北京市奥林匹克公园PM2.5中多环芳烃在采暖季和非采暖季的特征、来源及健康风险评估  

Distribution,source and health risk assessment of polycyclic aromatic hydrocarbons （PAHs） in PM2.5 in Beijing Olympic Park in heating and non-heating seasons

作　　者：宋光卫 胡健[3] 崔猛 刘海红 陈鑫[7] 董鑫媛[2,4] 赵长秋 SONG Guang-wei;HU Jian;CUI Meng;LIU Hai-hong;CHEN Xin;DONG Xin yuan;ZHAO Chang-qiu(Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;University of Chinese Academy of Sciences,Beijing 100049,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences Beijing 100085,China;Institute of Geographic Sciences and Natural Resources Research,Beijing 100101,China;Tianjin Key Laboratory of Water Resources and Environment,Tianjin Normal University,Tianjin 300387,China;Urban and Environmental Science College,Tianjin Normal University,Tianjin 300387,China;Water Environment Monitoring Laboratory of Chinese Environment Monitoring Station,Beijing 100023,China)

机构地区：[1]中国科学院地球化学研究所,贵阳550081 [2]中国科学院大学,北京100049 [3]中国科学院生态与环境研究中心,北京100085 [4]中国科学院地理科学与资源研究所,北京100101 [5]天津师范大学地理与环境科学学院,天津300387 [6]天津师范大学天津市水资源与水环境重点实验室,天津300387 [7]中国环境监测总站水环境监测室,北京100023

出　　处：《生态学杂志》2019年第11期3400-3407,共8页Chinese Journal of Ecology

基　　金：国家自然科学基金重大研究计划项目(91644104);国家重点研发计划项目(2018YFC1800306)资助

摘　　要：采集了北京市奥林匹克公园2017年12月至2018年6月的67个PM2.5样品,对PM2.5中多环芳烃(PAHs)在采暖季和非采暖季的污染情况、浓度分布特征、来源和健康风险等进行研究。利用GC-MS对16种PAHs进行了检测分析。采暖季和非采暖季的PAHs均值分别为213.6和52.5 ng·m-3。利用比值法和主成分分析对PAHs进行源解析的结果显示,北京市城区采暖季16种PAHs主要来源于煤和石油等化石高温燃烧排放,非采暖季主要来源是机动车尾气排放;ILCR暴露风险评估模型评估表明,人群呼吸暴露在北京大气中具有潜在致癌风险。We collected 67 particulate matter( PM2.5) samples in the Beijing Olympic Park from December 2017 to June 2018 to examine the concentration,distribution characteristics and sources of polycyclic aromatic hydrocarbons( PAHs) in PM2.5,and assess the health risks during the heating season and non-heating season. The PAHs were detected by the GC-MS. The average values of the total concentrations of 16 PAHs associated in PM2.5 in the heating season and nonheating season were 213.6 and 52.5 ng·m-3,respectively. The molecular diagnostic ratios and principal component analysis were applied to apportion the sources of PAHs. The results showed that the sources of PAHs were mainly derived from the combustion of petroleum and coal during heating period,and from vehicular emissions during non-heating period. The health risk evaluation of PAHs was conducted by the model of incremental lifetime cancer risk( ILCR). There were potential carcinogenesis risks when exposed to PAHs associated in PM2.5.

关 键 词：多环芳烃 北京市奥林匹克公园 PM2.5 来源 风险评估 

分 类 号：TU8[建筑科学]