唐山市和北京市夏秋季节大气VOCs组成及浓度变化  

Concentration and Change of VOCs in Summer and Autumn in Tangshan

作　　者：孙杰[1,2] 王跃思[1] 吴方堃[1] 邱俊[2] 

机构地区：[1]中国科学院大气物理研究所,北京100029 [2]吉林化工学院化学与制药工程学院,吉林132022

出　　处：《环境科学》2010年第7期1438-1443,共6页Environmental Science

基　　金：国家重点基础研究发展规划(973)项目(2007CB407303);国家高技术研究发展计划(863)项目(2006AA06A301);中国科学院知识创新工程重大项目(KZCX1-YW-06-01)

摘　　要：2007年和2008年6～9月,利用前级浓缩-气相色谱/质谱法,对唐山市大气中挥发性有机物的组成及浓度变化进行了采样分析研究.2008唐山市大气VOCs平均浓度为163.5×10-9C(碳单位体积比,下同),其中饱和烷烃占45.9%、芳香烃占29.9%、烯烃占5.9%、卤代烃占18.8%;相对2007年同期唐山大气VOCs平均浓度340.4×10-9C下降了51.9%,苯系物下降幅度最大为66.5%,卤代烃中工业排放的二氯苯浓度有所上升;2008唐山市大气VOCs比同期北京大气VOCs浓度低8.5%,奥运时段VOCs变化表明,唐山市大气VOCs除交通源外工业排放也是大气污染的重要来源.In order to study the potential impact of volatile organic compounds （VOCs） in summer and autumn on region ozone,ambient concentrations and changes of VOCs were analyzed at Tangshan from June to September 2007 and 2008,by using the method of two-step-concentration-gas sepectrometry /mass （CCD-GC /MS）.The average concentration in Tangshan was 163.5 × 10-9 C.The major components were alkanes,aromatics,alkenes and halogen hydrocarbons which accounted for 45.9%,29.9%,5.9% and 18.9% respectively.The average concentration decreased 51.9% compare with 2007 （340.4 × 10-9 C）,confine gas stations is the main reason of the decline of alkyl,the large decline is aromatic hydrocarbons,67%,which has the most potential impact of ozone formation,and dichlorobenzene in industrial emissions has increased.The concentrations of VOCs in Tangshan were lower 8% than that of Beijing during the same period in 2008.The changes of VOCs during 2008 Beijing Olympic show that in addition to traffic source industrial emissions is also an important source of atmospheric pollution.

关 键 词：唐山市 预浓缩-GC-MS VOCS 组成 奥运会 

分 类 号：X511[环境科学与工程—环境工程]