Determination of Potassium Content in Water by Spectrophotometry

Determination of Potassium Content in Water by Spectrophotometry, Total:283 items.

The international standard classification for "Determination of Potassium Content in Water by Spectrophotometry" includes: Organic acids , Organic nitrogen compounds , Aromatic hydrocarbons , Non-metalliferous minerals , Iron ores , Ferrous metals in general , Paints and varnishes , Oxides , Chemical analysis , Aluminium and aluminium alloys , Natural gas , Animal feeding stuffs , Manganese ores , Alcohols. Ethers , Sugar and sugar products , Organic chemicals , Spices and condiments , Farming and forestry in general , Ferroalloys , Water of natural resources , Water quality , Fruits and derived products , Pharmaceutics , Fruits. Vegetables , General methods of tests and analysis for food products , Equipment for storage, preparation and distribution of fertilizers , Chemical analysis of metals , Materials for aerospace construction , Starch and derived products .

The Chinese standard classification for "Determination of Potassium Content in Water by Spectrophotometry" includes: Petroleum products in general , Fuel oil , Organic chemicals in general , Basic organic chemicals , Basic standards and general methods for water treatment agent , Chemical raw material ore , Iron ore , Steel and iron alloy analysis method , Basic standard and general method for coating , Rare metals and their alloys analysis method , Boiler and its auxiliary equipment , Light metals and their alloys , Petroleum and natural gas in general , Livestock and poultry feed and additive , Manganese ore , Sugar refining , General organic chemicals , Grease and oil processing and products , Animal husbandry in general , Light metals and their alloys analysis method , Environmental pollutant monitoring methods , Analysis methods for toxic substances in water , Agriculture and forestry technology , Melon, fruit and vegetable planting and product , Basic standards and general methods on chemical fertilizers , Fertilizer and soil conditioner , Chemical fertilizer and chemical soil conditioner , Semimetal and semiconductor material analysis method , Insulating oil , Electric power testing technique , Grain processing and products , Metallurgical auxiliary material ore .

Professional Standard - Petrochemical Industry

SH/T 1498.6-1997 Nylon 66 salt - Determination of content of nitrates - -Spectrophotometric method
SH/T 1747-2004 Cumene (Isopropyl benzene) for industrial use - Determination of phenol content - Spectrophotometric method
SH/T 0181-2005 Standard test method for naphthalene hydrocarbons in jet fuels by ultraviolet spectrophotometry
SH/T 0559-1993 Determination method of alkyl nitrate content in diesel oil (spectrophotometric method)
SH/T 0629-1996 Determination method for arsenic content in naphtha (potassium borohydride-silver nitrate spectrophotometric method)
SH/T 0182-1992 Determination of copper content in light petroleum (spectrophotometric method)
SH/T 0705-2001 Standard test method for determination of vanadium in heavy oils by spectrophotometry
SH/T 0020-1990 Determination of phosphorus content in gasoline (Spectrophotometric method)
SH/T 0409-1992 Determination of aromatic hydrocarbons in liquid paraffin (UV spectrophotometric method)
SH/T 0181-1992 Method for Determination of Naphthalene Hydrocarbon Content in Jet Fuel (Ultraviolet Spectrophotometry)
SH/T 1499.7-1997 Pure Adipic Acid - Determination of Content of Nitric Acid - Spectrophotometric Method

Professional Standard - Commodity Inspection

SN/T 3793-2014 Determination of total phosphorus and potassium content in compound fertilizer - X-ray fluorescence spectrometry
SN/T 3799-2014 Determination of potassium and sodium in coke ash - Atomic absorption spectrometry
SN/T 3809-2014 Determination of potassium content in potassium chloride and potassium sulphate - Atomic fluorescence spectrometry for X-ray

Professional Standard - Petroleum

SY/T 0530-2011 Determination of Oil Content in Oilfield Produced Water. Spectrophotometry Method
SY/T 0530-1993 Spectrophotometric method for the determination of oil content in oilfield sewage
SY 0530-2011 Spectrophotometric method for determination of oil content in oilfield produced water

