摘要
利用大流量主动采样器，于2010年冬、夏两季对深圳市13个点位大气多氯联苯（polychlorinated biphenyls，PCBs）分别进行监测．结果显示，冬季采样期间，大气PCBs质量浓度为3．5～104．5pg／m^2，平均为29．3pg／m^2；类二恶英PCBs（dioxin-like PCBs，dl-PCBs）的质量浓度为0．2～2．6pg／m^2，平均为1．0pg／m^2．夏季采样期间，大气PCBs质量浓度为10．7—135．7pg／m^2，平均为44．6pg／m^2；二恶英类PCBs质量浓度为1．2～4．8pg／m^2，平均为2．2pg／m^2．深圳市大气PCBs组成以三氯代PCBs和四氯代PCBs为主，其对∑ρ（PCBs）的贡献率为73．6％-91．4％．深圳市大气PCBs主要来自PCBs产品在使用过程中的遗弃、泄露和排放，部分源自人类生产活动过程无意产生．国产PCBs产品、进口PCBs产品和废弃物焚烧对深圳市大气PCBs的贡献分别为50％、10％和14％．
Ambient air samples were collected for the analysis of polychlorinated biphenyls by using high-volume samplers in thirteen locations in Shenzhen during January and June 2010, respectively. The results indicated that, PCBs and dioxin-like PCBs concentration were in the range of 3.5-104. 5 pg/m3 （ average 29.3 pg/m3 ） and 0. 2-2.6 pg/m3 （ average 1.0 pg/m3 ） during the winter sampling season, respectively. During the summer sampling season, they were in the range of 10.7--135.7 pg/m3 （ average 44.6 pg/m3 ） and 1.2-4.8 pg/m3 （ average 2.2 pg/m3） , respectively. The PCBs were dominated by tri- and tetra-PCBs, which accounted for 73.6%-91.4% of the ∑ρ（PCBs）. The sources of PCBs were mainly from the local emissions of historical-used PCBs products, and some were unintentionally-produced PCBs from solid waste incineration and other thermal processes. Results indicate that Chinese PCBs product, imported PCBs product and solid waste incinerator contribute to 50%, 10% and 14% of the total PCBs released, respectively.
出处
《深圳大学学报（理工版）》
EI
CAS
北大核心
2014年第4期421-427,共7页
Journal of Shenzhen University(Science and Engineering)
基金
国家自然科学基金资助项目(41102217,11275130)
有机地球化学国家重点实验室开放基金资助项目(OGL-201207)
深圳市科技研发资金资助项目(JC201005280560A)~~
关键词
生态环境
大气气溶胶
多氯联苯
ecological enviroment
atmosphere aerosol
polychlorinated biphenyls
dioxin-like polychlorinated biphenyls
air monitoring
factor analysis-multiple linear regression （FA/MLR）
