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Water Quality Analysis
Water Quality Analysis, Total:200 items.
In the international standard classification, Water Quality Analysis involves: Water quality, Materials for aerospace construction, Aerospace electric equipment and systems, Power stations in general, Hydraulic energy engineering, Road engineering, Hydraulic construction, Structures of buildings, Analytical chemistry.
US-FCR, Water Quality Analysis
Professional Standard - Non-ferrous Metal, Water Quality Analysis
Korean Agency for Technology and Standards (KATS), Water Quality Analysis
- KS I ISO 13530-2008(2018) Water quality－Guide to analytical quality control for water analysis
- KS I ISO 17381:2010 Water quality－Selection and application of ready-to-use test kit methods in water analysis
- KS I ISO 17381:2022 Water quality — Selection and application of ready-to-use test kit methods in water analysis
- KS I ISO 15839-2010(2015) Water quality－On-line sensors/analysing equipment for water－Specifications and performance tests
- KS I ISO TS 20612:2019 Water quality — Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
- KS I ISO 8466:2014 Water quality ― Calibration and evaluation of analytical methods and estimation of performance characteristics
- KS I ISO 17381-2010(2015) Water quality－Selection and application of ready-to-use test kit methods in water analysis
- KS I ISO 20612:2009 Water quality－Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
- KS I ISO 13530:2008 Water quality-Guide to analytical quality control for water analysis
- KS I ISO 8466-1-2008(2013) Water quality－Calibration and evaluation of analytical methods and estimation of performance characteristics (Statistical evaluation of the linear calibration function)
Defense Logistics Agency, Water Quality Analysis
British Standards Institution (BSI), Water Quality Analysis
- DD ENV ISO 13530:1999 Water quality. Guide to analytical quality control for water analysis
- BS DD ENV ISO 13530:1999 Water quality - Guide to analytical quality control for water analysis
- BS ISO 8466-1:2021 Water quality. Calibration and evaluation of analytical methods - Linear calibration function
- PD ISO/TS 21231:2019 Water quality. Characterization of analytical methods. Guidelines for the selection of a representative matrix
- BS ISO 17381:2003 Water quality. Selection and application of ready-to-use test kit methods in water analysis
- 20/30408800 DC BS ISO 8466-1. Water quality. Calibration and evaluation of analytical methods. Part 1. Linear calibration function
BE-NBN, Water Quality Analysis
AT-ON, Water Quality Analysis
- ONORM M 6269-1986 Water analysis; determination ofturbidity
- ONORM M 6612-2001 Water analysis - Calcit saturation of water
- ONORM M 6616-1994 Water analysis - Determination of temperature
- ONORM M 6247-2001 Water analysis - Expression of results in waste waste water analysis
- ONORM M 6613-2001 Water analysis - Photometric determination of aluminium
- ONORM M 6607-1992 Water analysis — Determination of fluoride
- ONORM M 6246-1996 Water analysis - Expression of results in drinking water analysis
- ONORM M 6261-1981 Water analysis; determination of calcium; titrimetric method
- ONORM M 6259-1994 Water analysis — Preservation and handling of samples
- ONORM M 6600-1992 Water analysis - Statistical methods in water analysis - Terms and definitions
- ONORM M 6258-1992 Water analysis - Guidance on sampling technique - Sampling of waste water
- ONORM M 6238 Teil.1-1986 Water analysis; determination ofnitrate; 2,6-dimethylphenol spectrometric method
- ONORM M 6610-2000 Water analysis - Photometric determination of dissolved silicate
- ONORM M 6603-2-1997 Water analysis - Determination of potassium and sodium by flame emission spectrometry
- ONORM M 6281-1991 Water analysis — Determination of total chlorine by iodometric ütration
- ONORM M 6603-1-1997 Water analysis - Determination of potassium and sodium by atomic absorption spectrometry
- ONORM M 6275-1987 Water analysis; determination of adsorbable organic halogens (AOX)