Professional Standard - Chemical Industry

HG/T 2957.7-1984(1997) Alunite ores-Determination of potassium and sodium contents-Potassium tetraphenylborate gravimetric method and flame emission spectrophotometric methods
HG/T 2958.5-1988 Celestite ores-Determination of silicon content-Molybdenum blum spectrophotometric method
HG/T 4552.2-2013 Method for the Measurement in Tin-content in Spent Tin-stripping Solution - Part 2: Atomic Absorption Spectrophotometry Method
HG/T 2958.7-1988 Celestite ores-Determination of iron content-Sulphosalicylic acid spectrophotometric method
HG/T 3540-1990 Determination of phosphor in industrial circulating cooling water Ammonium molybdate spectrophotometric method
HG/T 2957.7-2004 Alunite ores potassium and sodium content. The Potassium Tetraphenylborate gravimetric and flame emission spectrophotometry
HG/T 4327-2012 Reclaimed water—Determination of total iron content—Spectrophotometric method
HG/T 3539-2003 Industrial circulating cooling water - Determination of iron - Spectrometric method using 1, 10 - Phenant
HG/T 3539-2012 Industrial Circulating Cooling Water - Determination of Iron Content -Spectrometric Method Using 1,10-Phenathroline

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 4324.18-1984 Methods for chemical analysis of tungsten - The atomic absorption spectrophotometric method for the determination of potassium content
GB/T 13646-1992 - Determination of bound styrene content - Spectrophotometric method
GB 4581.7-1984 Alunite ores--Determination of potassium and sodium contents--Potassium tetraphenylborate gravimetric method and flame emission spectrophotometric methods
GB/T 7717.14-1994 Acrylonitrile for industrial use-Determination of content of copper-Spectrophotometeric method
GB/T 14571.3-2008 glycol for industrial use - Determination of content of total aldehydes present - Spectrophotometric method
GB/T 8704.9-2009 Ferrovanadium—Determination of manganese content—The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method
GB/T 2590.10-1981 Hafnium oxides;Determination of manganese oxide content;Potassium periodate photometric method
GB/T 18633-2018 Determination of potassium in feeds—Flame photometry
GB/T 6730.12-2016(英文版) Iron ores—Determination of aluminumcontent—Chrome azurol S spectrophotometric method
GB/T 223.63-2022 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method
GB/T 16633-1996 Industrial circulating cooling water--Determination of silica--Spectrophotometric method
GB/T 11900-1989 Water quality--Determination of trace amounts of arsenic--Spectrophotometric method with silver salt
GB/T 23993-2009 Determination of formaldehyde content of waterborne coatings—Spectrophtometric method with acetylacetone
GB/T 20574-2006 Method for determination of total flavonoids in propolis - Colorimetric method
GB/T 11906-1989 Water quality--Determination of manganese--Potassium periodate spectrophotometric method
GB/T 7717.8-1994 Acrylonitrile - Determination of total aldehydes
GB/T 8296-1987 Natural rubber latex--Determination of manganese content--Potassium periodate photometric method
GB/T 13580.12-1992 Determination of sodium and potassium in the wet precipitation.Atomic absorption spectrophotometry
GB/T 20931.9-2007 Methods for chemical analysis of lithium—Determination of nitrogen content—Mercuric potassium iodide spectrophotometric method
GB/T 14640-1993 Industrial circulating cooling water--Determination of potassium--Atomic absorption spectrometry
GB/T 18932.6-2002 Method for the determination of glycerol contents in honey--UV spectrophotometric method
GB/T 20975.23-2008 Methods for chemical analysis of aluminium and aluminium alloys - Part 23：Determination of antimony content Potassium iodide spectrophotometric method
GB/T 22662.4-2008 Chemical analysis methods of potassium fluotitanate - Part 4: Determination of silica content - By molybdenum blue photometric method
GB/T 1508-2002 Manganese ores - Determination of total iron content - Potassium dichromate titrimetric method and 1,10 - Phenanthroline spectrophotometric method
GB/T 16781.2-1997 Natural gas-Determination of mercury--Cold atomic fluorescent spectrophotometry
GB 9018.5-1988 Celestite ores--Determination of silicon content--Molybdenum blum spectrophotometric method
GB/T 6730.21-2016 Iron ores―Determination of manganse content―Potassium periodate spectrophotometric method
GB/T 18633-2002 Determination of potassium in feed--Flame photometric method
GB/T 7717.11-1994 Acrylonitrile for industrial use-Determination of content of iron-Spectrophotometric method
GB/T 4325.18-1984 Methods for chemical analysis of molybdenum;The atomic absorption spectrophotometric method for the determination of potassium content
GB/T 7469-1987 Water quality--Determination of total mercury--Potassium permanganate-potassium persulfate decomposed method--Dithizone spectrophotometric method
GB/T 11904-1989 Water quality--Determinatoin of potassium and sodium--Flame atomic absorption spectrophotometry
GB 9018.7-1988 Celestite ores--Determination of iron content--Sulphosalicylic acid spectrophotometric method
GB/T 14571.3-1993 Ethylene glycol for industrial use. Determination of content of total aldehydes present. Spectrophotometric method
GB/T 22661.6-2008 Chemical analysis methods of potassium fluoborade - Part 6: Determination of silica content - Molybdenum blue photometric method
GB/T 17528-1998 Determination of piperine content--Spectrophotometric method

