Source Profiles and Environmental Impact of VOCs in Typical Industries in Xi'an
The source profile of VOCs in furniture manufacturing,surface coating,automobile manufactur-ing and printing industries in Xi'an were analyzed by Suma canister collecting-GC/MS.The contribution of VOCs from different processes to the generation of O3 and secondary organic aerosol(SOA)was calculated.The re-sults showed that TVOC mass concentration from different industries in Xi'an was from 0.332 mg/m3 to 45.7 mg/m3,with the highest in painting industry,followed by printing process and furniture manufacturing,and the lowest in automobile decoration and laminating process.VOCs from furniture manufacturing were main-ly aromatic hydrocarbons,oxygen-containing organic matter and alkane.With the substitution of oil-based paint for water-based paint,the proportion of aromatic hydrocarbons decreased and the proportion of oxygen-containing organic matter increased.VOCs from automobile spray were mainly aromatic hydrocarbons and oxygen-containing organic matter.The proportion of oxygen-containing organic matter in VOCs from printing industry was high.VOCs from surface coating contributed the most to the generation of O3 and SOA.ROF of VOCs from printing in-dustry was the smallest.RSOA of VOCs from automobile decoration process was the smallest.
万方数据
维普
