Determination of total nitrogen content in water by spectrophotometry

Determination of total nitrogen content in water by spectrophotometry, Total:249 items.

The international standard classification for "Determination of total nitrogen content in water by spectrophotometry" includes: Pharmaceutics , Fruits and derived products , Fruits. Vegetables , General methods of tests and analysis for food products , Farming and forestry in general , Non-metalliferous minerals , Cereals, pulses and derived products , Ferroalloys , Ferrous metals in general , Paints and varnishes , Water quality , Iron ores , Animal feeding stuffs , Chemical analysis , Natural gas , Organic acids , Latex and raw rubber , Chemical analysis of metals , Materials for aerospace construction .

The Chinese standard classification for "Determination of total nitrogen content in water by spectrophotometry" includes: Basic standards and general methods for water treatment agent , Basic standards and general methods on chemical fertilizers , Soil and fertilizer in general , Melon, fruit and vegetable planting and product , Animal husbandry in general , Metallurgical auxiliary material ore , Cereal crop and forage crop in general , Steel and iron alloy analysis method , Basic standard and general method for coating , Analysis methods for toxic substances in water , Iron ore , Livestock and poultry feed and additive , Chemical raw material ore , Petroleum and natural gas in general , Fuel oil , Organic chemicals in general , Forestry chemical raw material , Light metals and their alloys analysis method , Heavy metals and their alloys analysis method .

Professional Standard - Chemical Industry

HG/T 4327-2012 Reclaimed water—Determination of total iron content—Spectrophotometric method
HG/T 3540-1990 Determination of phosphor in industrial circulating cooling water Ammonium molybdate spectrophotometric method
HG/T 2958.7-1988 Celestite ores-Determination of iron content-Sulphosalicylic acid spectrophotometric method

Professional Standard - Agriculture

NY/T 2335-2013 Determination of pentosans in cereal—Spectro-photometric method
NY/T 2016-2011 Determination of pectin content in fruit and derived product-Spectrophotometry method
NY/T 1600-2008 Determination of tannin content in fruit, vegetable and derived product - Spectrophotometry method
NY/T 30-1986 Determination of rare earth oxide content in soil - Chlorophonazo - P - Hippuric acid photometric method
NY/T 2332-2013 Determination of total sugars in red ginseng—Spectrophotometry
GB 6260-1986 Determination of rare earth oxide content in soil--Chlorophosphonazo-p-hippuric acid photometric method
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method

Group Standards of the People's Republic of China

T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method
T/GBC 23-2024 Determination of crude polysaccharide content in Liubao tea by spectrophotometry
T/ZCSIA 9-2023 Determination of total flavonoid content in strawberries and their products by spectrophotometric method
T/ZJATA 0025-2024 Water quality Total nitrogen determination Prefabricated chromotropic acid reagent spectrophotometry
T/ZCSIA 8-2023 Determination of total polyphenol content in sweet potato leaves by spectrophotometric method
T/SDAQI 034-2021 Determination of chromium (VI) in fertilizers-Spectrophotometric
T/ZCSIA 7-2023 Spectrophotometric method for determination of total phenolic content in large cherries and their products

农业农村部

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

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

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

GB/T 23993-2009 Determination of formaldehyde content of waterborne coatings—Spectrophtometric method with acetylacetone
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 16633-1996 Industrial circulating cooling water--Determination of silica--Spectrophotometric method
GB/T 24583.5-2009 Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
GB/T 24583.5-2019(英文版) Determination of phosphorus content in vanadium-nitrogen alloys - Bismuth phosphomolybdenum blue spectrophotometric method
GB/T 6437-2002 Determination of phosphorus in feed--Spectphotometry
GB/T 16781.2-1997 Natural gas-Determination of mercury--Cold atomic fluorescent spectrophotometry
GB/T 6730.44-2017(英文版) Iron ore - Determination of zinc content - 1-(2-pyridyl azo)-2-naphthol spectrophotometric method
GB/T 7717.8-1994 Acrylonitrile - Determination of total aldehydes
GB/T 223.70-2008 Iron steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method
GB/T 6730.24-2006 Iron ores - Determination of total rare earth contents - Chlorophosphonazo mA spectrophotometric method
GB/T 20574-2006 Method for determination of total flavonoids in propolis - Colorimetric method
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB 9018.7-1988 Celestite ores--Determination of iron content--Sulphosalicylic acid spectrophotometric method
GB/T 5195.10-2006 Fluorspar - Determination of iron content - 1, 10-phenanthroline spectrophotometric method
GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 4702.7-2016 Chromium metal─Determination of nitrogen content─Distillation-nessler reagent spectrophotometric method
GB/T 6730.89-2024 Iron ores—Determination of thorium content—Arsenazo Ⅲ spectrophotometric method

