Di Liu1,3, Yue Xu 1, Jun Li1, Chakra Chaemfa1, Chongguo Tian2, Xiang Liu1, Chunling Luo1, Gan Zhang1

  • 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
  • 2 Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation and Shangdong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
  • 3 Graduate University of the Chinese Academy of Sciences, Beijing 100039, China

Received: January 29, 2013
Revised: May 9, 2013
Accepted: May 9, 2013
Download Citation: ||https://doi.org/10.4209/aaqr.2013.01.0026  

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Cite this article:
Liu, D., Xu, Y., Li, J., Chaemfa, C., Tian, C., Liu, X., Luo, C. and Zhang, G. (2014). Organochlorinated Compounds in the Air at NAEO, an Eastern Background Site in China: Long-Range Atmospheric Transport versus Local Sources. Aerosol Air Qual. Res. 14: 1258-1268. https://doi.org/10.4209/aaqr.2013.01.0026



Gas and particle samples were collected by a high-volume sampler from July 2009 to March 2010 at an eastern regional background site in Ningbo and analyzed for polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The total (gas + particle) air concentrations of 11 OCPs ranged from 5.34 to 417 pg/m3, of which HCHs, DDTs, chlordane and HCB concentrations ranged from 0.67 to 214 pg/m3, 2.03 to 198 pg/m3, 2.25 to 158 pg/m3, and 0.38 to 77.1 pg/m3, respectively. The total concentrations of PCBs ranged from 42.4 to 224 pg/m3, with an average of 102 ± 53.6 pg/m3. Similar seasonal trends of HCH, DDT, chlordane, HCB concentrations were observed with the winter maximum. Diagnostic ratios indicate that aged technical HCH, DDT and chlordane were the major source of HCHs, DDTs and chlordane, respectively. PSCF analysis identified that northern China, southern China and Japan were major source regions of OCPs at Ningbo background site. As for PCBs, the seasonal trend was characterized with higher concentrations in summer. Those compounds were mainly influenced by the sources nearby and soil volatilization.

Keywords: PCBs; Fine aerosol; PSCF; OCPs; Ningbo

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