- ONORM M 6265-1991 Water analysis; determination of the chemical oxygen dem and Qualite de l'eau; determination de la demande chimique en oxygene
- ONORM M 6609-1993 Water analysis - Determination of the inhibitory effect of waste water on the light emission of Photobacterium phosphoreum
- ONORM M 6272-1985 Water analysis; determination of the mass concentration of settleable matter in water and waste water
- ONORM M 6615-1994 Water analysis - Determination of dissolved and easily liberated sulfide
- ONORM M 6271-1985 Water analysis; determination of the settleable matter by volumein water and waste water
- ONORM M 6611-2000 Water analysis - Determination of hydrogen peroxide and its adducts
- ONORM M 6614-2001 Water analysis - Determinaiton of extractable organic bound halogens (EOX)
- ONORM M 6608-1996 Water analysis - Determination of hydrocarbons by infrared spectrometry
- ONORM M 6630-1992 Water analysis - Test for the inhibition of oxygen consumption by activated Sludge
- ONORM M 6604-1995 Water analysis - Determination of selenium by atomic absorption spectrometry (hydride technique)
- ONORM M 6237-1986 Water analysis; determination ofphosphorus Compounds; ammonium molybdate spectrophotometric method
- ONORM M 6274-1985 Water analysis; determination ofthe mass concentration offilterable matter and its residue on ignition
- ONORM M 6245-1997 Water analysis - Summary of methods - Limits of detection, fields of application, Statistical data
- ONORM M 6238 Teil.2-1986 Water analysis; determination ofnitrate; 4-fluorophenol spectrometric method after distillation
- ONORM M 6253 Teil.1-1985 Water analysis; determination ofanionic Surfactants by the methylene blue spectrometric method
- ONORM M 6236-1993 Water analysis - Determination of easily volatile halogenated hydrocarbons - Head space gas Chromatographie method
- ONORM M 6253 Teil.2-1986 Water analysis; determination ofnonionic Surfactants using Dragendorff reagent
- ONORM M 6617-1997 Water analysis - Determination of aluminium, lead, cadmium, chromium, cobalt, copper and nickel by graphite furnace atomic absorption spectrometry
- ONORM M 6279-1991 Water analysis — Determination oj 33 elements by inductively coupled plasma emission spectrometry (ICP-AES)
- ONORM M 6273-2000 Water analysis-Analysis of activated sludge-Determination of the settled share of sludge volume,the dry residue and the sludge volume index
- ONORM M 6623-1994 Water analysis - Determination of phenoxyalkyl carbonic acids by gas chromatography and mass-spectrometric detection after solid-liquid-extraction and derivatization
- ONORM M 6255-1986 Water analysis; determination of free chlorine and total chlorine; titrimetric method using N,N-diethyl-1,4-phenylene-diamine Analyse de l'eau; dosage du chlore libre et du chlore total; m?thode titrim?trique ? la N,N-diethyl-phenylene-1,4-diamine
- ONORM M 6621-1994 Water analysis — Determination of selected organi? nitrogen and phosphorus Compounds, in particular pesticides, by gas chromatography after solid-liquid-extraction
U.S. Military Regulations and Norms, Water Quality Analysis
European Committee for Standardization (CEN), Water Quality Analysis
- ENV ISO 13530:1998 Water Quality - Guide to Analytical Quality Control for Water Analysis ISO/TR 13530:1997
Group Standards of the People's Republic of China, Water Quality Analysis
Professional Standard - Railway, Water Quality Analysis
Professional Standard - Electricity, Water Quality Analysis
- DL/T 938-2005 Analytical method for effluent quality of thermal power plant
- DL/T 5194-2004 Code of water quality analysis for hydropower and water resources engineering geological investigation
- DL/T 5194-2004（条文说明） Code of water quality analysis for hydropower and water resources engineering geological investigation(explanation)
- DL/T 5152-2001 Test code of water analysis for hydraulic concrete
- DL/T 5152-2001（条文说明） Test code of water analysis for hydraulic concrete(explanation)
- DL/T 5152-2017 Water quality analysis test rules for hydraulic concrete
- DL/T 913-2005 Quality inspection guide for water quality analyzers in thermal power plant
- DL/T 913-2020 Guidelines for quality acceptance of water quality analysis instruments in power plants
