HJ 1191-2021 Active Industry standards-Environmental protection

HJ 1191-2021 Water quality determination of azide by spectrophotometry

Publish Date: 2021-09-17 Implement Date: 2022-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: HJ 1191-2021

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection

ICS Name: Environmental protection, health, and safety (vocabulary)

Publish Date: 2021-09-17

Implement Date: 2022-04-01

Scope

This standard specifies a spectrophotometric method for determining nitrite in water. This standard is applicable to the determination of nitrite in surface water, groundwater, domestic sewage, and industrial wastewater. When the sampling volume is 150 ml, the sample preparation volume is 100 ml, and a 10 mm optical path cuvette is used, the method's detection limit is 0.08 mg/L (calculated as nitrite), and the determination limit is 0.32 mg/L (calculated as nitrite).