Spectrophotometric detection of total nitrogen

Spectrophotometric detection of total nitrogen, Total:195 items.

The international standard classification for "Spectrophotometric detection of total nitrogen" includes: Water quality , Iron ores , Cereals, pulses and derived products , Metalliferous minerals , Animal feeding stuffs , Aluminium and aluminium alloys , Non-metalliferous minerals , Cadmium, cobalt and their alloys , Ferroalloys , Other non-ferrous metals and their alloys , Ferrous metals in general , Welding consumables , Pharmaceutics , Fruits. Vegetables , Materials for aerospace construction , Chemical analysis of metals , Materials for the reinforcement of composites in general .

The Chinese standard classification for "Spectrophotometric detection of total nitrogen" includes: Hydrogeological survey , Analysis methods for toxic substances in water , Environmental Quality Standard for atmosphere, water and soil , Analysis methods for exhaust emission pollutants , Iron ore , Cereal crop and forage crop in general , Livestock and poultry feed and additive , Heavy metals and their alloys , Metallurgical auxiliary material ore , Heavy metals and their alloys analysis method , Steel and iron alloy analysis method , Rare metals and their alloys analysis method , Semimetal and semiconductor material analysis method , Heavy metal ore , Soil and fertilizer in general , Basic standards and general methods on chemical fertilizers , Basic standards and general methods , Light metals and their alloys analysis method , Basic standards and general methods for water treatment agent , Carbon material in general .

Group Standards of the People's Republic of China

T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/YNRZ 011-2024 The Determination of Total Amino Acids in Coffee beans With Spectrophotometry
T/ZJATA 0024-2024 Water quality Determination of ammonia nitrogen Pre-made Nessler reagent spectrophotometry
T/ZJATA 0025-2024 Water quality Total nitrogen determination Prefabricated chromotropic acid reagent spectrophotometry
T/GDFDTAEC 03-2022 Determination of total ginsenosides in health food by Spectrophotometry
T/CHES 27-2019 Water Quality Determination of Ammonia Nitrogen Automatic Analysis Nessler's Reagent Spectrophotometry
T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method

Professional Standard - Geology

DZ/T 0064.23-1993 Groundwater quality test methods - the determination of iron with naphthisodiazine spectrophotometric determination

未注明发布机构

ASTM RR-D19-1194 2016 D8083-Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
DIN EN ISO 4945 E:2018-01 Determination of steel nitrogen by spectrophotometry (draft)

Professional Standard - Environmental Protection

HJ 535-2009 Water Quality - Determination of Ammonia Nitrogen - Nesslers Reagent Spectrophotometry
HJ/T 346-2007 Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
HJ 665-2013 Water quality - Determination of ammonium nitrogen by continuous flow analysis(CFA) and Salicylic acid spectrophotometry
HJ/T 199-2005 Water quality -- Determination of total-nitrogen Gas-phase molecular absorption spectrometry
HJ 1191-2021 Water quality—Determination of azide—Spectrophotometry
HJ 636-2012 Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method
HJ 666-2013 Water quality-Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry
HJ 479-2009 Ambient air - Determination of nitrogen oxides - N-(1-naphthyl) ethylene diamine dihydrochloride spectrophotometric method
HJ 667-2013 Water quality-Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride
HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
HJ 550-2009 Water quality - Determination of cobalt - 5-CI-PADAB spectrophotometry
HJ 668-2013 Water quality-Determination of total nitrogen by flow injection analysis（FIA）and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 536-2009 Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
HJ/T 64.3-2001 Stationary source emission -- Determination of cadmium p-Azobenzenediazoaminazobenzene sulfonic acid spectrophotometric method