- DL/T 1029-2006 Laboratory quality management guide for water quality analyzers in thermal power plant
Professional Standard - Energy, Water Quality Analysis
- NB/T 35052-2015 Specification of water quality analysis for hydropower engineering geological investigation
水利部, Water Quality Analysis
- SL 396-2011 Water quality analysis procedures for water conservancy and hydropower projects
Indonesia Standards, Water Quality Analysis
工业和信息化部, Water Quality Analysis
Professional Standard - Coal, Water Quality Analysis
- MT/T 894-2000 General rules for analytical and testing methods for coal mine water
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, Water Quality Analysis
- GB/T 33686-2017 General rules for analytical and testing methods of coal mine water
American Society for Testing and Materials (ASTM), Water Quality Analysis
- ASTM D4195-88(2003) Standard Guide for Water Analysis for Reverse Osmosis Application
- ASTM D5172-91(2004) Standard Guide for Documenting the Standard Operating Procedures Used for the Analysis of Water
- ASTM D5091-95(2001) Standard Guide for Water Analysis for Electrodialysis/Electrodialysis Reversal Applications
- ASTM D5091-95(2007) Standard Guide for Water Analysis for Electrodialysis/Electrodialysis Reversal Applications
- ASTM D5091-95(2014) Standard Guide for Water Analysis for Electrodialysis/Electrodialysis Reversal Applications
- ASTM D4195-08 Standard Guide for Water Analysis for Reverse Osmosis and Nanofiltration Application
- ASTM D4195-08(2014) Standard Guide for Water Analysis for Reverse Osmosis and Nanofiltration Application
Professional Standard - Traffic, Water Quality Analysis
- JTJ 056-1984 Operating rules for water-quality analysis of highway engineering
International Organization for Standardization (ISO), Water Quality Analysis
- ISO 17381:2003 Water quality - Selection and application of ready-to-use test kit methods in water analysis
- ISO/TS 21231:2019 Water quality — Characterization of analytical methods — Guidelines for the selection of a representative matrix
- ISO/PRF TS 7013 Water quality — Guidance and requirements for designing an interlaboratory trial for validation of analytical methods
- ISO 8466-1:2021 Water quality — Calibration and evaluation of analytical methods — Part 1: Linear calibration function
- ISO/TS 20612:2007 Water quality - Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
- ISO/TS 13530:2009 Water quality - Guidance on analytical quality control for chemical and physicochemical water analysis
KR-KS, Water Quality Analysis
- KS I ISO 17381-2022 Water quality — Selection and application of ready-to-use test kit methods in water analysis
- KS I ISO 17294-2014 Water quality — Application of inductively coupled plasma mass spectrometry(ICP-MS)
- KS I ISO TS 20612-2019 Water quality — Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
ZA-SANS, Water Quality Analysis
- SANS 17381:2008 Water quality - Selection and application of ready-to-use test kit methods in water analysis
Danish Standards Foundation, Water Quality Analysis
- DS/INF 26:1990 Survey of Danish standards on methods for water analysis
Professional Standard - Chemical Industry, Water Quality Analysis
- HG/T 3609-2000 Principle for water quality analytical methods of industrial circulating cooling water
SE-SIS, Water Quality Analysis
Professional Standard - Geology, Water Quality Analysis
- DZ/T 0064.1-2021 Analytical methods for groundwater quality - Part 1: General requirements
- DZ/T 0064.2-2021 Analytical methods for groundwater quality - Part 2: Collection and storage of water samples
- DZ/T 0064.7-2021 Analytical methods of groundwater quality - Part 7: Potentiometric method for determination of EH value
- DZ/T 0064.43-2021 Analytical methods for groundwater quality - Part 43: Determination of acidity by titration
- DZ/T 0064.79-2021 Groundwater Quality Analysis Methods Part 79: Determination of Tritium Radiochemical Method
- DZ/T 0064.65-2021 Methods of Analysis of Groundwater Quality Part 65: Determination of Sulfate by Turbidimetric Method
