HJ 604-2017 (English Version) PDF

Scope: This standard specifies a direct injection-gas chromatography method for the determination of total hydrocarbons, methane and non-methane total hydrocarbons in ambient air. This standard is applicable to the determination of total hydrocarbons, methane and total non-methane hydrocarbons in ambient air, and also to the determination of total hydrocarbons, methane and total non-methane hydrocarbons in the air at unorganized emission monitoring points of pollution sources. When the injection volume is 1.0 ml, the detection limit of this standard for total hydrocarbons and methane is 0.06 mg/m (calculated as methane), and the lower limit of determination is 0.24 mg/m (calculated as methane); non-methane total hydrocarbons The detection limit is 0.07 mg/m (calculated as carbon), and the lower limit of determination is 0.28 mg/m (calculated as carbon).

HJ 604-2017 Referenced Document

HJ 194 Technical specification for manual monitoring of ambient air quality "Revision No. 1"*， 2018-08-13 Update
HJ 664 Technical regulation for selection of ambient air quality monitoring stations (on trial)
HJ 732 Emission from stationary sources.Sampling of volatile organic compounds.Bags method
HJ/T 55 Technical guidelines for fugitive emission monitoring of air pollutants

2017 HJ 604-2017 Ambient air.Determination of total hydrocarbons, methane and nonmethane hydrocarbons.Direct injection/gas chromatography
2011 HJ 604-2011 Ambient air.Determination of total hydrocarbons.Gas chromatographic method