Abstract:We obtained the species information of vehicle exhaust of Tianjin and the concentration data of each species through the tunnel experiment. Among the 88kinds of VOCs we have monitored, there are 23 kinds of VOCs have potential to generate SOA. We estimated secondary organic aerosols (SOA) generation potential with fractional aerosol coefficients (FAC) based on the monitored data of volatile organic compounds (VOCs) in the vehicles exhaust of Tianjin. The results show that o-xylene, toluene, benzene, m-xylene, p-xylene and p-diethylbenzene have the largest production accounted for 13.8%, 10.22%, 9.74%, 8.39%, 8.10%, 7.64% of total SOA, respectively. In among of the vehicles exhaust, aromatics are considered to be the biggest contributors to the SOA, accounting for 88.95% of the total SOA. Therefore, the key to reduce the quantity of SOA is to control the emissions of aromatic hydrocarbons.
于艳, 王秀艳, 杨文. 天津市机动车二次有机气溶胶生成潜势的估算[J]. 中国环境科学, 2015, 35(2): 381-386.
YU Yan, WANG Xiu-Yan, YANG Wen. Estimate of vehicles generation of secondary organic aerosols of Tianjin. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(2): 381-386.