HJ 665-2013
Water quality.Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry (English Version)
- Standard No.
- HJ 665-2013
- Language
- Chinese, Available in English version
- Release Date
- 2013
- Published By
- Professional Standard - Environmental Protection
- Latest
- HJ 665-2013
- Scope
- This standard specifies the continuous flow-salicylic acid spectrophotometric method for the determination of ammonia nitrogen in water. This standard is applicable to the determination of ammonia nitrogen in surface water, groundwater, domestic sewage and industrial wastewater. When the direct colorimetric module is used and the optical path of the detection cell is 30mm, the detection limit (in N) of this method is 0.01 mg/L, and the determination range is 0.04~1.00 mg/L; when the online distillation module is used, the detection cell When the optical path length is 10 mm, the detection limit (in N) of this method is 0.04 mg/L, and the determination range is 0.16~10.0 mg/L.
HJ 665-2013 Referenced Document
- HJ 536 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry
- HJ/T 164 Technical specifications for environmental monitoring of groundwater
- HJ/T 91 Technical Specifications Requirements for Monitoring of Surface Water and Waste Water
HJ 665-2013 history
- 2013 HJ 665-2013 Water quality.Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry
