This Standard specifies water quality - determination of total nitrogen - alkaline potassium persulfate digestion UV spectrophotometric method. This Standard is applicable to the determination of total nitrogen in surface water, groundwater, industrial wastewater and domestic sewage. When the amount of sample is 10 ml, the detection limit of this method shall be 0.05 mg/L; the measuring range shall be 0.20 ~ 7.00 mg/L.
Basic Data
Standard ID
HJ 636-2012 (HJ636-2012)
Description (Translated English)
Water quality - Determination of total nitrogen - Alkaline potassium persulfate digestion UV spectrophotometric method
Sector / Industry
Environmental Protection Industry Standard
Classification of Chinese Standard
Z16
Classification of International Standard
13.060.01
Word Count Estimation
13,124
Older Standard (superseded by this standard)
GB 11894-1989
Quoted Standard
HJ/T 91; HJ/T 164
Regulation (derived from)
Department of Environmental Protection Notice No. 16 of 2012;
Issuing agency(ies)
Ministry of Ecology and Environment
Summary
This standard specifies the determination of total nitrogen alkaline potassium persulfate digestion spectrophotometry. This standard applies to surface water, groundwater, industrial wastewater and domestic sewage in the determination of total nitrogen.
