HJ 501-2009: Water quality - Determination of total organic carbon - Combustion oxidation nondispersive infrared absorption method

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Scope

This Standard specifies the combustion oxidation nondispersive infrared
absorption method for the determination of total organic carbon (TOC) in
surface water, groundwater, domestic sewage and industrial wastewater.
This Standard is applicable to the determination of total organic carbon (TOC)
in surface water, groundwater, domestic sewage and industrial wastewater. The
detection-limit is 0.1 mg/L, and the lower limit of determination is 0.5 mg/L.
Note 1: The determination of TOC in this Standard is divided into differential
subtraction method (3.1) and direct method (3.2). When the content of
volatile organic compounds such as benzene, toluene, cyclohexane
and trichloromethane in water is high, it shall be determined by the
differential subtraction method; when the content of volatile organic
compounds in water is relatively low and the content of inorganic
carbon is relatively high, it shall be determined by the direct method.
Note 2: When there are elemental carbon particles (soot), carbides, cyanides,
cyanates and thiocyanates, they can be measured simultaneously with
organic carbon.
Note 3: When there are large particles of suspended solids in the water, due to
the limitation of the auto sampler pore size, the determination results
do not include all particulate organic carbon.

Basic Data

Standard ID	HJ 501-2009 (HJ501-2009)
Description (Translated English)	Water quality - Determination of total organic carbon - Combustion oxidation nondispersive infrared absorption method
Sector / Industry	Environmental Protection Industry Standard
Classification of Chinese Standard	Z16
Classification of International Standard	13.060
Word Count Estimation	9,928
Date of Issue	2009-10-20
Date of Implementation	2009-12-01
Older Standard (superseded by this standard)	GB/T 13193-1991; HJ/T 71-2001
Regulation (derived from)	Department of Environmental Protection Notice No. 54 of 2009
Issuing agency(ies)	Ministry of Ecology and Environment
Summary	This standard specifies the determination of surface water, groundwater, sewage and industrial effluent total organic carbon (TOC) of the combustion oxidation non-dispersive infrared absorption method. This standard applies to surface water, groundwater, sewage and industrial effluent total organic carbon (TOC) determination of the detection limit of 0. 1mg/L, detection limit of 0. 5mg/L.