工业和信息化部

YB/T 4709-2018 Steel slag. The determination of manganese oxide content. The potassium periodate(sodium) spectrophotometric method
YB/T 4726.12-2021 Ferric-containing dust and sludge-Determination of manganese oxide content-The potassium periodate (sodium) spectrophotometric method

中华人民共和国环境保护部

GB 7469-1987 Water quality-Determination of total mercury-potassium permanganats-potassium persalfate decomposed method-Dithizonc spectrophotometric method
GB 13580.12-1992 Determination of sodium and potassium in the wet precipitation - Atomic absorption spectrophotometry
GB 11904-1989 Water quality-Determinatoin of potassium and sodium-Flame atomic absorption spectrophotometry
GB 11900-1989 Water quality-Determination of trace amounts of arsenic-Borohydride potassium-nitrale silver spectrophotometric method
GB 11906-1989 Water quality-Determination of manganese-Potassium periodate spectrophotometric method

Professional Standard - Agriculture

NY/T 2332-2013 Determination of total sugars in red ginseng—Spectrophotometry
NY/T 2016-2011 Determination of pectin content in fruit and derived product-Spectrophotometry method
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method
NY/T 2335-2013 Determination of pentosans in cereal—Spectro-photometric method
GB/T 2443-1991 Urea--Determination of biuret content--Spectrophotometric method
NY/T 1738-2009 Determination of phosphorus content in crops and derived products-spectrophotometry
NY/T 1600-2008 Determination of tannin content in fruit, vegetable and derived product - Spectrophotometry method
NY/T 1376-2007 Determination of Biuret Content for Compound Fertilizers - Spectrophotometric Method
NY/T 2420-2013 Determination of total potassium in plant - Flame photomery method

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 1382-2010 Spectrophotometric method for determination of urea content in feed

Professional Standard - Non-ferrous Metal

YS/T 807.8-2012 Chemical Analysis Methods of Aluminium Hardeners - Part 8: Determination of Antimony Content - Potassium Iodide Spectrophotometric Method
YS/T 226.1-1994 Determination of bismuth content in selenium (potassium iodide, thiourea, strychnine absorptiometry)
YS/T 807.9-2012 Chemical Analysis Methods of Aluminum Hardeners - Part 9: Determination of Bismuth Content - The Potassium Iodide Spectrophotometric Method
YS/T 227.1-1994 Determination of bismuth content in tellurium--Potassium iodide brucine photometric method
YS/T 807.2-2012 Chemical Analysis Methods of Aluminum Hardeners - Part 2: Determination of Manganese Content - Potassium Periodate Spectrophotometric Method
YS/T 568.10-2006 Hafnium oxides--Determination of manganese oxide content--Potassium periodate photometric method

Professional Standard - Aviation

HB 5422.7-1989 Method for chemical analysis of copper alloy Potassium iodide-thiourea absorbance photometry for determination of bismuth content
HB 5219.6-1998 Methods for Chemical Analysis of Magnesium Alloy - Determination of Manganese Content (Including Zirconium and Rare Earth) with Potassium Periodate Spectrophotometric Method
HB 5220.13-2008 Methods for Chemical Analysis of Superalloys-Part 13:Determination of Manganese Content by Potassium Periodate Photometric Method
HB 5218.4-1995 Aluminum Alloy Chemical Analysis Methods Potassium Periodate Photometric Determination of Manganese Content
HB 5297.13-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Manganese Content by Potassium periodate Spectrophtometric Method
HB 5220.13-1995 Method for chemical analysis of superalloys Potassium periodate absorptiometry for determination of manganese content

