HJ 667-2013
Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry (English Version)

Standard No.

HJ 667-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

Professional Standard - Environmental Protection

Latest

HJ 667-2013

Scope

This standard specifies the continuous flow-naphthylethylenediamine hydrochloride spectrophotometric method for 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 30 mm, the detection limit (in N) of this method is 0.04 mg/L, and the determination range is 0.16~10 mg/L.

HJ 667-2013 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 667-2013 history

• 2013 HJ 667-2013 Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry