SL/T 273.1-2001 in English

Scope

This standard applies to trace amounts of nitrobenzene compounds (nitrobenzene, o-nitrotoluene, m-nitrotoluene, p-nitrotoluene, o-nitrochlorobenzene, m-nitrochlorobenzene) in surface water, groundwater and drinking water. , p-nitrochlorobenzene, 2,4-dinitrotoluene, 2,6-dinitrotoluene, 2,4-dinitrochlorobenzene) determination. This method uses a GDX-502 resin adsorption column to enrich trace amounts of nitrobenzene compounds in water, and then elutes them with benzene. After concentration and constant volume, it is measured using a gas chromatograph with an electron capture detector. The minimum detection concentration of this method (μg/L); nitrobenzene is 0.010; o-nitrotoluene, m-nitrotoluene, and p-nitrotoluene are 0.015 respectively; o-nitrochlorobenzene, m-nitrochlorobenzene, and p-nitrotoluene are 0.015. Nitrochlorobenzene is 0.002 respectively; 2,4-dinitrotoluene and 2,6-dinitrotoluene are 0.005 respectively; 2,4-dinitrochlorobenzene is 0.004.