Shandong Provincial Standard of the People's Republic of China

DB37/T 3313-2018 Determination of Chitosan Content in Fertilizer by Spectrophotometry
DB37/T 3314-2018 Determination of Alginic Acid Content in Fertilizer by Spectrophotometry

Group Standards of the People's Republic of China

T/GBC 23-2024 Determination of crude polysaccharide content in Liubao tea by spectrophotometry
T/NAIA 0133-2022 Determination of Mercury in Industrial Sulfuric Acid - Atomic Fluorescence Spectrophotometry
T/SATA 058-2023 Determination of ammonium ferric citrate in edible salt
T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method
T/GXAF 0010-2023 Spectrophotometric method for the determination of free amino acid content in water-soluble fertilizers
T/QAS 017-2020 Determination of K, Na, Ca, Mg Content in Potassium Chloride X-ray Fluorescence Spectrometry
T/SDAQI 034-2021 Determination of chromium (VI) in fertilizers-Spectrophotometric
T/ZCSIA 8-2023 Determination of total polyphenol content in sweet potato leaves by spectrophotometric method
T/SDAQI 035-2021 Determination of iron oxide content in bauxite Sulfosalicylic acid spectrophotometric method

Jilin Provincial Standard of the People's Republic of China

DB22/T 1670-2012 Determination of lignin content in ginseng by spectrophotometry
DB22/T 2288-2015 Determination of Phospholipid Content in Deer Antler by Spectrophotometry
DB22/T 3427-2023 Volumetric and spectrophotometric methods for the determination of cyanide in thiocyanate-containing wastewater
DB22/T 1691-2012 Rapid Determination of Phosphorus and Potassium in Compound Fertilizers by X-ray Fluorescence Spectrometry

Yunnan Provincial Standard of the People's Republic of China

DB53/T 728-2015 Determination of Indium Content in Zinc Materials - Atomic Absorption Spectrophotometry
DB53/T 729-2015 Determination of germanium content in zinc materials spectrophotometric method

中国石油化工总公司

SH/T 0167-1992 Determination of arsenic content in reformed feed oil (spectrophotometric method)

农业农村部

NY/T 3082-2017 Determination of chlorophyll content in fruits, vegetables and derived products—Spectrophotometry method
NY/T 3676-2020 Determination of total triterpene in ganoderma- Spectrophotometric method

Professional Standard - Nuclear Industry

EJ/T 1000-1996 Determination of Molybdenum in Uranium Ore Potassium Thiocyanate Spectrophotometric Method

国家能源局

SH/T 0966-2017 Determination of aromatic hydrocarbon content in white oil by UV spectrophotometry

Qinghai Provincial Standard of the People's Republic of China

DB63/T 1319-2014 Determination of K, Na, Ca, Mg Content in Potassium Chloride X-ray Fluorescence Spectrometry

Henan Provincial Standard of the People's Republic of China

DB41/T 1706-2018 Determination of Potassium Content in Compound Fertilizers by Energy Dispersive X-ray Fluorescence Spectrometry

Taiwan Provincial Standard of the People's Republic of China

CNS 8997-1982 Method of Test for Copper in Industrial Waste Water - Spectrophotometric Method
CNS 8447-1982 Method for Determination of Potassium Oxide in Feldspar (Flame Photometric Method)

Professional Standard - Speciality

ZB G76002-1990 Determination of phosphorus content in industrial circulating cooling water by spectrophotometric method

Ningxia Provincial Standard of the People's Republic of China

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

Professional Standard - Electricity

DL/T 1203-2013 Analytical Methods for Chloride in Steam and Water in Fossil Fuel Power Plants Spectrophotometric Method Using Mercury Sulfocyanide
DL/T 1984-2019 Determination of ammonia content in fly ash of coal-fired boiler-Spectrophotometric method
DL/T 702-1999 Determination of furfural content in mineral insulating oil by spectrophotometric method

国家质量监督检验检疫总局

SN/T 4389-2015 Determination of the glyoxal content in tissue products - Spectrophotometry