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 2963-2021 Determination of Trace Calcium Content in Natural Flake Graphite by Calcium-Arsenazo Ⅲ Spectrophotometric Method
DB23/T 1382-2010 Spectrophotometric method for determination of urea content in feed

Anhui Provincial Standard of the People's Republic of China

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

Professional Standard - Petrochemical Industry

SH/T 0182-1992 Determination of copper content in light petroleum (spectrophotometric method)
SH/T 0559-1993 Determination method of alkyl nitrate content in diesel oil (spectrophotometric method)
SH/T 1499.7-1997 Pure Adipic Acid - Determination of Content of Nitric Acid - 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)

工业和信息化部

YB/T 4566.6-2016 Ferrovanadium nitride. Determination of phosphorus content. Molybdobismuthylphosphoric blue spectrophotometric method
YB/T 4582.9-2017 Ferrosilicon nitride. Determination of titanium content. Diantipyrylmethane spectrophotometric method
YB/T 4582.2-2017 Ferrosilicon nitride. Determination of chromium content. Diphenylcarbonhydrazide spectrophotometric method
YB/T 4582.3-2017 Ferrosilicon nitride-Determination of phosphorus content-Bismuth phosphomolybdate blue spectrophotometric method
YB/T 4582.6-2017 Ferrosilicon nitride-Determination of manganese content-Sodium periodate spectrophotometric method

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 39544-2020 Natural rubber latex concentrate—Determination of total phosphate content—Spectrophotometric method
GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
GB/T 24583.5-2019 Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 6437-2018 Determination of phosphorus in feeds—Spectrophotometry

Professional Standard - Environmental Protection

HJ 667-2013 Water quality-Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride
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 Water quality—Determination of azide—Spectrophotometry
HJ 550-2009 Water quality - Determination of cobalt - 5-CI-PADAB spectrophotometry
HJ 536-2009 Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
HJ 535-2009 Water Quality - Determination of Ammonia Nitrogen - Nesslers Reagent Spectrophotometry

Professional Standard - Aviation

HB 5220.42-1995 Determination of Cerium Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5297.13-1984 Determination of Cerium in Titanium Alloy Chlorophosphine Azo Ⅲ Absorption Spectrophotometry
HB 5422.23-1989 Chemical Analysis Methods for Copper Alloy - Arsenazo III Absorption Photometry for the 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)
HB 5297.17-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Zirconium Content by Arsenazo iii Photometric Method
HB 5220.43-1995 Determination of Lanthanum Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5220.48-1995 Superalloy Chemical Analysis Method Water Steam Distillation - Volumetric Method (or Absorptiometry) Determination of Nitrogen Content
HB 5297.20-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Cerium Content by Chlorophosphonazo III Spectrophotometric Method

Shandong Provincial Standard of the People's Republic of China

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

Professional Standard - Ferrous Metallurgy

YB/T 5330-2009 Vanadium pentoxid - Determination of iron content-The ortho-phenanthroline spectrophotome method

中华人民共和国环境保护部

GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method

Professional Standard - Ocean

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

Jilin Provincial Standard of the People's Republic of China

DB22/T 2288-2015 Determination of Phospholipid Content in Deer Antler by Spectrophotometry
DB22/T 1670-2012 Determination of lignin content in ginseng by spectrophotometry
DB22/T 3427-2023 Volumetric and spectrophotometric methods for the determination of cyanide in thiocyanate-containing wastewater

Yunnan Provincial Standard of the People's Republic of China

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)

Professional Standard - Nuclear Industry

EJ/T 20167-2018 Determination of nitrogen content in reprocessed uranium trioxide powder by distillation-Nessler reagent spectrophotometry
EJ/T 20172-2018 Determination of Nitrogen in Sodium Cooled Fast Neutron Breeder Reactor by Spectrophotometry

Tianjin Provincial Standard of the People's Republic of China

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

Professional Standard - Commodity Inspection

SN/T 3810-2014 Determination of nitrogen content in urea and ammonium sulfate- Fluorescent spectrometry for X-ray
SN/T 4779.3-2017 Determination of total hardness in bottled water for export—Method by spectrophotometry coupled with flow injection analysis(FIA)
SN/T 3097-2012 Determination of total nitrogen in fertilizers-Combustion

国家能源局

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

Professional Standard - Urban Construction

CJ/T 63-1999 Municipal sewage.Determination of aniline compounds.AZO spectrophotometric method

Taiwan Provincial Standard of the People's Republic of China

CNS 7831-1981 Method for Determination of Iron in Manganese Ores (O - Phenanthroline Absorptionmetric Method)
CNS 14573-2001 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method

