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Occurrence, sources and ecological risk assessment of polycyclic aromatic hydrocarbons in surface sediments from Xin'anjiang River-reservoir system
Received date: 2018-03-14
Online published: 2020-03-22
The gas chromatography coupled with a mass selective detector was used to separate and quantify the 16 polycyclic aromatic hydrocarbons (PAHs) in surface sediments from Xin'anjiang River-reservoir system in southeast China. Sixteen PAHs were detected in all sediment samples and the total concentrations of 16 PAHs ranged from 260 to 1 652 ng/g dw (dry weight) with an average of 973 ng/g dw. The high molecular weight PAHs were the dominant compounds. The highest concentration was found at Lanjiang River (1 530 ng/g dw), while the lowest was found at the central area of Xin'anjiang reservoir (600 ng/g dw). The diagnostic parameters showed that the wood and coal combustion might be the main source of PAHs. Based on the classification of existing research, the sediments from upstream of Xin'anjiang River, central area of Xin'anjiang reservoir and Fuchunjiang River were slightly polluted, but the sediments from the backwater region of Xin'anjiang reservoir and Lanjiang River were severely contaminated. As the result of the ecological risk assessment shows, there will be occasional adverse effect, but no frequent adverse effect.
Ye LIU, Yujie WANG, Fushun WANG, Xia LIANG, Xueping CHEN, Ming YANG, Jing MA . Occurrence, sources and ecological risk assessment of polycyclic aromatic hydrocarbons in surface sediments from Xin'anjiang River-reservoir system[J]. Journal of Shanghai University, 2020 , 26(1) : 113 -122 . DOI: 10.12066/j.issn.1007-2861.2017
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