GB/T 223.37-2020
Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation

Standard No.
GB/T 223.37-2020
Language
Chinese
Release Date
2020
Published By
国家市场监督管理总局、中国国家标准化管理委员会
Lastest
GB/T 223.37-2020
Replace
GB/T 223.37-1989
Scope
This part of GB/T223 specifies the method for the determination of nitrogen content in steel and alloys by distillation and separation of indophenol blue spectrophotometry. This section applies to the determination of nitrogen content in the range of 0.0006% to 0.050% by mass fraction in low alloy steel and 0.010% to 0.050% in mass fraction in high alloy steel. This section does not apply to the determination of nitrogen content in steel and alloys containing silicon nitride or silicon content exceeding 0.6%.

GB/T 223.37-2020 Referenced Document

  • ISO 1042 Laboratory glassware - One-mark volumetric flasks
  • ISO 14284 Steel and iron — Sampling and preparation of samples for the determination of chemical composition*， 2022-10-25 Update
  • ISO 3696 Water for analytical laboratory use; Specification and test methods
  • ISO 648 Laboratory glassware - Single-volume pipettes

GB/T 223.37-2020 history

  • 2020 GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
  • 1989 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
  • 1985 GB 223.37-1985 Methods for chemical analysis of iron, steel and alloys Distillation separation-volumetric determination of nitrogen content