Hunan Provincial Standard of the People's Republic of China

DB43/T 1403-2018 Water Quality Determination of Ammonia Nitrogen-Gas-liquid Separation and Collection Spectrophotometry

Professional Standard - Speciality

ZB G76002-1990 Determination of phosphorus content in industrial circulating cooling water by spectrophotometric 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
NS-EN ISO 4945:2009 Steel — Determination of nitrogen content — Spectrophotometric method (ISO 4945:1977)
AENOR UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
SPC GB/T 24583.5-2019 Vanadium-nitrogen -- Determination of phosphorus content -- Bismuth molybdenum blue spectrophotometric method (TEXT OF DOCUMENT IS IN CHINESE)
DANSK DS/EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
NS-EN ISO 5378:1994 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method (ISO 5378:1978)
DIN EN 10179 E:2023 Draft Document - Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023
DANSK DS/EN ISO 3946:1994 Starches and derived products - Determination of total phosphorus content - Spectrophometric method
BS 5766-3:1981 Methods for analysis of animal feeding stuffs-Determination of total phosphorus content (spectrophotometric method)
BS 5697-2:1979 Methods of test for starch and its derivatives and by-products. Determination of nitrogen conteny by the Kjeldahl method ( spectrophotometric method)
AENOR UNE 36317-2:1989 Chemical analysis of ferrous materials - Determination of nitrogen (trace mounts) in steel - Spectrophotometric method
NS-EN 10179:1989 Chemical analysis of ferrous materials — Determination of nitrogen (trace mounts) in steel — Spectrophotometric method

Korean Agency for Technology and Standards (KATS)

KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－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(2018) Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS H ISO 3946-2023 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
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 H ISO 3946:2008 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS I ISO 6332:2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS D ISO 1053-2002(2007) Zinc－Determination of copper content?Spectrophotometric method
KS M ISO 5400-2012(2017) Leather－Determination of total silicon content－Reduced molybdosilicate spectrometric method

European Committee for Standardization (CEN)

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

International Organization for Standardization (ISO)

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 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
ISO 6607:1985 Aluminium ores; Determination of total silicon content; Combined gravimetric and 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 6595:1982 Water quality; Determination of total arsenic; Silver diethyldithiocarbamate spectrophotometric method
ISO 1053:1975 Zinc; Determination of copper content; Spectrophotometric method

CEN - European Committee for Standardization

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

German Institute for Standardization

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 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 ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018
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 ISO 3946:1986 Starches and derived products; determination of the total phosphorus content; spectrophotometric method; identical with ISO 3946, edition 1982
DIN EN 1136:1994-12 Fruit and vegetable juices - Determination of phosphorus content; spectrophotometric method; German version EN 1136:1994

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
DS 292:1985 Water analysis. Total phosphor. Photometric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN 10179:1989 Chemical analysis of ferrous materials. Determination of nitrogen (trace amount) in steels. Spectrophotometric method
DS 291:1985 Water analysis. Phosphate. Photometric method
DS/EN 26595:1993 Water quality. Determination of total arsenic. Silver diethyldithiocarbamate spectrophotometric method
DS/EN ISO 3946:1995 Starches and derived products - Determination of total phosphorus content - Spectrophometric method

GSO

OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
NB/T 11531-2024 Determination of total phosphorus, ammonia nitrogen and permanganate index in coal mine water - Flow injection-spectrophotometry
GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD
GSO ISO 5378:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Spectrophotometric method
OS GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD
GSO ISO 13730:2014 Meat and meat products -- Determination of total phosphorus content -- Spectrometric method
GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
OS GSO ISO 3946:2015 Starches and derived products -- Determination of total phosphorus content -- Spectrophotometric method
GSO ISO 3946:2015 Starches and derived products -- Determination of total phosphorus content -- Spectrophotometric method
GSO ISO 5400:2014 Leather -- Determination of total silicon content -- Reduced molybdosilicate spectrometric method
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

British Standards Institution (BSI)

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 3946:1994 Starches and derived products - Determination of total phosphorus content - Spectrometric method
BS EN ISO 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
BS EN ISO 4945:2018 Steel. Determination of nitrogen. Spectrophotometric method
BS EN 26595:1983 Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method
DD ENV 12260-1996 Water quality. Determination of nitrogen. Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection

Association Francaise de Normalisation

NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF V18-106:1980 Animal feeding stuffs. Determination of total phosphorus content. Spectrophotometric method.
NF V18-106*NF ISO 6491:2011 Animal feeding stuffs - Determination of phosphorus content - Spectrophotometric method
NF T90-026:1993 Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method.
NF T90-139*NF EN ISO 17852:2008 Water quality - Determination of mercury - Method using atomic fluorescence spectrometry
NF V03-608*NF EN ISO 5378:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.
NF T90-131:1986 TESTING WATER. DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMETRY. METHOD AFTER DIGESTION WITH BROMINE.
NF V03-613*NF EN ISO 3946:1994 Starches and derived products. Determination of total phosphorus content. Spectrophotometric method.
NF A06-323:1987 Chemical analysis of steels. Determination of nitrogen content. Molecular absorption spectrophotometric method.
NF T90-080:1997 Water quality - Determination of ammonium nitrogen by flow analysis (CFA and FIA) and spectrometric detection.
NF A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