Anhui Provincial Standard of the People's Republic of China

DB34/T 3082-2018 Determination of Calcium, Magnesium, Silicon, Iron, Aluminum, Manganese and Potassium in Calcite X-ray Fluorescence Spectrometry
DB34/T 3086-2018 Determination of hexavalent chromium content in steel plate coating spectrophotometric method

海关总署

SN/T 5256-2020 Determination of phosphorus content in coal microwave ashing-spectrophotometric method

Professional Standard - Energy

NB/SH/T 0891-2014 Spectrophotometric detection of soot in used engine oil samples

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 40998-2021 Determination of hydroxypropyl content in modified starch—Spectrophotometric method

Hunan Provincial Standard of the People's Republic of China

DB43/T 795-2013 Determination of Aluminum Content in Graphite Chromoazurin-S Spectrophotometric Method

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

GB/T 5195.6-2017 Fluorspar - Determination of phosphorus content - Photometric method

PL-PKN

PN C04591 ArkusZ01-1974 Water and waste water Tests for potassium Determination of potassium by flame photometric method
PN C04587 ArkusZ01-1973 Water and waste water Tests for sodium Determination of sodium by fla- me photometric method

NL-NEN

NEN 6442-1979 Water - Flame photometric determination of sodium and potassium content
NEN 6399-1992 Fruit lemonades - Determination of potassium content - Flame photometric method
NEN 2741-1982 Fruit juices - Determination of potassium content - Flame photometric method
NEN 2841-1982 Fruit juices - Determination of potassium content - Flame photometric method
NEN 6424-1988 Water - Determination of potassium content by atomic absorption spectrometry (flame technique)
NEN 6488-1982 Water - Photometric determination of the copper content
NEN 6485-1983 Water - Photometric determination of chromium content
NEN 6669-1981 Water - Photometric determination of arsenic
NEN 6478-1983 Water - Photometric determination of aluminium content
NEN 6495-1984 Water - Photometric determination of the ozone content
NEN 6520-1981 Water - Spectrophotometric determination of chlorophyll a content
NEN 6440-1981 Water - Photometric determination of nitrate content
NEN 6471-1981 Water - Photometric determination of silicate content
NEN 6493-1987 Water - Photometric determination of cyanuric acid content
NEN 6521-1991 Water - Photometric determination of boron content

YU-JUS

JUS H.Z1.171-1983 Testing of industrial vvaters. Determination of iron content. Spectrophotometric method with potassium rodanide
JUS H.Z1.173-1985 Testing of industrial vvaters. Determination of molybdonum content. Spectrophotometric method with potassium thiocyanate
JUS H.G8.456-1991 Reageats. Potassium sulphats. Determination of pbospbate fc.d?ieot. Spectrophotometric metho?
JUS H.G8.434-1990 Reaqents. Potassiuia iodide. Detenaination of phospha.te content. Spectrophotometric method
JUS H.G8.103-1984 Reagents. Potassium chloride. Determination of phosphate content. Spectrophotometric method
JUS H.G8.088-1983 Reagents.Sodium chloride.Determination of potassium content.Flame emission spectrophotometric method
JUS H.G8.110-1984 Reagents. Potassium chloride. Determination of sodium content. Flame emission spectrophotometric method
JUS H.G8.451-1990 Reagents. Zine sulphate heptahvdrate. Determination of potassium and sodium contents. Flame emission speetrophotometric method
JUS H.G8.461-1991 Reagents. Potassium sulpbate. Determinatlon of sodium conteat. Fleaae emlssiem spectrophotometric metbod
JUS H.G8.265-1987 Reagents. Barium chloride dihydrate. Determination of sodium and potasium contents. Flame emission spectrophotometric method
JUS H.G8.163-1984 Reagents. Sodium carbonate anhidrous and sodium carbonate decahydrate. Determination of potassium content. Flame emission spectrophotometric method
JUS H.G8.370-1989 Reagents. Nickel(II) chloride hexahydrate. Determination of sodium and potassium contents. Flame emission spectrophotometric method
JUS H.G8.391-1989 Reagents. Calciun nitrate tetrahydrate. Determination of potassiurn and sodium contents. Flame enission spectrcphotonetric r.iethod
JUS H.Z1.117-1987 Testing of industrial vvaters. Determination content vfsodium and potasium. Flame photometric me- thod
JUS H.G8.518-1991 Reagents. Potassium hydroxide. Determination of sodium content. Flame emission spectrophotometric method
JUS H.G8.438-1990 Reaqents. Potassium iodide. Determination of sodium content. Flame emission spectrophotometric methcd
JUS H.G8.471-1991 Reagents. Nickel(II) sulphate x-hydrate. Determination of sodium and potassium contents. Flame emission spectrophotometric method
JUS H.G8.478-1991 Reagents.Orthophosphoric acid.Determination of sodium and potassum contents.Flame emission spectrophotometric method
JUS H.G8.134-1984 Reagents. Ammoniasolution. Determination ofsodium andpotassium contents. Flame emission spectro- hotometric method
JUS H.G8.346-1988 Reagents Zinec chloride. Determination of sodium and potassium contents.Flane emission speetrophotometric nethod
JUS H.P8.036-1992 Potassium metabisulphite, as pesticide. Determination of arsen content. Spectrophotometric method
JUS H.G8.180-1983 Reagents. Potassium dicyanoaurate (I). Determination of iron content. 1,10-Phenanthroline spectropho- tometric method
JUS H.G8.201-1985 Reagents. Ammonium chloride. Determ inati on of sodium and potassium contents. Flame emission spectrophotometric method
JUS H.G8.462-1991 Reagents.Potassium sulphate.Determination of arsenic content.Silver diethyldithiocarbamate spectrophotometric method
JUS H.Z1.195-1987 Testing of industrial vvaters. Determination of thorium content. Spectrophotometric method.
JUS H.Z1.139-1984 Testing of industrial waters. Determination of cyanide content. Spectrophotometric method
JUS H.Z1.147-1984 Testing of industrial vvaters. Determination content of phenol in concentration more than 20 mg/l. Spectrophotometric method

