HJ 536-2009
Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry (English Version)

Standard No.

HJ 536-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Environmental Protection

Latest

HJ 536-2009

Replace

GB/T 7481-1987

Scope

This standard specifies the salicylic acid spectrophotometric method for the determination of ammonia nitrogen in water. This standard is applicable to the determination of ammonia nitrogen in groundwater, surface water, domestic sewage and industrial wastewater. When the sampling volume is 8.0ml and a 10mm cuvette is used, the detection limit is 0.01mg/L, the lower determination limit is 0.04mg/L, and the upper determination limit is 1.0mg/L (all in N). When the sampling volume is 8.0ml and a 30mm cuvette is used, the detection limit is 0.004mg/L, the lower determination limit is 0.016mg/L, and the upper determination limit is 0.25mg/L (all in N).

HJ 536-2009 history

• 2009 HJ 536-2009 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry

HJ 536-2009 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry has been changed from GB/T 7481-1987 Water quality--Determination of ammonium--Spectrophotometric method with salicylic acid.