- DZ/T 0064.6-2021 Analytical methods for groundwater quality - Part 6: Electrode method for the determination of electrical conductivity
- DZ/T 0064.66-2021 Analytical methods of groundwater quality - Part 66: Determination of sulfides by iodometric method
- DZ/T 0064.8-2021 Analytical methods for groundwater quality - Part 8: Gravimetric method for the determination of suspended solids
- DZ/T 0064.37-2021 Analytical methods of groundwater quality - Part 37: Determination of selenium content by catalytic polarography
- DZ/T 0064.5-2021 Analytical methods of groundwater quality - Part 5: Determination of pH value by the glass electrode method
- DZ/T 0064.33-2021 Analytical methods for groundwater quality - Part 33: Determination of molybdenum content by catalytic polarography
- DZ/T 0064.50-2021 Analytical methods of groundwater quality - Part 50: Determination of chloride by argentometric titration
- DZ/T 0064.60-2021 Analytical methods of groundwater quality - Part 60: Determination of nitrite spectrophotometric method
- DZ/T 0064.45-2021 Analytical methods of groundwater quality - Part 45: Determination of boron content by mannitol base titration
- DZ/T 0064.75-2021 Analytical methods of groundwater quality - Part 75: Determination of radium and radon radioactivity by the emanation method
- DZ/T 0064.29-2021 Methods of analysis of groundwater quality - Part 29: Determination of lithium content by flame emission spectrometry
- DZ/T 0064.39-2021 Analytical methods of groundwater quality - Part 39: Determination of strontium content by flame emission spectrometry
- DZ/T 0064.3-2021 Groundwater Quality Analysis Methods Part 3: Determination of Temperature Thermometer (Pyrometer) Method
- DZ/T 0064.81-2021 Methods of Analytical Groundwater Quality Part 81: Determination of Mercury Amounts by Atomic Fluorescence Spectrometry
- DZ/T 0064.47-2021 Analytical methods for groundwater quality - Part 47: Titrimetric method for the determination of free carbon dioxide
- DZ/T 0064.4-2021 Analytical methods of groundwater quality - Part 4: Determination of chromaticity Platinum-cobalt standard colorimetric method
- DZ/T 0064.62-2021 Methods of analysis of groundwater quality - Part 62: Determination of silicic acid by silicon molybdenum yellow spectrophotometric method
- DZ/T 0064.63-2021 Methods of analysis of groundwater quality - Part 63: Determination of silicic acid by silicon molybdenum blue spectrophotometric method
- DZ/T 0064.56-2021 Methods of Analytical Groundwater Quality Part 56: Determination of Iodide Starch Spectrophotometry
- DZ/T 0064.59-2021 Methods of Analytical Groundwater Quality Part 59: Determination of Nitrate by Ultraviolet Spectrophotometry
- DZ/T 0064.54-2021 Analytical methods of groundwater quality - Part 54: Determination of fluoride by ion selective electrode method
- DZ/T 0064.70-2021 Methods of Analytical Groundwater Quality Part 70: Determination of Oxygen Consumption by Potassium Dichromate Titration
- DZ/T 0064.48-2021 Analytical methods of groundwater quality - Part 48: Titration method for the determination of aggressive carbon dioxide
- DZ/T 0064.9-2021 Methods of Analysis of Groundwater Quality Part 9: Gravimetric Method for Determination of Total Dissolved Solids
- DZ/T 0064.24-2021 Methods for analysis of groundwater quality - Part 24: Determination of iron content by thiocyanate spectrophotometric method
- DZ/T 0064.23-2021 Analytical methods for groundwater quality - Part 23: Determination of iron content by phenanthroline spectrophotometric method
- DZ/T 0064.46-2021 Methods of Analytical Groundwater Quality Part 46: Determination of Bromide Spectrophotometric Method with Bromophenol Red
- DZ/T 0064.31-2021 Methods of analysis of groundwater quality - Part 31: Determination of manganese content Ammonium persulfate spectrophotometric method
- DZ/T 0064.57-2021 Analytical Methods of Groundwater Quality Part 57: Determination of Ammonia Nitrogen by Nessler's Reagent Spectrophotometry
- DZ/T 0064.88-2021 Methods of Analytical Groundwater Quality Part 88: Determination of 14C Synthetic Benzene - Liquid Scintillation Counting Method
