摘要
2017年3月-5月采用大气挥发性有机物在线连续自动监测系统对徐州市新城区大气中102种VOCs进行观测,分析徐州市春季大气中VOCs的体积和组成特征。结果发现:观测期间,徐州市大气中VOCs的小时体积分数为(3.81~221.85)×10^(-9),平均体积分数为27.97×10^(-9);各物种体积占比依次为烷烃、含氧有机物、卤代烃、芳香烃和烯(炔)烃;占比最高的5种污染物是乙烷、丙酮、乙烯、乙炔和丙烷。徐州市臭氧处在VOCs控制区,对臭氧生成潜势(OFP)贡献率最大的是含氧有机物(33.99%)和芳香烃(32.21%);关键活性组分是乙烯、正己醛、甲苯、间/对-二甲苯和丁烯酮。
m The concentration,speciation of VOCs,volume and composition characteristics in Xuzhou were analyzed and measured using online gas detection systems from March to May in 2016. The results showed that？the averaged volume fraction of VOCs was 27.97×10-9 in Xuzhou urban district.The volume range form 3.81 × 10-9 to 221.85× 10-9. The order of volume fraction of each species VOCs was alkane 〉 oxygen-containing VOCs 〉 halohydrocarbon 〉 aromatics 〉 olefin and alkynes. The top Five pollutants are ethane, acetone, ethylene, acetylene, and propane. Ozone is in VOCs control area in Xuzhou urban district. In the case of ozone formation potential （ OFP）, oxygen-containing VOCs and aromatics account-ed for 33.99% and 32.21%, respectively. The key reactive species were ethylene, hexanal, toluene, xy-lene, vinylmethylketone.
出处
《环境研究与监测》
2017年第4期46-51,共6页
Environmental Research and Monitoring
关键词
挥发性有机物
体积分数
臭氧生成潜势
volatile organic compounds
volume fraction
ozone potential
