大气PM_(10)中多环芳烃的污染特征  

STUDY ON THE POLLUTION CHARACTERISTICS OF POLYCYCLIC AROMATIC HYDROCARBONS IN ATMOSPHERIC PM_(10 ) IN HUAINAN CITY,CHINA

作　　者：郭清彬[1] 程学丰[1] 侯辉[1] 张先波[1] 

机构地区：[1]安徽理工大学地球与环境学院,淮南232001

出　　处：《环境化学》2010年第2期189-194,共6页Environmental Chemistry

基　　金：USAID资助项目(No.489-A-00-06-00014-00)

摘　　要：利用GC-MS对2008年5月至11月淮南市5个采样点大气可吸入颗粒物(PM10)样品进行分析,总结了研究区内PM10及其中16种PAHs的浓度特征、季节变化规律和来源解析.结果表明,不同采样点PM10浓度均偏高,超标率为14%—238%;PM10浓度水平为谢家集>田十五小>大通三小>淮化集团>理工校园.研究区内16种PAHs浓度总量的范围在15.20ng.m-3—111.58ng.m-3之间,平均浓度为64.36ng.m-3,4环以上的稠环芳烃占总浓度的86%.PAHs总量的季节变化与采样时环境温度显示出较好的负相关性,即秋季>春季>夏季.运用多环芳烃比值综合判断,淮南市大气PM10中PAHs主要以燃煤和机动车尾气混合来源为主,石油源和木材燃烧来源的贡献较小.Inhalable particulate samples were collected at five different sites in Huainan city from May to November, 2008. The samples were analyzed for PM10 and 16 PAHs using GC-MS. The concentration, seasonal change and source identification of PMI0 and sixteen PAHs were illustrated. Data showed the concentration of PM10was relating high. The samples exceeding the standards were 14%--238%. Spatial distribution of PM10was： Xiejiaji 〉 Tianshiwuxiao 〉 Datongsanxiao 〉 Huaihuajituan 〉 Ligongxiaoyuan. Concentrations of PAHs ranged from 15.20ng ·m-3--111.58ng · m-3, and the average value was 64. 36ng · m-3 Seasonal variation of PAHs displayed negative correlation with the surrounding temperature, i.e. , Autumn 〉 Spring 〉 Summer. Based on the PAH ratio, PAHs in PM10 came mainly from the combined sources of coal combustion and vehicle emission. The contribution of petroleum and wood was insignificant.

关 键 词：可吸入颗粒物(PM10) 多环芳烃(PAHs) 浓度特征. 

分 类 号：X51[环境科学与工程—环境工程]