Abstract:
Ten special chemical manufacturing industries in an industrial area in Shanghai City were selected and from which organized exhaust gases were sampled using the Summa canisters. 106 VOCs compounds were analyzed by GC-MS (gas chromatography mass spectrometry) to study the VOCs emission characteristics. The MIR (maximum incremental reactive activity) method was used to estimate the contribution of the emission of VOCs from each company to ozone production. The results showed that OVOCs and aromatic hydrocarbons were the characteristic VOCs components in the special chemical manufacturing industry, with cumulative mass ratios ranging from 65.0% to 100.0%. Among 8 VOCs-emitting enterprises, OVOCs were the main components, accounting for 55.8% to 99.9% of the total mass. OVOCs such as isopropanol, tetrahydrofuran, acetone and ethyl acetate, and aromatic hydrocarbons like benzene and toluene were characteristic VOCs of the special chemical manufacturing industries. The absolute amount of OFP (ozone generation potential) of VOCs emitted from each special chemical manufacturing industry was quite different, and the range of OFP was 1.9-933.5 mg/m
3. OVOCs and aromatic hydrocarbons such as isopropyl alcohol, tetrahydrofuran, acetone, ethyl acetate, methyl isobutyl ketone, benzene and toluene were the main active components of the special chemical manufacturing industries. The cumulative contribution to OFP was between 80.1% and 100.0%. OVOCs and aromatic hydrocarbons should be focused on to control the pollution in the special chemical manufacturing industry.