- DZ/T 0064.28-2021 Methods of analysis of groundwater quality - Part 28: Determination of potassium, sodium, lithium and ammonium by ion chromatography
- DZ/T 0064.27-2021 Methods of analysis of groundwater quality - Part 27: Determination of potassium and sodium by flame emission spectrometry
- DZ/T 0064.69-2021 Methods of Analysis of Groundwater Quality Part 69: Determination of Oxygen Consumption Alkaline Potassium Permanganate Titration
- DZ/T 0064.36-2021 Analytical methods of groundwater quality - Part 36: Determination of rubidium and cesium by flame emission spectrometry
- DZ/T 0064.77-2021 Groundwater Quality Analysis Methods Part 77: Determination of 18O CO2-H2O Equilibrium—Gas Isotope Mass Spectrometry
- DZ/T 0064.26-2021 Methods of analysis of groundwater quality - Part 26: Determination of mercury content by cold atomic absorption spectrophotometry
- DZ/T 0064.55-2021 Methods of Analytical Groundwater Quality Part 55: Determination of Iodide by Catalytic Reduction Spectrophotometry
- DZ/T 0064.44-2021 Analytical methods of groundwater quality - Part 44: Determination of boron content H acid-formimine spectrophotometric method
- DZ/T 0064.61-2021 Methods of Analytical Groundwater Quality Part 61: Determination of Phosphate Phosphorous Bismuth Molybdenum Blue Spectrophotometric Method
- DZ/T 0064.58-2021 Methods of Analytical Groundwater Quality Part 58: Determination of Nitrate Disulfonic Acid Phenol Spectrophotometric Method
- DZ/T 0064.86-2021 Methods of Analysis of Groundwater Quality Part 86: Determination of Cyanide Flow Injection On-line Distillation Method
- DZ/T 0064.18-2021 Analytical methods of groundwater quality - Part 18: Determination of total chromium and hexavalent chromium by catalytic polarography
- DZ/T 0064.68-2021 Methods of Analytical Groundwater Quality Part 68: Determination of Oxygen Consumption by Acidic Potassium Permanganate Titration
- DZ/T 0064.78-2021 Methods of analysis of groundwater quality - Part 78: Determination of deuterium Metal zinc reduction - gas isotope mass spectrometry
- DZ/T 0064.84-2021 Analytical methods of groundwater quality - Part 84: Determination of strontium content by flame atomic absorption spectrophotometry
- DZ/T 0064.25-2021 Analytical methods for groundwater quality - Part 25: Determination of iron content by flame atomic absorption spectrophotometry
- DZ/T 0064.32-2021 Methods of analysis of groundwater quality - Part 32: Determination of manganese content by flame atomic absorption spectrophotometry
- DZ/T 0064.53-2021 Analytical methods of groundwater quality - Part 53: Determination of fluoride Alizarin complex spectrophotometric method
- DZ/T 0064.82-2021 Methods of Analytical Analysis of Groundwater Quality Part 82: Determination of Sodium by Flame Atomic Absorption Spectrophotometry
- DZ/T 0064.30-2021 Analytical methods for groundwater quality - Part 30: Determination of lithium content by flame atomic absorption spectrophotometry
- DZ/T 0064.14-2021 Methods for analysis of groundwater quality - Part 14: Determination of magnesium content by ethylenediaminetetraacetic acid disodium titration
- DZ/T 0064.13-2021 Methods for analysis of groundwater quality - Part 13: Determination of calcium content by ethylenediaminetetraacetic acid disodium titration method
- DZ/T 0064.85-2021 Methods of Analysis of Groundwater Quality Part 85: Determination of Volatile Phenols by Flow Injection On-line Distillation
- DZ/T 0064.76-2021 Methods of Analytical Groundwater Quality Part 76: Determination of Gross Alpha and Gross Beta Radioactivity Radiochemical Method
- DZ/T 0064.90-2021 Groundwater Quality Analysis Methods Part 90: Determination of 18O Online CO2-H2O Equilibrium—Gas Isotope Mass Spectrometry
- DZ/T 0064.87-2021 Groundwater Quality Analysis Methods Part 87: Determination of 13C Online Phosphoric Acid Hydrolysis-Gas Isotope Mass Spectrometry
- DZ/T 0064.52-2021 Methods of Analytical Groundwater Quality Part 52: Determination of Cyanide Pyridine-Pyrazolone Spectrophotometric Method
- DZ/T 0064.11-2021 Analytical methods for groundwater quality - Part 11: Determination of arsenic content by hydride generation - atomic fluorescence spectrometry
