Comparative study of polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) in corals, surrounding sediments and surface water at the Dazhou Island, China

doi:10.1016/j.chemosphere.2018.11.063

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/32633

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/32633

Title:	Comparative study of polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) in corals, surrounding sediments and surface water at the Dazhou Island, China
Authors:	Yang, Tinghan Cheng, Huamin Wang, Haihua Drews, Marco Li, Sennan Huang, Wei Zhou, Hailong Chien-Min Chen(陳建民) Diao, Xiaoping
Contributors:	Hainan Univ, State Key Lab Marine Resource Utilizat South Chin Hainan Univ, Inst Trop Agr & Forestry Xiamen Univ Leibniz Ctr Marine Trop Res Chia Nan Univ Sci & Pharm, Dept Environm Resources & Management
Keywords:	Polycyclic aromatic hydrocarbons Heavy metals Coral reefs Pollution source Bioaccumulation
Date:	2019-03
Issue Date:	2020-07-29 13:53:01 (UTC+8)
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Abstract:	This study investigated polycyclic aromatic hydrocarbons (PAHs) content in corals (Acropora sp.), surficial sediments, and surface seawater, and heavy metals (HMs) contents in corals and sediments from Dazhou Island, Hainan, China. Concentrations of PAHs in seawater and sediment seasonally ranged from 191.5 ng L(-1 )to 587.7 ng L-1, and from 37.9 ng g(-1) to 233 ng g(-1), while levels in corals were higher (185.2 -545.0 ng g -1 ) compared to those found in sediments, demonstrating bioaccumulation of PAHs by corals. A similar seasonally variation of PAHs was observed in water/sediments and corals, and the proportions of low molecular weight PAHs (LPAHs) in seawater and corals were higher. Pyrolytic and petrogenic contaminations were identified to be the main sources of PAHs. Lower HMs concentrations were detected in corals (9.8-39.4 mu g g(-1)) than in sediments (65.0-83.3 mu g g(-1)), but HMs bioaccumulation still occurs in corals. Higher concentrations of HMs in sediment and corals were detected in March and December, especially Mn and Zn. Application of an enrichment factor showed that Cu in corals was delivered from non-crustal materials, and anthropogenic inputs were possibly the main sources. According to Biota Sediment Accumulation Factor, corals could strongly bioaccumulate LPAHs and Cd, and PAHs at a higher (p < 0.05) rate than HMs. There was a lack of correlation between the accumulation of PAHs and HMs in corals based on the cluster analysis. Dual hierarchical clustering analysis result revealed that feeding, instead of symbiosis, might be the main process responsible for the bioaccumulation of PAHs and HMs. (C) 2018 Elsevier Ltd. All rights reserved.
Relation:	Chemosphere, v.218, pp.157-168
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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