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题名: Concentrations and gas-particle partitioning of PCDD/Fs in the urban air of Dalian, China
作者: Qin SongTao1;  Zhu XiuHua1;  Wang Wei1;  Chen JiPing2;  Ni YuWen2;  Li XiaoXiao3;  Mu Jun1;  Xu Qian1;  Schramm, Karl-Werner4
关键词: PCDD/Fs ;  urban air ;  gas-particle partitioning ;  Dalian
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2012-09-01
DOI: 10.1007/s11434-012-5320-y
卷: 57, 期:26, 页:3442-3451
收录类别: SCI
文章类型: Article
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: PCDD/Fs in the urban air of Dalian, China were monitored with high-volume active sampler from November 2009 to October 2010. The concentration of Cl4-8DD/Fs ranged from 3065 to 49538 fg m(-3), with an average of 10249 fg m(-3). The international toxic equivalents (I-TEQ) value of that was 61.8-1182 fg m(-3), with an average of 235 fg m(-3), which was comparable to those in the other urban locations around the world. It was found that the Cl4-8DD/Fs appeared to be present mainly in the particle phase during winter, spring and autumn, while during summer which were dominantly in gas phase. The ratio of Cl4-8DD/Fs present in particle phase increased with the increasing level of chlorination. The concentrations of PCDFs and PCDDs decreased with the increase of chlorinated level, while the concentrations of 2,3,7,8-PCDDs congeners increased with the increase of chlorination level. The homolog profiles of the concentrations of PCDFs presented were higher than those of the PCDDs, which indicated the PCDD/Fs pollution source of the air in Dalian was characteristic for thermal source pollution. The correlation analysis of meteorological parameters with the concentrations of Cl4-8CDD/Fs was conducted using SPSS packages, and it was found that the ambient temperature and atmospheric pressure were important factors influence the concentration of PCDD/Fs in the air. The respiratory risk and intake dioxins of the residents around the sampling sites were studied in the paper. It was found that Junge-Pankow model was much more accurate in predicting the gas-particle partitioning behavior of PCDD/Fs homologues during winter, while the Harner-Bidleman model shows better agreement with the measured data during winter and summer.
关键词[WOS]: DIBENZO-P-DIOXINS ;  YA-ER LAKE ;  ORGANIC-COMPOUNDS ;  ATMOSPHERIC PCDD/FS ;  AMBIENT AIR ;  EQUILIBRIUM ;  AREA ;  COEFFICIENT ;  TEMPERATURE ;  EMISSIONS
语种: 英语
WOS记录号: WOS:000308239400009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142913
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Dalian Meteorol Observ, Dalian 116001, Peoples R China
4.Mol EXpos MEX, Munich German Res Ctr Environm Hlth, Helmholtz Ctr, D-85764 Neuherberg, Germany

Recommended Citation:
Qin SongTao,Zhu XiuHua,Wang Wei,et al. Concentrations and gas-particle partitioning of PCDD/Fs in the urban air of Dalian, China[J]. CHINESE SCIENCE BULLETIN,2012,57(26):3442-3451.
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