期刊
MARINE POLLUTION BULLETIN
卷 85, 期 1, 页码 92-98出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.06.014
关键词
Biological risk; Economic development; Mangrove; Pollution history; Polycyclic aromatic hydrocarbons (PAHs); Sediment
资金
- Guangzhou Science and Technology Project [11C72010683]
- National Natural Science Foundation of China [41121063, 41203058, 41101456]
Chinese government has taken various measures to alleviate pollution caused by polycyclic aromatic hydrocarbons (PAHs) in the region of Pearl River Delta since the economic reform in 1978, but the effectiveness of these measures remains largely unknown. This study aimed to elucidate the biological risk and pollution history of PAHs by measuring the concentrations of 28 PAHs in the surface and core sediments, respectively, in Nansha mangrove. Results found that the biological risk of PAHs was low without obvious spatial variation. The PAH concentration along the depth gradient indicated that PAH pollution was stabilized since the early 1990s while the source of PAHs has gradually changed from combustion of coal to petroleum products. This implied that the mitigation measures taken by the Chinese government were effective. Compared to marine bottom sediment, we propose that using mangrove sediment can provide a more accurate and precise estimate of pollution history of PAHs. (C) 2014 Elsevier Ltd. All rights reserved.
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