GB/T 223.37-2020 -All Parts

GB/T 223.1-1981 Determination of carbon content in iron,steel and alloy GB/T 223.10-2000 Methods for chemical analysis of iron,steel and alloy The cupferron separation-chrome azurol S photometric method for the determination of aluminium content GB/T 223.11-2008 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration GB/T 223.12-1991 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content GB/T 223.13-2000 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content GB/T 223.14-2000 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content GB/T 223.15-1982 Chemical analysis of iron,steel and alloy--The determination of titanium by gravimetric method GB/T 223.16-1991 Methods for chemical analysis of iron,steel and alloy--The chromotropic acid photometric method for the determination of titanium content GB/T 223.17-1989 Methods for chemical analysis of iron,steel and alloy--The diantipyrylmethane photometric method for the determination of titanium content GB/T 223.18-1994 Methods for chemical analysis of iron steel and alloy.The sodium thiosulfate separation iodimetric method for the determination of cupper content GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.2-1981 Determination of sulfur content in steel and alloy GB/T 223.20-1994 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content GB/T 223.21-1994 Methods for chemical analysis of iron steel and alloy.The 5-CL-PADAB spectrophotometric method for the determination of cobalt content GB/T 223.22-1994 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content GB/T 223.23-2008 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method GB/T 223.24-1994 Methods for chemical analysis of iron, steel and alloy.The extraction seperation--The dimethylglyoxime spectrophotometric method for the determination of nickel content GB/T 223.25-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime gravimetric method for the determination of nickel content GB/T 223.26-2008 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method GB/T 223.27-1994 Methods for chemical analysis of iron, steel and alloy.The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content GB/T 223.28-1989 Methods for chemical analysis of iron,steel and alloy--The α-benzoinoxime gravimetric method for the determination of molybdenum content GB/T 223.29-2008 Iron,steel and alloy.Determination of lead content.Carrier precipitation-xylenol orange spectrophotometric method GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.30-1994 Methods for chemical analysis of iron,steel and alloy. The arsenazo Ⅲ spectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid GB/T 223.31-2008 Iron,steel and alloy.Determination of arsenic content.Distillation-molybdenum blue spectrophotometric method GB/T 223.32-1994 Methods for chemical analysis of iron,steel and alloy. The hypophosphite reduction-iodimetric method for the determination of arsenic content GB/T 223.33-1994 Methods for chemical analysis of iron,steel and alloy. The chlorophosphonazo mA photometric method for the determination of cerium content after extraction separation GB/T 223.34-2000 Methods for chemical analysis of iron,steel and alloy-The determination of hydrochloric acid-insoluble content of iron powders GB/T 223.35-1985 Methods for chemical analysis of iron,steel and alloy--The pulse heating inert gas fusion-coulometric titration method for the determination of oxygen content GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy. The neutral titration method for the determinaion of nitrogen content after distillation separation GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation GB/T 223.38-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content GB/T 223.39-1994 Methods for chemical analysis iron,steel and alloy. The sulphochlorophenol S photometric method for the determination of niobium content GB/T 223.4-2008 Alloyed steel.Determination of manganese content.Potentiometric or visual titration method GB/T 223.40-2007 Iron, steel and alloy Determination of niobium content by the sulphochlorophenol S spectrophotometric method GB/T 223.41-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content GB/T 223.42-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalum content GB/T 223.43-2008 Iron,steel and alloy.Determination of tungsten content.Gravimetric method and spectrophotometric method GB/T 223.45-1994 Methods for chemical analysis of iron,steel and alloy. The cupral Separation-xylidyl blue Ⅱphotometric method for the determination of magnesium content GB/T 223.46-1989 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrometric method for the determination of magnesium content GB/T 223.47-1994 Methods for chemical analysis of iron,steel and alloy. The carrier precipitation-molybdenum blue potometric method for the determination of antimony content GB/T 223.48-1985 Methods for chemical analysis of iron,steel and alloy--The semixylenol orange photometric method for the determination of bismuth content 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 223.5-2008 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method GB/T 223.50-1994 Methods for chemical analysis of iron, steel and alloy. The phenylfluorone-CTMAB direct photometric method for the determination of tin content GB/T 223.51-1987 Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content GB/T 223.52-1987 Methods for chemical analysis of iron,steel and alloy--The hydroxylamine hydrochloride-iodometric method for the determination of selenium content GB/T 223.53-1987 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content GB/T 223.54-2022 Iron, steel and alloy—Determination of nickel content—Flame atomic absorption spectrometric method GB/T 223.55-2008 Iron, steel and alloy. Determination of tellurium content. Oscillo-polarographic method GB/T 223.56-1987 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content GB/T 223.57-1987 Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content GB/T 223.58-1987 Methods for chemical analysis of iron,steel and alloy--The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content GB/T 223.59-2008 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method GB/T 223.6-1994 Methods for chemical analysis of iron,steel and alloy. The neutralization titrimetric method for the determination of boron content GB/T 223.60-1997 Methods for chemical analysis of iron, steel and alloy--The perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.61-1988 Methods for chemical analysis of iron, steel and alloy--The ammonium phosphomolybdate volumetric method for the determination of phosphorus content GB/T 223.62-1988 Methods for chemical analysis of iron, steel and alloy--The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.63-2022 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method GB/T 223.64-2008 Iron,steel and alloy.Determination of manganese content.Flame atomic absorption spectrometric method GB/T 223.65-2012 Steel, iron and alloy.Determination of cobalt content.Flame atomic absorption spectrometric method GB/T 223.66-1989 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-chlorpromazine hydrochloride-chloroform extraction photometric method for the determination of tungsten content GB/T 223.67-2008 Iron,steel and alloy.Determination of sulfur content.Methylene blue spectrophotometric method GB/T 223.68-1997 Methods for chemical analysis of iron, steel and alloy. The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content GB/T 223.69-2008 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace GB/T 223.7-2002 Iron powder--Determination of iron content--Potassium dichromate titration method GB/T 223.70-2008 Iron,steel and alloy.Determination of iron contents. o-Phenanthroline spectrophotometric method GB/T 223.71-1997 Methods for chemical analysis of iron, steel and alloy. The gravimetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.72-2008 Iron,steel and alloy.Determination of sulfur content.Gravimetric method GB/T 223.73-2008 Iron,steel and alloy.Determination of iron contents. Titanium trichloride-potassium dichromate titration method GB/T 223.74-1997 Methods for chemical analysis of iron, steel and alloy. The combustion gravimetric/gas-volumetric method for the determination of combined carbon content GB/T 223.75-2008 Iron,steel and alloy.Determination of boron content. Methanol distillation-curcumin photometric method GB/T 223.76-1994 Methods for chemical analysis iron,steel and alloy.The flame atomic absorption spertrometric method for the determination of vanadium content GB/T 223.77-1994 Methods for chemical analysis iron,steel and alloy.The flame atomic absorption spertrometric method for the determination of calcium content GB/T 223.78-2000 Methods for chemical analysis of iron,steel and alloy-Curcumin spectrophotometric method for the determination of boron content GB/T 223.79-2007 Iron and steel-Determination of multi-element contents-X-ray fluorescence spectrometry (Routine method) GB/T 223.8-2000 Methods for chemical analysis of iron,steel and alloy The sodium fluoride separation-EDTA titration method for the determination of aluminium content GB/T 223.80-2007 Iron,steel and alloy-Determination of trace bismuth and arsenic contents- Hydride generation-atomic fluorescence spectrometric method GB/T 223.81-2007 Iron,steel and alloy-Determination of total aluminum and total aluminum and total boron contents-Microwave digestion-inductively coupled plasma mass spectrometric method GB/T 223.82-2018 Steel and iron.Determination of hydrogen content.Thermal conductivity/infrared method after fusion under inert gas GB/T 223.83-2009 Steel and iron.Determination of high sulfur content.Infrared absorption method after combustion in an induction furnace GB/T 223.84-2009 Steel and iron.Determination of titanium content.Diantipyrylmethane spectrophotometric method GB/T 223.85-2009 Steel and iron.Determination of sulfur content.Infrared absorption method after combustion in an induction furnace GB/T 223.86-2009 Steel and iron.Determination of total carbon content.Infrared absorption method after combustion in an induction furnace GB/T 223.87-2018 Iron, steel and alloy.Determination of calcium and magnesium.Inductively coupled plasma mass spectrometric method GB/T 223.88-2019 Iron, steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method GB/T 223.89-2019 Iron, steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method GB/T 223.9-2008 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method GB/T 223.90-2021 Iron, steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method GB/T 223.91-2021 Iron, steel and alloy—Determination of copper—2,2’-Biquinoline spectrophotometric method


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