Photometric Total Nitrogen

Photometric Total Nitrogen, Total:76 items.

The international standard classification for "Photometric Total Nitrogen" includes: Water quality , Metalliferous minerals , Iron ores , Cereals, pulses and derived products , Aluminium and aluminium alloys .

The Chinese standard classification for "Photometric Total Nitrogen" includes: Analysis methods for toxic substances in water , Analysis methods for exhaust emission pollutants , Iron ore , Cereal crop and forage crop in general , Heavy metals and their alloys , Heavy metal ore , Soil and fertilizer 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/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/ZJATA 0025-2024 Water quality Total nitrogen determination Prefabricated chromotropic acid reagent spectrophotometry

Professional Standard - Environmental Protection

HJ 536-2009 Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
HJ 550-2009 Water quality - Determination of cobalt - 5-CI-PADAB spectrophotometry
HJ/T 199-2005 Water quality -- Determination of total-nitrogen Gas-phase molecular absorption spectrometry
HJ 668-2013 Water quality-Determination of total nitrogen by flow injection analysis（FIA）and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 667-2013 Water quality-Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride
HJ/T 64.3-2001 Stationary source emission -- Determination of cadmium p-Azobenzenediazoaminazobenzene sulfonic acid spectrophotometric method
HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
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

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

GB/T 6730.24-2006 Iron ores - Determination of total rare earth contents - Chlorophosphonazo mA spectrophotometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
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/T 6987.24-2001 Aluminium and aluminium alloys. Determination of copper content. Tribromoarsenazo spectrophotometric method
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
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 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 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method

Professional Standard - Agriculture

HJ 199-2023 Water quality―Determination of total nitrogen ―Gas-phase molecular absorption spectrometry
NY/T 30-1986 Determination of rare earth oxide content in soil - Chlorophonazo - P - Hippuric acid photometric method
GB 6260-1986 Determination of rare earth oxide content in soil--Chlorophosphonazo-p-hippuric acid photometric method

Professional Standard - Aviation

HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group

Professional Standard - Water Conservancy

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

Professional Standard - Non-ferrous Metal

YS/T 575.14-2006 Methods for chemical analysis of bauxite -- Determination the total content of rare earth oxide -- Tribromo-arsenazo photometric method

中华人民共和国环境保护部

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

Jilin Provincial Standard of the People's Republic of China

DB22/T 1932-2013 Determination method of total nitrogen content in peat (Kjeldahl method)

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 EN ISO 5378:1994 Starches and derived products - Determination of nitrogen according to the Kjeldahl method - Spectrophotometric method

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

British Standards Institution (BSI)

BS EN ISO 4945:2018 Steel. Determination of nitrogen. Spectrophotometric method
BS EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
BS EN ISO 4945:2010 Steel. Determination of nitrogen content. Spectrophotometric method

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

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 ISO 4945 E:2018-01 Determination of steel nitrogen by spectrophotometry (draft)
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 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

Spanish Association for Standardization (UNE)

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
UNE 36-317 Pt.1-1985 Determination of nitrogen in steel. Spectrophotometry
UNE 36317-1:1985 DETERMINATION OF NITROGEN CONTENT OF STEELS. SPECTROPHOTOMETRIC METHOD
UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

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

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

International Organization for Standardization (ISO)

ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

European Committee for Standardization (CEN)

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

Korean Agency for Technology and Standards (KATS)

KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method

SCC

DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
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 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
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)

BSI

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

GOST

GOST 34789-2021 Brewing products. Identification. Determination of mass concentration of total nitrogen by Kjeldahl 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
NB/T 11531-2024 Determination of total phosphorus, ammonia nitrogen and permanganate index in coal mine water - Flow injection-spectrophotometry

NL-NEN

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

RO-ASRO

STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method