American Society for Testing and Materials (ASTM)

ASTM D4192-97 Standard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry
ASTM D3561-96 Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry
ASTM D3561-02 Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry
ASTM D3561-02(2007)e1 Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry
ASTM D4192-08 Standard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry
ASTM D4192-03 Standard Test Method for Potassium in Water by Atomic Absorption Spectrophotometry
ASTM D3561-11 Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry
ASTM E1754-17a Standard Test Method for Determination of Low Levels of Water in Liquid Chlorine By Infrared Spectrophotometry
ASTM E1754-17 Standard Test Method for Determination of Low Levels of Water in Liquid Chlorine By Infrared Spectrophotometry

Association Francaise de Normalisation

NF U42-111:2013 Potash fertilizers - Determination of potassium content - Flame photometric method
NF U42-111:1960 Potash fertilizers. Determination of potassium content by flame photometry.
NF V76-112:1980 Fruit and vegetable juices. Determination of the sodius and potassium contents (flame spectrophotometry method).
NF T20-362:1978 Potassium sulphate for industrial or agricultural use. Determination of potassium content.flame emission spectrophotometric method.
NF T20-352:1978 Potassium chloride for industrial or agricultural use. Determination of potassium content.flame emission spectrophotometric method.
NF T20-375:1977 Potassium hydroxide for industrial use. Determination of chlorides content. Photometric method.
NF T20-372:1969 Chemical analysis of potassium hydroxide. Determination of potassium (flame photometry method).
NF T90-139*NF EN ISO 17852:2008 Water quality - Determination of mercury - Method using atomic fluorescence spectrometry
NF T20-355:1978 Potassium chloride for industrial use. Determination of sodium content.flame emission spectrophotometric method).
NF T20-373:1977 Potassium hydroxide for industrial use. Determination of iron content. 1,10-phenanthroline photometric method.
NF T20-377:1977 Potassium hydroxide for industrial use. Determination of sodium content. Flame emission spectrophotometric method.
NF T90-020:1984 Testing water - Determination of sodium and potassium - Atomic absorption spectrometry method.
NF T90-019:1984 Testing water - Determination of sodium and potassium - Flame emission spectrometry method
NF T90-023:1997 Water quality. Determination of phosphorus. Ammonium molybdate spectrometric method.
NF T20-386:1977 Potassium hydroxide for industrial use. Determination of calcium and magnesium contents. Flame atomic absorption method.

