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上海某石化园区周边区域VOCs污染特征及健康风险
摘要点击 183  全文点击 81  投稿时间:2018-03-27  修订日期:2018-05-10
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中文关键词  上海  石化园区  挥发性有机化合物(VOCs)  污染特征  健康风险
英文关键词  Shanghai  petrochemical park  volatile organic compounds (VOCs)  pollution characteristics  health risks
作者单位E-mail
盛涛 上海市环境监测中心, 国家环境保护上海淀山湖科学观测研究站, 上海 200235 shengtao0628@163.com 
陈筱佳 上海交通大学环境科学与工程学院, 上海 200240  
高松 上海市环境监测中心, 国家环境保护上海淀山湖科学观测研究站, 上海 200235 gs@semc.gov.cn 
刘启贞 上海市环境监测中心, 国家环境保护上海淀山湖科学观测研究站, 上海 200235  
李学峰 上海祥得环保科技有限公司, 上海 200235  
伏晴艳 上海市环境监测中心, 国家环境保护上海淀山湖科学观测研究站, 上海 200235  
中文摘要
      为了解石化周边区域大气VOCs污染特征,使用在线GC-FID监测仪于2017年10月对上海市某近石化周边居民区大气VOCs进行了为期1个月的连续观测;通过最大增量反应活性(MIR)法估算了VOCs对臭氧(O3)生成的贡献,并进行了健康风险研究.结果表明,观测期间VOCs总质量浓度的范围16.4~1947.8 μg·m-3,平均浓度为40.7 μg·m-3;烷烃、烯/炔烃和芳香烃的平均占比分别为66.2%、25.9%和7.9%.VOCs总浓度日变化特征呈现单峰型变化,峰值浓度为127.9 μg·m-3(07:00).VOCs总浓度的平均臭氧生成潜势(OFP)为249.7μg·m-3,烯、炔烃对OFP的贡献最高,达到153.4 μg·m-3;丙烯、反-2-丁烯、乙烯是关键的活性组分.己烷、苯、甲苯、乙苯、邻-二甲苯和间/对-二甲苯的健康风险较小.
英文摘要
      To investigate the pollution characteristics of volatile organic compounds (VOCs) in the vicinity of a petrochemical park, the composition and concentration of VOCs was successively monitored by application of a gas chromatography-flame ionization detector in the residential area surrounding a petrochemical park in Shanghai in October 2017. Moreover, the maximum incremental reactive method was employed to estimate the O3-formation potential contributed by VOCs, and health risks were assessed. Results showed that during the observation period, TVOCs concentrations ranged from 16.4 μg·m-3 to 1947.8 μg·m-3 with an average concentration of 40.7 μg·m-3, whereas the average proportions of alkanes, alkene/alkynes, and aromatic hydrocarbons were 66.2%, 25.9%, and 7.9%, respectively. The diurnal variation of total VOCs concentration showed a monomodal change, with a peak concentration of 127.9 μg·m-3 at 07:00, whereas the TVOCs had an average ozone formation potential (OFP) of 249.7 μg·m-3. Analysis of OFP indicated that trans-2-butene and ethylene were the most important species in ozone production with accountabilities for total OFP of 153.4 μg·m-3. Propylene, trans-2-butene, and ethylene were the key active species. Furthermore, health risk assessments revealed that no significant health risks had been caused by hexane, benzene, toluene, ethylbenzene, o-xylene, and m-xylene.

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