Journal
ENVIRONMENTAL POLLUTION
Volume 167, Issue -, Pages 155-162Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.03.038
Keywords
Polycyclic aromatic hydrocarbons; Continental shelf sediment; Spatial distribution; Source diagnostics; Regional anthropogenic activity; China
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Funding
- Earmarked Fund of the State Key Laboratory of Organic Geochemistry [SKLOG2009A04]
- National Natural Science Foundation of China [41121063, 40588001]
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Sediments collected from the continental shelf of China, embracing Yellow Sea, inner shelf of the East China Sea (ECS), and the South China Sea (SCS), were analyzed for polycyclic aromatic hydrocarbons (PAHs). The concentrations of anthropogenic PAHs (Sigma(18)PAH) were 27-224 ng/g dry weight, with an average of 82 ng/g. Sedimentary PAHs in the continental shelf off China were mainly derived from mixed residues of biomass, coal, and petroleum combustion. Fluvial transport and atmospheric deposition mainly accounted for sediment PAHs in the ECS inner shelf and Yellow Sea (and the SCS), respectively. Furthermore, statistically higher levels of Sigma(18)PAH (28-224 ng/g; mean 110 ng/g) in the Yellow Sea sediment than in the SCS sediment (28-109 ng/g; mean 58 ng/g) were probably resulted from higher PAH emissions from coke industry and domestic coal combustion in North China than in South China. (C) 2012 Elsevier Ltd. All rights reserved.
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