- DZ/T 0064.38-2021 Analytical methods for groundwater quality - Part 38: Determination of the amount of selenium by hydride generation - atomic fluorescence spectrometry
- DZ/T 0064.15-2021 Methods of analysis of groundwater quality - Part 15: Determination of total hardness by ethylenediaminetetraacetic acid disodium titration
- DZ/T 0064.89-2021 Groundwater Quality Analysis Methods Part 89: Determination of Deuterium On-line High Temperature Thermal Transfer-Gas Isotope Mass Spectrometry
- DZ/T 0064.12-2021 Methods for analysis of groundwater quality - Part 12: Determination of calcium and magnesium content by flame atomic absorption spectrophotometry
- DZ/T 0064.64-2021 Methods of analysis of groundwater quality - Part 64: Determination of sulfate disodium edetate - barium titration
- DZ/T 0064.67-2021 Methods of analysis of groundwater quality - Part 67: Determination of sulfides by p-aminodimethylaniline spectrophotometric method
- DZ/T 0064.73-2021 Methods of Analysis of Groundwater Quality - Part 73: Determination of Volatile Phenols 4-Aminoantipyridine Spectrophotometric Method
- DZ/T 0064.49-2021 Analytical methods for groundwater quality - Part 49: Determination of carbonate, bicarbonate and hydroxide ions by titration
- DZ/T 0064.83-2021 Methods of analysis of groundwater quality - Part 83: Determination of copper, zinc, cadmium, nickel and cobalt by flame atomic absorption spectrophotometry
- DZ/T 0064.17-2021 Analytical methods of groundwater quality - Part 17: Determination of total chromium and hexavalent chromium by diphenylcarbazide spectrophotometric method
- DZ/T 0064.10-2021 Analytical methods for groundwater quality - Part 10: Determination of arsenic content by silver diethyldithiocarbamate spectrophotometric method
- DZ/T 0064.80-2021 Groundwater Quality Analysis Methods Part 80: Determination of Lithium, Rubidium, Cesium and Other 40 Elements by Inductively Coupled Plasma Mass Spectrometry
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Water Quality Analysis
- GB/T 5750.3-2006 Standard examination methods for drinking water.Water analysis quality control
- GB/T 5750.3-2023 Standard Examination Methods for Drinking Water Part 3: Water Analysis Quality Control
Association Francaise de Normalisation, Water Quality Analysis
- NF T90-260:2023 Qualité de l'eau - Caractérisation des méthodes d'analyses - Mesure du potentiel d'oxydoréduction dans l'eau
- NF EN ISO 15839:2006 Qualité de l'eau - Matériel d'analyse/capteurs directs pour l'eau - Spécifications et essais de performance
- FD T90-230:2015 Water quality - Characterization of analytical methods - Guide for selection of a matrix representative of a scope of application
- FD T90-240:2022 Qualité de l'eau - Caractérisation des méthodes d'analyses - Lignes directrices pour la conduite et la validation d'études de stabilité des paramètres physico-chimiques dans le domaine de l'eau
CN-STDBOOK, Water Quality Analysis
- 图书 3-9002 Water treatment agent and industrial water quality analysis standard compilation method volume (2010~2018)
- 图书 3-8991 Compilation of Water Treatment Agents and Industrial Water Quality Analysis Standards (2010~2018) Product Volume
NO-SN, Water Quality Analysis
- NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
Military Standard of the People's Republic of China-General Armament Department, Water Quality Analysis
- GJB 844.15-1993 Water quality analysis method according to safety regulations for submarine nuclear power plant operation
AENOR, Water Quality Analysis
- UNE-ISO 17381:2012 Water quality -- Selection and application of ready-to-use test kit methods in water analysis
Jilin Provincial Standard of the People's Republic of China, Water Quality Analysis
API - American Petroleum Institute, Water Quality Analysis
- API RP 550 P2 S9-1984 Manual on Installation of Refinery Instruments and Control Systems - Part 11-Process Stream Analyzers - Section 9-Water Quality Analyzers (FOURTH EDITION)
ES-AENOR, Water Quality Analysis
- UNE 77-075-1991 Water quality. Evaluation of membrane filters used for microbiological analyses