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

作     者：Yujie Zhang Yujing Mu Junfeng Liu Abdelwahid Mellouki 

作者机构：Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Centre National de Recherche Scientifique-Institut de CombustionAerothermiqueReactivite et Environnement(CNRS-ICARE)45071 Orleans cedex 02France 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2012年第24卷第1期

页      面：124-130页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 0713[理学-生态学] 

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) 

主　　题：carbonyls BTEX sources exposure and risk assessment Beijing 

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 *** 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 *** 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 *** 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.