Levels,sources and health risks of carbonyls and BTEX in the ambient air of Beijing,China

查看全文 作　　者：Yujie [1,2]Zhang;Yujing [1]Mu;Junfeng [1]Liu;Abdelwahid [2]Mellouki

机构地区：[1]Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;[2]Centre National de Recherche Scientifique-Institut de Combustion,Aerothermique,Reactivite et Environnement(CNRS-ICARE),45071 Orleans cedex 02,France

出　　处：《Journal of Environmental Sciences》索引2012年第24卷第1期,共7页

基　　金：supported by the National Natural Science Foundation of China (No. 41075094,40830101, 21177140,20977097);the National Basic Research and the Development Program (973) of China (No. 2010CB732304);the Special Fund for Environmental Research in the Public Interest (No. 201009001);the National Water Special Project (No. 2009ZX07210-009) 摘　　要：The atmospheric concentrations of carbonyls and BTEX (benzene,toluene,ethylbenzene,m,p-xylene and o-xylene) were measured simultaneously at a same sampling site in Beijing from September 2008 to August 2010.The average concentrations of the total measured carbonyls during autumn,winter,spring,and summer were 37.7,31.3,39.7,50.5 μg/m 3,respectively,and maximal values for their diurnal variations usually happened at noontime.In contrast to carbonyls,the average concentrations of the total measured BTEX during the four seasons were 27.2,31.9,23.2,19.1 μg/m 3,respectively,andminimal values for their diurnal variations always occurred in the early afternoon.The average concentration for carbonyls increased about 24% from September 2008-August 2009 to September 2009-August 2010,for BTEX,increased about 15%.Integrated life time cancer risks for three carcinogens (benzene,formaldehyde and acetaldehyde) in Beijing exceeded the value of 1E-06,and the hazard quotient (HQ) of non-cancer risk of exposure to formaldehyde exceeded unity. 关键词：羰基化合物健康风险苯系物北京环境空气平均浓度中国邻二甲苯

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Levels,sources and health risks of carbonyls and BTEX in the ambient air of Beijing,China

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