TR-TSE

TS 3654-1981 METHODS FOR THE ANALYSIS OF WATER DETERMINATION OF CHROMIUM CONTENT — Permanganate Oxidation Spectrofotometric Method
TS 2113-1975 POTASSIUM HYDROXIDE FOR INDUSTRIAL USE DETERMINATION OF CHLORIDES CONTENT PHOTOMETRIC METHOD
TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method

SE-SIS

SIS SS 02 81 45-1991 Determination ofoilin water — Infrared spectrophotometric method

International Organization for Standardization (ISO)

ISO 2050:1976 Potassium chloride for industrial use; Determination of potassium content; Flame emission spectrophotometric method
ISO 2484:1973 Potassium sulphate for industrial use; Determination of potassium content; Flame emission spectrophotometric method
ISO 7485:2000 Animal feeding stuffs - Determination of potassium and sodium contents - Methods using flame-emission spectrometry
ISO 1550:1973 Potassium hydroxide for industrial use; Determination of sodium content; Flame emission spectrophotometric method
ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 1053:1975 Zinc; Determination of copper content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 9441:1988 Steel; determination of niobium content; PAR spectrophotometric method
ISO 17058:2004 Steel and iron - Determination of arsenic content - Spectrophotometric method
ISO 1655:1975 Raw rubber and rubber latex — Determination of manganese content — Potassium periodate photometric method

British Standards Institution (BSI)

BS ISO 9682-2:2007 Iron ores - Determination of manganese content - Periodate spectrophotometric method
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 ISO 17058:2004 Steel and iron - Determination of arsenic content - Spectrophotometric method
BS ISO 17058:2004(2008) Steel and iron — Determination of arsenic content — Spectrophotometric method

BE-NBN

NBN T 03-206-1980 Potassium sulphate for industrial use - Determination of potassium content - Flame emission spectrophotometric method
NBN T 03-221-1980 Potassium chloride for industrial use - Determination of potassium content - Flame emission spectrophotometric method
NBN EN 1134-1995 Fruit and vegetable juices - Determination of sodium, potassium, calcium and magnesium content by atomic absorption spectrometry (AAS)
NBN EN 1136-1995 Fruit and vegetable juices - Determination of phosphorus content - Spectrometric method
NBN T 03-194-1980 Potassium hydroxide for industrial use - Determination of sodium con-tent - Flame emission spectrophotometric method
NBN T 03-197-1980 Potassium hydroxide for industrial use - Determination of chlorides content - Photometric method
NBN P 32-004-1977 Zinc - Determination of copper content -Spectrophotometric method

Indonesia Standards

SNI 6989.69-2009 Water and wastewater. Part 69: Determination of potassium content by flame atomic absorption spectrophotometry (AAS)
SNI 06-4822-1998 Test methods for manganese content in water by spectrophotometer in persulphate manner
SNI 6989.77-2011 Water and waste water - Part 77: Determination of cyanide (CN-) by spectrophotometry
SNI 06-2481-1991 Water, Test method for boron content by spectrophotometer in a curcumium manuver
SNI 06-6989.21-2004 Water and waste water - Test methods of phenol content by spectrophotometry
SNI 06-6989.9-2004 Water and waste water - Part 9: Test methods of nitrites (NO2-N) by spectrophotometry

RO-ASRO

STAS SR 8934-8-1996 Sodium chloride. Determination of potassium. Flame Photometric Method
SR 7877-2-1995 Water quality. Determination of petroleum products content. Spectrophotometric method

AENOR

UNE 84708:2009 Cosmetic raw materials. Dentifrices. Determination of potassium content in inorganic salts by flame spectrophotometry
UNE 37258:1986 LEAD. DETERMINATION OF ARSENIC CONTENT. SPECTROPHOTOCOLORIMETRY METHOD.

SCC

UNE 36317-1:1985 DETERMINATION OF NITROGEN CONTENT OF STEELS. SPECTROPHOTOMETRIC METHOD
DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
NS-EN 10179:2024 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method

Korean Agency for Technology and Standards (KATS)

KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS E ISO 13312:2007 Iron ores－Determination of potassium content－Flame atomic absorption spectrometric method
KS D ISO 1053-2002(2007) Zinc－Determination of copper content?Spectrophotometric method
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 1053-2012 Zinc－Determination of copper content?Spectrophotometric method
KS D ISO 17058:2005 Steel and iron－Determination of arsenic content－ Spectrophotometric method
KS D ISO 9441-2022 Steel－Determination of niobium content－PAR spectrophotometric method
KS D ISO 17058:2020 Steel and iron — Determination of arsenic content —Spectrophotometric method

