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Distribution of short chain chlorinated paraffins in marine sediments of the East China Sea: influencing factors, transport and implications
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; Department of Geography and Environment, Baoji University of Arts and Sciences, Shaanxi, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.ORCID iD: 0000-0002-5729-1908
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2012 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 46, no 18, p. 9898-9906Article in journal (Refereed) Published
Abstract [en]

Short chain chlorinated paraffins (SCCPs) are high production volume chemicals in China and found to be widely present in the environment. In this study, fifty-one surface sediments and two sediment cores were collected from the East China Sea to study their occurrence, distribution patterns and potential transport in the marginal sea. SCCPs were found in all surface sediments and ranged from 5.8 to 64.8 ng/g (dry weight, d.w.) with an average value of 25.9 ng/g d.w. A general decreasing trend with distance from the coast was observed, but the highest value was found in a distal mud area far away from the land. The C10 homologue was the most predominant carbon chain group, followed by C11, C12, and C13 homologue groups. Significant linear relationship was found between total organic carbon (TOC) and total SCCP concentrations (R(2) = 0.51, p < 0.05). Spatial distributions and correlation analysis indicated that TOC, riverine input, ocean current, and atmospheric deposition played an important role in controlling SCCP accumulation in marine sediments. Vertical profiles of sediment cores showed that SCCP concentrations decreased from surface to the depth of 36 cm, and then slightly increased again with depth, which showed a significant positive correlation with TOC and chlorine contents (Cl%). The results suggest that SCCPs are being regionally or globally distributed by long-range atmospheric or ocean current transport.

Place, publisher, year, edition, pages
2012. Vol. 46, no 18, p. 9898-9906
Keywords [en]
China; Environmental Monitoring; Geologic Sediments; Hydrocarbons, Chlorinated; Oceans and Seas; Paraffin; Water Pollutants, Chemical
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:liu:diva-193859DOI: 10.1021/es302463hISI: 000308787800011PubMedID: 22913607Scopus ID: 2-s2.0-84866396361OAI: oai:DiVA.org:liu-193859DiVA, id: diva2:1757346
Note

Sponsors:

National Natural Science Foundation  Grant no:s 21007078  21007062  20890111  20921063 

China Postdoctoral Science Foundation Grant no: 2012M510052 

President Fund of GUCAS Grant no: Y25101BY00 

Available from: 2023-05-16 Created: 2023-05-16 Last updated: 2023-05-29

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Wang, Thanh

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