TR-TSE

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

SE-SIS

SIS SS 02 81 45-1991 Determination ofoilin water — Infrared spectrophotometric method
SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method
SIS SS 02 81 76-1986 Determination of total cyanide in water - Photometric or titrimetric method
SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water

AENOR

UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE-EN ISO 5378:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDHAL METHOD. SPECTROPHOTOMETRIC METHOD. (ISO 5378:1978).

RO-ASRO

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 7877-2-1995 Water quality. Determination of petroleum products content. Spectrophotometric method

Lithuanian Standards Office

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)

NL-NEN

NEN 6489-1982 Water - Photometric determination of total cyanide content
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 2848-1986 Fruit juices - Determination of the total pectin content - Spectrophotometric method
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-ISO 6595:1993 Water quality. Determination of total arsenic. Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982)

YU-JUS

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 H.B8.043-1991 Liquid hydrocarbons. Determination of total chloride content. Spectrophotonetric method
JUS H.G8.418-1991 Reagents. Sodium hvdroxide. Determination of arsenic content. Silver diethvldithiocarbamate spectrophotometric method
JUS H.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption 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 H.G8.130-1984 Reagents. Ammonia solution. Determination of iron content. 1,10—Phenanthrolinespectrophotometric method
JUS H.Z1.178-1985 Testing of industrial vvaters. Determination of total mercury content. Specirophotometric method with diphenyl-tiocarbazone
JUS H.Z1.195-1987 Testing of industrial vvaters. Determination of thorium content. Spectrophotometric method.

KR-KS

KS H ISO 5378-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 3946-2008(2023) Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
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

CSN EN 10 179-1993 Chemical analysis of ferrous metals — Determination of nitrogen (trace amounts) in steels — Spectrophotometric method
CSN 65 1025 Cast.10-1989 Sulphuric acid for industrial use. pectrophotometric method for the etermination of total nitrogen xides
CSN 75 7400-1998 Water quality - Determination of silver by atomic absorption spectrometric methods

RU-GOST R

GOST 31980-2012 Milk. Spectrometric method for determination of total phosphorus content
GOST 31584-2012 Milk. Spectrophotometric method for determination of total phosphorus content
GOST 28902-1991 Animal feeding stuffs. Determination of total phosphorus content. Spectrophotometric method
GOST 30181.5-1994 Mineral fertilizers. Method for determination of mass fraction of amide nitrogen in compound fertilizers (spectrophotocolorimetric method)
GOST R 51482-1999 Meat and meat products. Spectrophotometric method for determination of total phosphorus content

IT-UNI

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

Indonesia Standards

SNI 06-4822-1998 Test methods for manganese content in water by spectrophotometer in persulphate manner
SNI 6989.17-2009 Water and wastewater. Part 17: Determination of total chromium content by flame atomic absorption spectrophotometry (AAS)

BSI

BS EN 10179:2024 Steels. Determination of nitrogen (trace amounts). Spectrophotometric method

BE-NBN

NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN EN 1136-1995 Fruit and vegetable juices - Determination of phosphorus content - Spectrometric method
NBN T 95-301-1977 Determination of the nitrogen oxides content of flue gasses -Photometrie method with chromotropic acid
NBN-EN 10179-1992 Chemical analysis of ferrous materials. Determination of nitrogen (trace amounts) in steels. Spectrophotometric method
NBN-EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

VN-TCVN

TCVN 7724-2007 Water quality.Determination of merdury.Method using atomic fluorescence spectrometry
TCVN 2825-1999 Aluminium ores.Determination of total silicon content.Combined gravimetric and spectrophotometry method

ES-UNE

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)

ES-AENOR

UNE 36-317 Pt.1-1985 Determination of nitrogen in steel. Spectrophotometry

PL-PKN

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

PT-IPQ

NP 1841-1985 fish. Determination of trimethylamine nitrogen content (N-TMA). photometry

American Society for Testing and Materials (ASTM)

ASTM UOP276-85 Pyrrole Nitrogen in Petroleum Distillates by Visible Spectrophotometry
ASTM UOP682-84 Total Cyanide in Refinery Waters by Visible Spectrophotometry

CU-NC

NC 04-27-1969 Photometric determination of total silicon in steels and cast irons

BELST

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

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