G20峰会期间宜兴市大气VOCs特征及来源分析

发布时间：2018-02-28 19:47

  本文关键词： 长三角区域 杭州G峰会 挥发性有机物 二次有机气溶胶 PMF源解析 条件概率函数　出处：《环境科学》2017年07期 　论文类型：期刊论文

【摘要】：2016年G20杭州峰会期间,应用TH-300B挥发性有机物在线监测仪对江苏省宜兴市大气VOCs进行监测,烷烃、烯烃、芳香烃、乙炔、氯代烃、OVOC、乙腈体积混合比分别为11.00×10~(-9)、1.93×10~(-9)、5.78×10~(-9)、1.23×10~(-9)、4.16×10~(-9)、10.37×10~(-9)、0.27×10~(-9),应用臭氧最大生成潜势系数计算,烯烃和芳香烃为OFP贡献最大的活性组分,VOCs中臭氧前体物NMHCs主要来源为工业排放(42.2%)、机动车尾气(17.9%)、油气挥发(20.8%)、溶剂挥发(7.0%)、植物源贡献(12.1%),结合条件概率函数分析,其中的人为污染源与西北、东南方向的污染源分布有关,植物源与西南山地丘陵区域有关.在大气污染物排放严格管控期(2016-09-01~2016-09-06),主要源于一次排放的大气污染物浓度均有所下降,NMHCs中工业源占比下降至30.5%,植物源占比上升至16.8%.
[Abstract]:During the G20 summit in Hangzhou in 2016, the TH-300B volatile organic compounds online monitor was used to monitor atmospheric VOCs in Yixing City, Jiangsu Province, including alkanes, alkenes, aromatics, acetylene, alkanes, alkenes, alkenes, alkenes, The volume mixing ratios of chlorinated hydrocarbons and acetonitrile are 11.00 脳 10 ~ (10) ~ (-9) and 1.93 脳 10 ~ (10) ~ (-9) ~ 1.78 脳 10 ~ (10) ~ (10) ~ (-9) ~ 1.23 脳 10 ~ (10) C ~ (-9), respectively. The results are calculated by using the maximum ozone generation potential coefficient, which is 10.37 脳 10 ~ (-10) ~ (-9) ~ (-9) 脳 10 ~ (10) C ~ (-1). Olefins and aromatic hydrocarbons contribute most to OFP. The main sources of ozone precursor (NMHCs) in OFP are industrial emission of 42.2%, motor vehicle exhaust 17.9%, oil and gas volatilization 20.8%, solvent volatilization 7.0%, phytogenic contribution 12.1G, and conditional probability function analysis. The anthropogenic pollution sources are related to the distribution of pollution sources in the northwest and southeast. The plant source is related to the mountainous and hilly region of southwest China. In the period of strict control of atmospheric pollutant emission, the concentration of air pollutants mainly due to the primary discharge has decreased to 30.5% of NMHCs, and the proportion of plant source to 16.8%.
【作者单位】： 江苏省环境监测中心;宜兴市环境监测站;南京科略环境科技有限责任公司;
【基金】：国家科技支撑计划项目(2016YFC0201800) 江苏环保科研项目(2016001) 江苏省环境监测基金项目(1307)
【分类号】：X51
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本文编号：1548698