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HJ 197-2024Water quality - Determination of nitrite nitrogen - Gas-phase molecular absorption spectrometry (English PDF)

水质亚硝酸盐氮的测定气相分子吸收光谱法

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Issued by

Ministry of Ecology and Environment

Level / Type

National · Mandatory

Issue date

December 25, 2024

Implementation date

July 1, 2025

Scope

HJ 197-2024 is the English-translated version of 水质亚硝酸盐氮的测定气相分子吸收光谱法.

HJ 197-2024 — This standard specifies the gas phase molecular absorption spectrometry method for the determination of nitrite nitrogen in water. This standard is applicable to the determination of nitrite nitrogen (in terms of N) in surface water, groundwater, domestic sewage, industrial wastewater and seawater.

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Document preview — HJ 197-2024

National Standard of the People's Republic of China

Classification: Z 16

Issued by: Ministry of Ecology and Environment

What this standard covers1
Document data2

What this standard covers

This standard specifies the gas phase molecular absorption spectrometry method for the determination of nitrite nitrogen in water. This standard is applicable to the determination of nitrite nitrogen (in terms of N) in surface water, groundwater, domestic sewage, industrial wastewater and seawater. The detection limit of the method is 0.003 mg/L and the lower limit of determination is 0.012 mg/L.

Document data

Chinese classification (CCS): Z16.

Estimated length of the Chinese original: 9,968 words.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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