HJ 535-2009: Water Quality - Determination of Ammonia Nitrogen - Nessler Reagent Spectrophotometry

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Scope

This Standard specifies Nessler’s reagent spectrophotometry to determine the
ammonia nitrogen in water.
This Standard is applicable to determine the ammonia nitrogen in surface water,
underground water, domestic sewage, and industrial waste water.
When the volume of water sample is 50ml, and 20mm cuvette is used; the detection
limit for this method is 0.025mg/L, the lower determination limit is 0.10mg/L, and the
upper determination limit is 2.0mg/L (calculated as per N).

Basic Data

Standard ID	HJ 535-2009 (HJ535-2009)
Description (Translated English)	Water Quality - Determination of Ammonia Nitrogen - Nessler Reagent Spectrophotometry
Sector / Industry	Environmental Protection Industry Standard
Classification of Chinese Standard	Z16
Classification of International Standard	13.060
Word Count Estimation	9,936
Date of Issue	2009-12-31
Date of Implementation	2010-04-01
Older Standard (superseded by this standard)	GB 7479-1987
Regulation (derived from)	Department of Environmental Protection Notice No. 77 of 2009
Issuing agency(ies)	Ministry of Ecology and Environment
Summary	This standard specifies the determination of ammonia Nessler's reagent spectrophotometry. This standard applies to surface water, groundwater, sewage and industrial effluent ammonia determination. When the water injection volume was 50ml, using 20mm cuvette, the method detection limit of 0. 025mg/L, detection limit of 0. 10mg/L, measured a maximum of 2. 0mg/L (expressed in N dollars).