济南市PM_(2.5)中多环芳烃的季节变化特征及健康风险评价  

Seasonal variation and health-risk assessment of polycyclic aromatic hydrocarbons in PM_(2.5) in Jinan

作　　者：杨飞[1] 杨凌霄 孟川平[1] 朱艳红[2] 姚兰[1] 芦亚玲[1] 袁琦[1] 隋潇[1] 王文兴[1,3] 

机构地区：[1]山东大学环境研究院,济南250100 [2]山东大学环境科学与工程学院,济南250100 [3]中国环境科学研究院,北京100012

出　　处：《中国科学院大学学报（中英文）》2014年第3期389-396,共8页Journal of University of Chinese Academy of Sciences

基　　金：科技部环保公益性行业科研专项(201009001);山东省自主创新项目(2009TS024);山东省中青年科学家奖励基金(BS2010HZ010)资助

摘　　要：使用中流量颗粒物采样器采集济南市2011年春、夏、秋、冬季大气气溶胶中PM2.5样品，并利用气相色谱-质谱（GC—MS）对PM2.5样品中的16种多环芳烃（PAHs）进行分析，研究PM2.5中PAHs的季节变化特征和来源．结果显示，PM2.5中16种PAHs的全年总浓度变化范围为1．94～92．19ng·m-3，且浓度水平具有季节性变化特征，秋、冬季灰霾天PAHs浓度明显升高．诊断参数法和主成分分析法分析指出机动车尾气排放、煤燃烧和生物质燃烧是PM2.5中PAHs的主要污染源．4个季节灰霾天的BEQ平均值和CR平均值均高于清洁天，秋、冬季灰霾天BEQ平均值（5．32ng·m-3，8．65ng·m-3）和cR平均值（5．85×10-6，8．88×10-6）明显高于春、夏季灰霾天的BEQ值（3．31ng·m-3，2．63ng·m-3）和cR值（3．64×10-6，2．89×10-6），表明济南市秋、冬季灰霾污染的健康风险高．PM2.5 samples were collected during the four seasons of 2011 in Jinan using a sampler of medium-flow capacity, and 16 kinds of polycyclic aromatic hydrocarbons （PAHs） bounded to PM2.5 were analyzed by GC-MS to investigate their seasonal variations and sources. The results indicated that annual total PAHs concentration in PM25 ranged from 1.94 to 92.19 ng＇m-3, showing obvious seasonal variations, and it apparently increased during the haze periods in autumn and winter. Diagnostic ratio （DR） and principal component analysis （PCA） results suggested that the PAHs in PMz5 were mainly derived from vehicle emission, coal combustion, and biomass burning. The mean values of BEQ and CR observed during the haze periods were higher than those during the clean periods. During the haze periods in autumn and winter, the mean values of BEQ （5.32 ng. hi-3, 8.65 ng m-3） and CR（5.85 ×10-6, 8.88 ×10-6） were higher than the BEQ values （3.31 ng m-3, 3.64×10-6 ） and the CR values （2.63 ng m-3, 2.89 ×10-6） in spring and summer, respectively. BEQ and CR values indicated that haze pollution in autumn and winter would seriously impair human health in Jinan.

关 键 词：PM2 5 多环芳烃 灰霾 源解析 健康风险评价 

分 类 号：X51[环境科学与工程—环境工程]