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题名: Simultaneous monitoring of PCB profiles in the urban air of Dalian, China with active and passive samplings
作者: Xu, Qian1;  Zhu, Xiuhua1;  Henkelmann, Bernhard2;  Schramm, Karl-Werner2;  Chen, Jiping3;  Ni, Yuwen3;  Wang, Wei1;  Pfister, Gerd2;  Mu, Jun1;  Qin, Songtao1;  Li, Yan4
关键词: air ;  polychlorinated biphenyls ;  gas-particulate partitioning ;  semipermeable membrance device ;  Dalian ;  China
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2013
DOI: 10.1016/S1001-0742(12)60030-8
卷: 25, 期:1, 页:133-143
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: The concentration of polychlorinated biphenyls (PCBs) in the urban air of Dalian, China was monitored from November 2009 to October 2010 with active high-volume sampler and semipermeable membrane device (SPMD) passive sampler. The concentration of PCBs (particle + gas) (Sigma PCBs) ranged from 18.6 to 91.0 pg/m(3), with an average of 50.9 pg/m(3), and the most abundant dioxin-like PCB (DL-PCBs) was PCB 118. The WHO-TEQ values of DL-PCBs were 3.6-22.1 fg/m(3), with an average of 8.5 fg/m(3), and PCB 126 was the maximum contributor to Sigma TEQ. There was a much larger amount of PCBs in the gas phase than in the particulate phase. The dominant PCB components were lower and middle molecular weight PCBs. With increasing chlorination level, the concentration of the PCB congeners in the air decreased. The gas-particulate partitioning of PCBs was different for the four seasons. The gas-particulate partitioning coefficients (logK(p)) vs. subcooled liquid vapor pressures (logP(L)(0)) of PCBs had reasonable correlations for different sampling sites and seasons. The absorption mechanism contributed more to the gas-particulate partitioning process than adsorption. Correlation analysis of meteorological parameters with the concentration of PCBs was conducted using SPSS packages. The ambient temperature and atmospheric pressure were important factors influencing the concentration of PCBs in the air. The distribution pattern of the congeners of PCBs and the dominant contributors to DL-PCBs and TEQ in active samples and SPMDs passive samples were similar. SPMD mainly sequestrated gas phase PCBs.
关键词[WOS]: POLYCHLORINATED BIPHENYL CONGENERS ;  SEMIPERMEABLE-MEMBRANE DEVICES ;  DIOXIN-LIKE PCB ;  DIBENZO-P-DIOXINS ;  ORGANIC-COMPOUNDS ;  GAS/PARTICLE CONCENTRATIONS ;  PARTITION-COEFFICIENT ;  GYEONGGI-DO ;  AMBIENT AIR ;  GAS
语种: 英语
WOS记录号: WOS:000314427700016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137897
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Jiaotong Univ, Sch Environm & Chem Engn, Dalian 116028, Peoples R China
2.German Res Ctr Environm Hlth, Helmholtz Zentrum Munchen, D-85764 Munich, Germany
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
4.Dalian Meteorol Observ, Dalian 116001, Peoples R China

Recommended Citation:
Xu, Qian,Zhu, Xiuhua,Henkelmann, Bernhard,et al. Simultaneous monitoring of PCB profiles in the urban air of Dalian, China with active and passive samplings[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(1):133-143.
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