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

GB/T 6437-2002 Determination of phosphorus in feed--Spectphotometry
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 20931.4-2007 Methods for chemical analysis of lithium-Determination of iron content-Orthopenanthroline spectrophotometric method
GB/T 11843-1989 Uranium dioxide powder and pellets. Determination of nitrogen. Spectrophotometric method
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
GB/T 24583.5-2009 Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 20931.9-2007 Methods for chemical analysis of lithium—Determination of nitrogen content—Mercuric potassium iodide spectrophotometric method
GB/T 7468-1987 Water quality; Determination of total mercury; Cold atomic absorption spectrophotometry
GB/T 4699.3-2007 Ferrochromium silicochromium and nitrogen-bearing ferrochromium—Determination of phosphorus content—Molybdobismuthylphosphoric blue spectrophotometric method and the molybdenum blue s
GB/T 8220.2-1998 Methods for chemical analysis bismuth--Determination of iron content--1, 10-Phenanthroline photometric method
GB/T 24583.5-2019(英文版) Determination of phosphorus content in vanadium-nitrogen alloys - Bismuth phosphomolybdenum blue spectrophotometric method
GB/T 5195.10-2006 Fluorspar - Determination of iron content - 1, 10-phenanthroline spectrophotometric method
GB/T 223.49-1994 Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content
GB/T 6730.24-1986 Methods for chemical analysis of iron ores; The arsenazo 3 photometric method for the determination of rare earth elements content
GB 11843-1989 Determination of Nitrogen in Uranium Dioxide Powder and Pellets Spectrophotometric Method
GB/T 6987.24-2001 Aluminium and aluminium alloys. Determination of copper content. Tribromoarsenazo spectrophotometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB/T 10574.5-1989 Tin-lead solders-Determination of iron content-1,10-phenanthroline spectrophotometric method
GB/T 223.70-2008 Iron steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method
GB/T 11198.11-1989 Sulphuric acid for industrial use--Determination of oxides of nitrogen-2.4-xylenol spectrophotometric method
GB/T 11893-1989 Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 6730.89-2024 Iron ores—Determination of thorium content—Arsenazo Ⅲ spectrophotometric method
GB 7468-1987 Determination of Total Mercury in Water Quality by Cold Atomic Absorption Spectrophotometry
GB/T 6730.24-2006 Iron ores - Determination of total rare earth contents - Chlorophosphonazo mA spectrophotometric method
GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
GB/T 7480-1987 quality - Determination of nitrate - Spectrophotometric method with phenol disulfonic acid
GB/T 14849.1-1993 Silicon metal－Determination of iron content－1,10-Phenanthroline spectrophotometric method

Professional Standard - Urban Construction

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

Professional Standard - Water Conservancy

SL 84-1994 Determination of nitrogen(nitrate) (Ultraviolet spectrophtometric method)

中华人民共和国环境保护部

GB 11894-1989 Water quility-Determination of total nitrogen UV spectrophotometric method-Alkaline potassium persulfate digestion method
GB 11893-1989 Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method
GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
GB 7480-1987 Water quality-Determination of nitrate-Spectrophotometric method with phenol disulfonic acid

Professional Standard - Agriculture

GB 6260-1986 Determination of rare earth oxide content in soil--Chlorophosphonazo-p-hippuric acid photometric method
NY/T 30-1986 Determination of rare earth oxide content in soil - Chlorophonazo - P - Hippuric acid photometric method
HJ 199-2023 Water quality―Determination of total nitrogen ―Gas-phase molecular absorption spectrometry
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method
NY/T 2332-2013 Determination of total sugars in red ginseng—Spectrophotometry
NY/T 1373-2007 Determination of Sulfite in Edible Fungus - Distill under Nitrogen with the Method of Spectrophotometer

Tianjin Provincial Standard of the People's Republic of China

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

国家市场监督管理总局、中国国家标准化管理委员会

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

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 - Aviation

HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
HB 5220.39-2008 Methods for Chemical Analysis of Superalloys - Part 39: Determination of Total Rare Earth Content by Pmbp Direct Extraction-Arsenazo III Photometric Method
HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group
HB 5297.17-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Zirconium Content by Arsenazo iii Photometric Method

Professional Standard - Non-ferrous Metal

YS/T 74.7-1994 Cadmium Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 536.2-2006 Bismuth Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content

Professional Standard - Nuclear Industry

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

工业和信息化部

YB/T 4566.6-2016 Ferrovanadium nitride. Determination of phosphorus content. Molybdobismuthylphosphoric blue spectrophotometric method
YB/T 4582.3-2017 Ferrosilicon nitride-Determination of phosphorus content-Bismuth phosphomolybdate blue spectrophotometric method
YB/T 5157-2016 Determination of iron in graphite products of high purity by ortho-Phenathroline spectrophotometric method
YB/T 4582.6-2017 Ferrosilicon nitride-Determination of manganese content-Sodium periodate spectrophotometric method

Taiwan Provincial Standard of the People's Republic of China

CNS 13071-1992 Method of Test for Color of Water`6rSpectrophotometric Method`6s

Professional Standard - Rare Earth

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

农业农村部

NY/T 3676-2020 Determination of total triterpene in ganoderma- Spectrophotometric method

Professional Standard - Chemical Industry

HG/T 4327-2012 Reclaimed water—Determination of total iron content—Spectrophotometric method

Professional Standard - Ferrous Metallurgy

YB/T 5330-2009 Vanadium pentoxid - Determination of iron content-The ortho-phenanthroline spectrophotome method
YB/T 5157-1993 Determination of iron in graphite products of high purity by ortho - Phenathroline photometric method

