HJ 646-2013 in English

Scope

This standard specifies a gas chromatography-mass spectrometry method for the determination of sixteen polycyclic aromatic hydrocarbons in ambient air and exhaust gases. This standard is applicable to the determination of sixteen polycyclic aromatic hydrocarbons (PAHs) in the gas phase and particulate matter in ambient air, stationary pollution source exhaust and unorganized emission air. Sixteen kinds of polycyclic aromatic hydrocarbons include naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, Benzo[a]pyrene, indeno[1,2,3-c,d]pyrene, dibenzo[a,h]anthracene, benzo[g,h,i]perylene. If verified, this standard is also applicable to the determination of other polycyclic aromatic hydrocarbons. When ambient air is collected at 100 L/min for 24 hours and measured using full scan method, the detection limit of the method is 0.000 4~0.000 9 μg/m, and the lower limit of determination is 0.001 6~0.003 6 μg/m; When the ambient air is collected at 225L/min for 24 hours, the full scan method is used for measurement. The detection limit of the method is 0.000 2~0.000 4 μg/m, and the lower limit of determination is 0.000 8~0.001 6 μ/m; when collecting fixed source exhaust gas At 1 m, the full scan method is used for measurement. The detection limit of the method is 0.05~0.12 μg/m, and the lower limit of determination is 0.20~0.48 μg/m. See Appendix A for details.