Nitrite nitrogen
Nitrite nitrogen, Total:14 items.
The international standard classification for "Nitrite nitrogen" includes: Water quality .
The Chinese standard classification for "Nitrite nitrogen" includes: Analysis methods for toxic substances in water .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
Professional Standard - Urban Construction
- 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 - Environmental Protection
- HJ/T 197-2005 Water quality -- Determination of nitrite-nitrogen Gas-phase molecular absorption spectrometry
- HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
中华人民共和国环境保护部
- GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-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/NAIA 0248-2023 Determination of nitrite nitrogen in water quality by continuous flow analysis method
Danish Standards Foundation
- DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen
- DS 230:1988 Water quality. Nitrate- + nitrite-nitrogen. Reduction by Devardas alloy
SCC
- NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
- NS 4865:1983 Air quality — Determination of the sum of nitrite- and nitrate-nitrogen in precipitation
NO-SN
- NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
BE-NBN
- NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method
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