HJ 668-2013
Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry (English Version)
- Standard No.
- HJ 668-2013
- Language
- Chinese, Available in English version
- Release Date
- 2013
- Published By
- Professional Standard - Environmental Protection
- Status
- Latest
- HJ 668-2013
- Replace By
- KS R 3029-2014
- Scope
- This standard specifies the flow injection-naphthylethylenediamine hydrochloride spectrophotometric method for the determination of total nitrogen in water. This standard applies to the determination of total nitrogen in surface water, groundwater, domestic sewage and industrial wastewater. When the detection light path is 10 mm, the detection limit (in N) of this method is 0.03 mg/L, and the determination range is 0.12~10 mg/L.
HJ 668-2013 Referenced Document
- 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 668-2013 history
- 2013 HJ 668-2013 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 668-2013 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry was changed to KS R 3029-2014 Air cleaner element for engines.
