

IESNA LM-78-2007 Method for Total Luminous Flux Measurement of Lamps Using an Integrating Sphere Photometer

Ningxia Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB64/T 1082-2015 Determination of total flavonoids content in wolfberry - spectrophotometric colorimetry
DB64/T 1515-2017 Determination of Total Glucosides in Sheep Placenta Capsules by Ultraviolet Spectrophotometry

Jilin Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB22/T 1668-2012 Spectrophotometric Determination of Total Ginsenosides in Ginseng Food

Professional Standard - Commodity Inspection, Spectrophotometric method for the determination of total nitrogen

SN/T 4779.3-2017 Determination of total hardness in bottled water for export---Method by specrophotometry coupled with flow injection analysis(FIA)
SN/T 0860-2000 Method for the determination of selenium in canned mushroom for export.Fluorometry
SN/T 1788-2006 Determination of quinizarin - Extraction spectrophotometric method
SN/T 0850-2000 Method for the determination of proline in honey for import and export.Spectrophotometry

SE-SIS, Spectrophotometric method for the determination of total nitrogen

SIS SS-EN 10 179-1989 Chemical analysis of ferrous materials — Determination of nitrogen (trace amounts) in steel — spectrophotometric method
SIS SS 02 81 76-1986 Determination of total cyanide in water - Photometric or titrimetric method

PL-PKN, Spectrophotometric method for the determination of total nitrogen

PN EN 10179-1992 Chemical analysis of ferrous materials. Determination of nitrogen (trace amounts) in steels. Spectrophotometric method
PN Z04092-08-1989 Air purity protection Tests for nitric acid and nitrogen oxides Determination of nitrogen dioxide in ambient air (imision) by spectrophotometric method with passive sampling
PN-EN 17041-2018-07 P Fertilizers--Determination of boron in concentrations ≤ 10 % using spectrometry with azomethine-H
PN C04288-15-1987 Technical fats Methods ot' testing Determination of nickel Spectrophotometric method
PN Z04009-03-1990 Air purity protection Tests for nitrogen compounds Determination of ammonia in work places by spectrophotometry in visible spectra] region, indopheno] method

IN-BIS, Spectrophotometric method for the determination of total nitrogen

AT-ON, Spectrophotometric method for the determination of total nitrogen

ONORM DIN 10324-1993 Determination of the total phosphorus content of cheese and processed cheese - Spectrometric method

中华人民共和国国家卫生和计划生育委员会, Spectrophotometric method for the determination of total nitrogen

WS/T 60-1996 Urine.Determination of pentachlorophenol.Spectrophotometric method
WS/T 97-1996 Urine.Determination of creatinine.Spectrophotometric method
WS/T 55-1996 Urine.Determination of 4-aminophenol.Spectrophotometric method

未注明发布机构, Spectrophotometric method for the determination of total nitrogen

DIN EN 14211:2005 Air quality — measurement method for determining the concentration of nitrogen dioxide and nitrogen monoxide using chemiluminescence

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, Spectrophotometric method for the determination of total nitrogen

GB/T 6730.44-2017 Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthol spectrophotometric method
GB/T 34176-2017 Chemical analysis methods for determination of Fe2+ and Fe3+ in refractory products by the spectral photometric method with 1,10-phenanthroline

Professional Standard - Ocean, Spectrophotometric method for the determination of total nitrogen

HY/T 0345-2022 Determination of seawater trace nitrite—Flow analysis,diazotization and spectrophotometric detection witha long path length flow cell
HY/T 0346-2022 Determination of seawater trace nitrate—Flow analysis,cadmium reduction,diazotization and spectrophotometric detection with a long path length flow cell

Indonesia Standards, Spectrophotometric method for the determination of total nitrogen

SNI 19-7117.5-2005 Exhaust gas emissions - Stationary sources - Part 5: Test methods of nitrogen oxides by phenol dissulphonic acid (PDS) using spectrophotometers
SNI 19-7117.19-2009

European Committee for Electrotechnical Standardization（CENELEC）, Spectrophotometric method for the determination of total nitrogen

EN 62805-1:2017 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

International Electrotechnical Commission (IEC), Spectrophotometric method for the determination of total nitrogen

