HJ 621-2011 (English Version) PDF

Scope: Warning: The standard samples of chlorobenzene compounds, carbon disulfide, concentrated sulfuric acid, etc. used in this method are harmful to human health. During operation, protective equipment should be worn as required to avoid contact with skin and clothing. This standard specifies a gas chromatographic method for the determination of chlorobenzenes in water. This standard is applicable to the determination of chlorobenzene compounds in surface water, groundwater, drinking water, seawater, industrial wastewater and domestic sewage. Specific components include: chlorobenzene, 1,4-dichlorobenzene, 1.3-dichlorobenzene, 1,2-dichlorobenzene, 1,3,5-trichlorobenzene, 1,2,4-trichlorobenzene, 1,2,3-trichlorobenzene, 1,2,4,5-tetrachlorobenzene, 1,2,3,5-tetrachlorobenzene, 1,2,3,4-tetrachlorobenzene, chlorine-free benzene and 12 types of hexachlorobenzene. When the water sample is 1L and the volume is adjusted to 1.0ml, the method detection limit and lower determination limit are shown in Table 1. Table 1 is omitted.

HJ 621-2011 history

2011 HJ 621-2011 Water quality.Determination of chlorobenzenes.Gas chromatography