German Institute for Standardization

DIN ISO 9964-3:1996 Water quality - Determination of sodium and potassium - Part 3: Determination of sodium and potassium by flame emission spectrometry (ISO 9964-3:1993)
DIN EN 1134:1994-12 Fruit and vegetable juices - Determination of sodium, potassium, calcium and magnesium content by atomic absorption spectrophotometry (AAS); German version EN 1134:1994
DIN EN ISO 17852:2008 Water quality - Determination of mercury - Method using atomic fluorescence spectrometry (ISO 17852:2006); English version of DIN EN ISO 17852:2008-04
DIN EN 1136:1994-12 Fruit and vegetable juices - Determination of phosphorus content; spectrophotometric method; German version EN 1136:1994
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN 1376:1996 Foodstuffs - Determination of saccharin in table top sweetener preparations - Spectrometric method; German version EN 1376:1996

Japanese Industrial Standards Committee (JISC)

JIS K 0400-49-20:1998 Water quality -- Determination of sodium and potassium -- Part 2: Determination of potassium by atomic absorption spectrometry
JIS K 0400-48-10:1998 Water quality -- Determination of sodium and potassium -- Part 3: Determination of sodium and potassium by flame emission spectrometry

CZ-CSN

CSN 65 2102-1985 Potassium hydroxide technical Photocolorimetric method for determination of iron content
CSN ISO 6831:1993 Iron ores. Determination of sodium and/or potassium contents. Flame atomic absorption spectrometric method
CSN 75 7400-1998 Water quality - Determination of silver by atomic absorption spectrometric methods
CSN ISO 7969:1993 Manganese ores and concentrates. Determination of sodium and potassium contents. Flame atomic absorption spectrometric method
CSN EN 10 178-1993 Chemical analysis of ferrous materials. Determination of niobium in steels. Spectrophotometric method

VN-TCVN

TCVN 7724-2007 Water quality.Determination of merdury.Method using atomic fluorescence spectrometry

UY-UNIT

UNIT 374-1974 Measurement of potassium by spectrophotometry
UNIT 631-1981 Measurement of phosphorus content in animal feeds (by spectrophotometry)

GSO

NB/SH/T 0966-2017 Determination of aromatics content in white oil - UV spectrophotometry
GSO ISO 5959:2013 Copper and copper alloys -- Determination of bismuth content -- Diethyldithiocarbamate spectrometric method
OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD
OS GSO ISO 17058:2013 Steel and iron -- Determination of arsenic content -- Spectrophotometric method
GSO ISO 17058:2013 Steel and iron -- Determination of arsenic content -- Spectrophotometric method
OS GSO ISO 9441:2015 Steel -- Determination of niobium content -- PAR spectrophotometric method

IT-UNI

UNI 7332-1974 Chemical analysis of ferrous materials. Determination of tungsten in steel and cast iron. Spectrophotometric method with potassium thiocyanate.

European Committee for Standardization (CEN)

EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
EN ISO 17852:2008 Water quality - Determination of mercury - Method using atomic fluorescence spectrometry (ISO 17852:2006)
EN 1136:1994 Fruit and vegetable juices - Determination of phosphorus content - Spectrometric method

CEN - European Committee for Standardization

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

BELST

STB GOST R 51430-2006 Fruit and vegetable juices. Spectrophotometric method for determination of phosphorus content

ES-AENOR

UNE 59-027-1988 Method for determination of silicon content in leather (silicate spectrophotometry)
UNE 59-027-1-1988 Method for determination of silicon content in leather (silicate spectrophotometry)

Danish Standards Foundation

DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS 285:1990 Water qulity. Total arsenic content. Spectrophotometric method

KR-KS

KS D ISO 17058-2020 Steel and iron — Determination of arsenic content —Spectrophotometric method
KS D ISO 13900-2023 Steel — Determination of boron content — Curcumin spectrophotometric method after distillation

PT-IPQ

NP 1348-1976 Potassium hydroxide used in industry. Measurement of silicon content by photometry

RU-GOST R

GOST R 51430-1999 Fruit and vegetable juices. Spectrophotometric method for determination of phosphorus content