Biological risk and pollution history of polycyclic aromatic hydrocarbons (PAHs) in Nansha mangrove, South China

MARINE POLLUTION BULLETIN

卷:85

Article

Wu, Qihang^1,2  Leung, Jonathan Y. S.²  Tam, Nora F. Y.²  Chen, Shejun³  Mai, Bixian³  Zhou, Xizhen⁴  Xia, Lihua⁴  Geng, Xinhua⁵ 

[1] Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China

[4] Guangzhou Univ, Sch Geog Sci, Guangzhou 510006, Guangdong, Peoples R China

[5] Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China

关键词: Biological risk;    Economic development;    Mangrove;    Pollution history;    Polycyclic aromatic hydrocarbons (PAHs);    Sediment;   

DOI  :  10.1016/j.marpolbul.2014.06.014

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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