室内空气PM_(10)中PAHs对老年人的致癌风险评价——以天津市某社区为例  

The cancer risk assessment of the elderly population exposure to PAHs in PM_(10) indoor air——Case study of one community in Tianjin, China

作　　者：曹文文[1] 张振江[1] 赵若杰[1] 韩斌[2] 张楠[1] 白志鹏[2] 

机构地区：[1]南开大学国家环境保护城市空气颗粒物污染防治重点实验室,天津300071 [2]中国环境科学研究院,北京100012

出　　处：《中国环境科学》2013年第2期345-350,共6页China Environmental Science

基　　金：2006-2007年度环保公益性行业科研专项(200709048)

摘　　要：选取天津市37户家庭,分别在2009年(8、9月)非采暖期和2009年(11、12月)采暖期采集室内PM10并对PM10载带的18种多环芳烃(PAHs)的含量进行测定,分析其浓度特征.结果表明,采暖季的总PAHs的浓度高于非采暖季总PAHs的浓度,采暖季和非采暖季室内PM10载带的多环芳烃以4环和5环为主,占PAHs总含量的60%以上,18种多环芳烃的平均浓度为190ng/m3,其中BaP的浓度为12ng/m3,超过了国家标准(1ng/m3),根据特征比值法初步判断室内PAHs的来源为烹调,吸烟,燃煤,交通,PAHs的毒性等效因子浓度(c-BaPeq)为22.65ng/m3,根据多环芳烃增量终身致癌风险估算,预计天津市老年人潜在致癌风险为5×10-6,超过了可接受水平.PM10 were collected in the indoor air of 37 resident homes in Tianjin during the heating and non-heating season, 18 kinds of polycyclic aromatic hydrocarbons （PAHs） which were contended in PM10 were analyzed.The concentration of PAHs in heating-season is higher than the concentration of PAHs in non - heating season, The average concentration of the PAHs was 190ng/m3, and the dominant components were 4 or 5 PAHs ring, which accounted for more than 60% of the PAlls, The average daily concentrations of BaP is 12ng/m3, which exceed the national standard （lng/m3）.PAHs ratios judged that PAHs contended in PM10 were mainly came from cooking, smoking, coal combustion,transportation. The concentration of PAHs toxic equivalent factors （c-BaPeq） is 22.65ng/m3,The elderly exposure to PAHs in Tianjin area was estimated based on the incrementa lifetime cancer risks of polycyclic aromatic hydrocarbons,it was calculated that the cancer risk is 5x10-6, The potential cancer risks of PAHs pollution in Tianjin is above the acceptable risk level.

关 键 词：多环芳烃 室内空气 来源分析 致癌风险评价 

分 类 号：X18[环境科学与工程—环境科学]