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See Chinese contents: HJ 584-2010 HJ 584-2010: Ambient air. Determination of benzene and its analogies by activated charcoal adsorption carbon disulfide desorption and gas chromatography
This Standard specifies using the activated charcoal adsorption/carbon disulfide desorption-gas chromatography method for the determination of benzene and its analogies in the air. This Standard is applicable to the determination of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, cumene and styrene in ambient air and indoor air. This standard is also applicable to the determination of benzene and its analogies in low humidity exhaust gas at room temperature.
