spectrophotometric nitrate nitrogen

spectrophotometric nitrate nitrogen, Total:77 items.

The international standard classification for "spectrophotometric nitrate nitrogen" includes: Water quality , Organic nitrogen compounds .

The Chinese standard classification for "spectrophotometric nitrate nitrogen" includes: Environmental Quality Standard for atmosphere, water and soil , Analysis methods for toxic substances in water , Chemical reagent in general , Boiler and its auxiliary equipment , Organic chemicals in general , Agriculture and forestry technology .

Professional Standard - Environmental Protection

HJ/T 346-2007 Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
HJ/T 197-2005 Water quality -- Determination of nitrite-nitrogen Gas-phase molecular absorption spectrometry
HJ/T 198-2005 Water quality -- Determination of nitrate-nitrogen Gas-phase molecular absorption spectrometry

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 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
GB 7480-1987 Water quality-Determination of nitrate-Spectrophotometric method with phenol disulfonic acid

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

GB 6912.1-1986 Determination of nitrate and nitrite - Nitrate UV photometric method
GB/T 6912.1-2006 Methods for analysis of water for boiler and for cooling determination of nitrates and nitrites - Part 1: Ultraviolet spectrophotometry for nitrates
GB/T 6912.1-1986 Methods for analysis of water for boiler and for cooling; The determination of nitrates and nitrites; Ultraviolet spectrophotometry for nitrates
GB/T 6912.2-1986 Methods for analysis of water for boiler and for cooling--The determination of nitrates and nitrites--Ultraviolet spectrophotometry for nitrites
GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
GB 6912.3-1986 Determination of nitrate and nitrite a-naphthylamine hydrochloride spectrophotometric method
GB/T 7480-1987 quality - Determination of nitrate - Spectrophotometric method with phenol disulfonic acid
GB 6912.2-1986 Determination of nitrate and nitrite - Nitrite UV photometric method
GB/T 6912.3-1986 Methods for analysis of water for boiler and for cooling; The determination of nitrates and nitrites; Alpha-naphthylamine hydrochloride photometric method

Professional Standard - Urban Construction

CJ 26.26-1991 Municipal sewage water quality inspection method standard Determination of nitrite nitrogen spectrophotometric method
CJ/T 76-1999 Municipal sewage.Determination of nitrogen(nitrite).Sepectrophotometric method

Hubei Provincial Standard of the People's Republic of China

DB42/T 2120-2023 Determination of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen in soil by gas phase molecular absorption spectrometry

Professional Standard - Ocean

HY/T 0346-2022 Determination of seawater trace nitrate—Flow analysis,cadmium reduction,diazotization and spectrophotometric detection with a long path length flow cell
HY/T 0345-2022 Determination of seawater trace nitrite—Flow analysis,diazotization and spectrophotometric detection witha long path length flow cell

Professional Standard - Petrochemical Industry

SH/T 1498.6-1997 Nylon 66 salt - Determination of content of nitrates - -Spectrophotometric method

Group Standards of the People's Republic of China

T/CHES 14-2017 Water Quality Determination of Nitrite Nitrogen Gas Phase Molecular Absorption Spectrometry
T/CHES 13-2017 Water Quality Determination of Nitrate Nitrogen Gas Phase Molecular Absorption Spectrometry

Professional Standard - Agriculture

NY/T 1279-2007 Determination of Nitrate in Vegetables and Fruits UV-spectrophotometer

YU-JUS

JUS H.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method

BE-NBN

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

Korean Agency for Technology and Standards (KATS)

KS H ISO 6740:2001 Dried whey－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6740:2006 Dried whey－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6739:2001 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6739:2006 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 8195:2006 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS I ISO 13395-2008(2018) Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS H ISO 8195:2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 4099:2006 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 4099:2001 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 6736:2001 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 6736:2006 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS I ISO 13395:2008 Water quality-Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

KR-KS

KS H ISO 6740-2001 Dried whey－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6739-2001 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 8195-2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6736-2001 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 4099-2001 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry

Indonesia Standards

SNI 19-6964.7-2003 Seawater quality - Part 7: Test methods of nitrates (NO3-N) with cadmium reduction by spectrophotometry

SCC

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 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen

TR-TSE

TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method

Association Francaise de Normalisation

NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF T20-253:1968 Chemical analysis of hydrochloric, nitric and sulphuric acids. Spectrophotometric determination of iron.
NF V04-351:1985 DRIED MILK. DETERMINATION OF NITRATE AND NITRITE CONTENTS. METHOD BY CADMIUM REDUCTION AND PHOTOMETRY.
NF V04-290:1985 Cheese. Determination of nitrate and nitrite contents. Method by cadmium reduction and photometry.

Danish Standards Foundation

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
DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen

International Organization for Standardization (ISO)

ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 6736:1982 Dried milk; Determination of nitrate and nitrite contents; Method by cadmium reduction and photometry
ISO 4099:1978 Cheese — Determination of nitrate and nitrite contents — Method by cadmium reduction and photometry
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
ISO 6739:1988 Whey cheese; determination of nitrate and nitrite contents; method by cadmium reduction and spectrometry
ISO 4099:1984 Cheese; Determination of nitrate and nitrite contents; Method by cadmium reduction and photometry

RU-GOST R

GOST EN 12014-3-2015 Foodstuffs. Determination of nitrate and/or nitrite content. Part 3. Spectrophotometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite

GSO

GSO ISO 6635:2015 Fruits, vegetables and derived products -- Determination of nitrite and nitrate content -- Molecular absorption spectrometric method
GSO ISO 14673-1:2014 Milk and milk products -- Determination of nitrate and nitrite contents -- Part 1: Method using cadmium reduction and spectrometry
GSO ISO 13395:2013 Water quality -- Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
OS GSO ISO 13395:2013 Water quality -- Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
GSO ISO 7890-3:2013 Water quality - Determination of nitrate - Part 3: Spectrometric method using sulfosalicylic acid

NL-NEN

NEN 6440-1981 Water - Photometric determination of nitrate content

South African Bureau of Standard

SANS 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

Lithuanian Standards Office

LST EN ISO 13395:2000 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996)

European Committee for Standardization (CEN)

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

British Standards Institution (BSI)

BS EN ISO 13395:1996(1998) Water quality — Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
BS 770-9:1985 Methods for chemical analysis of cheese. Determination of nitrate and nitrite contents. Cadmium reduction and photometry method

Spanish Association for Standardization (UNE)

UNE 34-850-1986 milk powder. Determination of nitrate and nitrite content. Calcium reduction method and photometric method

IN-BIS

IS 9967-1981 Cadmium reduction photometry method for determination of nitrate and nitrite content in cheese

NO-SN

NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen

RO-ASRO

STAS SR ISO 7408:1993 Fertilizers. Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method