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Spatial distributions and deposition chronology of short chain chlorinated paraffins in marine sediments across the Chinese Bohai and Yellow Seas
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China; School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China; Environment Research Institute, Shandong University, Jinan, People’s Republic of China.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, People’s Republic of China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China.ORCID iD: 0000-0002-5729-1908
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2013 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 47, no 20, p. 11449-11456Article in journal (Refereed) Published
Abstract [en]

As the most complex halogenated contaminants, short chain chlorinated paraffins (SCCPs) are scarcely reported in marine environments. In this work, a total of 117 surficial sediment (0-3 cm) samples and two sediment cores were collected from the Chinese Bohai and Yellow Seas to systematically study the spatial and temporal trends of SCCPs at a large scale in the Chinese marine environment. Total SCCP concentrations in the surficial sediments were in the range of 14.5-85.2 ng g(-1) (dry weight, d.w.) with an average level of 38.4 ng g(-1) d.w. Spatial distribution showed a decreasing trend with the distance from the coast to the open waters. Compositional pattern analysis suggested that C10 was the most predominant homologue group, followed by C11, C12, and C13 homologue groups. The concentrations of total SCCPs in sediment cores ranged from 11.6 to 94.7 ng g(-1) d.w. for YS1 and from 14.7 to 195.6 ng g(-1) d.w. for YS2, with sharp rise from the early 1950s to present based on (210)Pb dating technique. The historical records in cores correspond well to the production and usage changes of CPs in China. Multivariate regression statistics indicate TOC, latitude and longitude are the major factors influencing surficial SCCP levels in the Chinese East Seas by combining analysis with the data from the East China Sea (R(2) = 0.332, p < 0.01). These findings indicated that the sources of SCCPs were mainly from river outflows via ocean current and partly from atmospheric depositions by East Asian monsoon in the sampling areas.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 47, no 20, p. 11449-11456
Keywords [en]
Carbon; China; Geography; Geologic Sediments; Hydrocarbons, Chlorinated; Oceans and Seas; Paraffin; Time Factors
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-38409DOI: 10.1021/es402950qISI: 000326123600012PubMedID: 24024649Scopus ID: 2-s2.0-84886936282OAI: oai:DiVA.org:oru-38409DiVA, id: diva2:765025
Note

Sponsors:

National Natural Science Foundation Grant no:s 21377001  21007078  21077114  21222702

Beijing NOVA Programme Grant no: Z131109000413049 

President Fund of UCAS Grant no: Y25101BY00 

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2018-05-22Bibliographically approved

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Wang, Thanh

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