IEC 62805-1:2017 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

Anhui Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB34/T 2743-2016 Spectrophotometric method for determination of total flavonoids content in Huai Mi and its products

Standard Association of Australia （SAA）, Spectrophotometric method for the determination of total nitrogen

AS/NZS 1050.18:1994 Methods for the analysis of iron and steel - Determination of phosphorus - Spectrophotometric method
AS 3550.1:1988 Methods for the analysis of waters - Determination of dissolved sulphide - Spectrophotometric method
AS 1050.19:1988 Methods for the analysis of iron and steel - Determination of nickel content - Spectrophotometric method
AS 1050.17:1988 Methods for the analysis of iron and steel - Determination of copper content - Spectrophotometric method
AS/NZS 1050.31:1994 Methods for the analysis of iron and steel - Determination of niobium content - PAR spectrometric method
AS/NZS 1050.8:1994 Methods for the analysis of iron and steel - Determination of manganese content (spectrophotometric method)
AS/NZS 1050.21:1994 Methods for the analysis of iron and steel - Determination of cobalt content (spectrophotometric method)
AS/NZS 1050.24:1994 Methods for the analysis of iron and steel - Determination of aluminium content (spectrophotometric method)
AS/NZS 1050.27:1994 Methods for the analysis of iron and steel - Determination of titanium content (spectrophotometric method)
AS 2365.1.1:1990(R2014)
AS 2365.1.1:1990 Methods for the sampling and analysis of indoor air - Determination of nitrogen dioxide - Spectrophotometric method - Treated mesh/passive tube sampling procedures
AS 2723:1984 Waters - Determination of uranium (VI) - Spectrophotometric method

Professional Standard - Electricity, Spectrophotometric method for the determination of total nitrogen

DL/T 522.1-1993 Method for determining Acetone oxime in water (spectrophotometric method)
DL 430-1992 Test method of trace copper in oil (zinc reagent spectrophotometric method)

VN-TCVN, Spectrophotometric method for the determination of total nitrogen

TCVN 2825-1999 Aluminium ores.Determination of total silicon content.Combined gravimetric and spectrophotometry method

Universal Oil Products Company (UOP), Spectrophotometric method for the determination of total nitrogen

UOP 682-1984 TOTAL CYANIDE IN REFINERY WATERS BY VISIBLE SPECTROPHOTOMETRY

水利部, Spectrophotometric method for the determination of total nitrogen

SL/T 788-2019 Determination of total nitrogen, volatile phenols, sulfides, anionic surfactants and hexavalent chromium in water quality continuous flow analysis-spectrophotometry

Professional Standard - Tobacco, Spectrophotometric method for the determination of total nitrogen

YC/T 36-1996 Cigarettes-Determination of alkaloids in total partculate matter-Spectrometric method

Taiwan Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

CNS 14573-2001 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method

FI-SFS, Spectrophotometric method for the determination of total nitrogen

Canadian Standards Association (CSA), Spectrophotometric method for the determination of total nitrogen

CSA Z223.26-M87-CAN/CSA-1987 Measurement of Total Mercury in Air - Cold Vapour Atomic Absorption Spectrophotometric Method General Instruction No 1 R(1999)

Heilongjiang Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB23/T 2963-2021 Determination of Trace Calcium Content in Natural Flake Graphite by Calcium-Arsenazo Ⅲ Spectrophotometric Method

Shandong Provincial Standard of the People's Republic of China, Spectrophotometric method for the determination of total nitrogen

DB37/T 4150-2020 Determination of Water Quality β-Naphthol by Fluorescence Spectrophotometry

Professional Standard - Coal, Spectrophotometric method for the determination of total nitrogen

MT/T 361-1994 Determination of Copper in Coal Mine Water - Atomic Absorption Spectrophotometry
MT/T 364-1994 Determination method of cadmium in coal mine water - Atomic absorption spectrophotometry
MT/T 365-1994 Method for Determination of Manganese in Coal Mine Water - Atomic Absorption Spectrophotometry
MT/T 363-1994 Determination of Zinc in Coal Mine Water - Atomic Absorption Spectrophotometry
MT/T 362-1994 Determination method of lead in coal mine water-Atomic absorption spectrophotometry