Yunnan Provincial Standard of the People's Republic of China

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

Association Francaise de Normalisation

NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
NF T90-080:1997 Water quality - Determination of ammonium nitrogen by flow analysis (CFA and FIA) and spectrometric detection.
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF V03-608*NF EN ISO 5378:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.
NF 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 M07-058:1992 Produits pétroliers - Dosage de l'azote total dans les distillats pétroliers - Méthode par combustion et détection par chimioluminescence.
NF T20-297:1971 Chemical analysis of sulphuric acid and oleum. Determination of ammoniacal nitrogen. Spectrophotometric method.
NF A06-323:1987 Chemical analysis of steels. Determination of nitrogen content. Molecular absorption spectrophotometric method.
NF EN ISO 13395:1996 Water quality - Determination of nitrous nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

British Standards Institution (BSI)

BS EN ISO 4945:2018 Steel. Determination of nitrogen. 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
23/30472739 DC BS EN 10179. Steels. Determination of nitrogen (trace amounts). Spectrophotometric 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

ES-UNE

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

German Institute for Standardization

DIN EN ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018
DIN EN 10179:2023-07 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10179 (1990-04).
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994

KR-KS

KS D ISO 4945-2022 Steel — Determination of nitrogen — Spectrophotometric method
KS H ISO 5378-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS I ISO 6332-2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline

CZ-CSN

CSN 65 1025 Cast.10-1989 Sulphuric acid for industrial use. pectrophotometric method for the etermination of total nitrogen xides
CSN 42 0691 Cast.2-1985 Chemical analysis of non-ferrous metals and alloys. Titanium. Determination of nitrogen by the photometric method and titrimetric method
CSN ISO 6332:1995 Water quality - Determination of iron - Spectrometric method using 1,10-phenantroline

European Committee for Standardization (CEN)

EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

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 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
ISO 6491:1980 Animal feeding stuffs; Determination of total phosphorus content; Spectrophotometric method
ISO 6332:1982 Water analysis — Determination of iron — 1,10-phenanthroline photometric method

CEN - European Committee for Standardization

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

Danish Standards Foundation

DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS 285:1990 Water qulity. Total arsenic content. Spectrophotometric method
DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

Korean Agency for Technology and Standards (KATS)

KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2023 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 I ISO 6332:2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS D ISO 1812-2002(2022) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS H ISO 5378:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS D ISO 1812-2002(2017) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS E ISO 6607-2011(2016) Aluminium ores－Determination of total silicon content－Combined gravimetric and spectrophotometric method

GSO

OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
GSO ISO 5378:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Spectrophotometric method
GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS 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 9390:2013 Water quality - Determination of borate - Spectrometric method using azomethine-H
OS GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD
OS GSO ISO 29441:2013 Water quality -- Determination of total nitrogen after UV digestion -- Method using flow analysis (CFA and FIA) and spectrometric detection

SCC

DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
UNE 36317-1:1985 DETERMINATION OF NITROGEN CONTENT OF STEELS. SPECTROPHOTOMETRIC METHOD
DIN EN 10179 E:2023 Draft Document - Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023
NS-EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
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)
DANSK DS/EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DIN EN ISO 4945 E:2018 Draft Document - Steel - Determination of nitrogen - Spectrophotometric method (ISO/DIS 4945:2017); German and English version prEN ISO 4945:2017
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 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
NS-EN ISO 5378:1994 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method (ISO 5378:1978)
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

BSI

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

RO-ASRO

STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS SR 9763-13-1996 Spices and condiments. Determination of nitrogen content by the Kjeldahl method. Spectrophotometric method

AENOR

UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

American Society for Testing and Materials (ASTM)

ASTM UOP276-85 Pyrrole Nitrogen in Petroleum Distillates by Visible Spectrophotometry
ASTM D8083-16(2023) Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D8083-16 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection

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)

YU-JUS

JUS H.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method
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.Z1.178-1985 Testing of industrial vvaters. Determination of total mercury content. Specirophotometric method with diphenyl-tiocarbazone
JUS H.G8.418-1991 Reagents. Sodium hvdroxide. Determination of arsenic content. Silver diethvldithiocarbamate spectrophotometric method
JUS H.G8.130-1984 Reagents. Ammonia solution. Determination of iron content. 1,10—Phenanthrolinespectrophotometric method

ES-AENOR

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

TR-TSE

TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric 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 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method
SIS SS 18 71 60-1983 General method for the determination of arsenic - Silver diethyldithiocarbamate photometric method

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

IT-UNI

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

NL-NEN

NEN 2848-1986 Fruit juices - Determination of the total pectin content - Spectrophotometric method
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis

BE-NBN

NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method

Japanese Industrial Standards Committee (JISC)

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