title: Heavy metals in surface sediments along the Weihai coast, China: Distribution, sources and contamination assessment.
abstract: The Weihai coast is a representative zone with fifty-year history of mariculture in China. Algae and shellfish are the main cultured species, other species including fish and sea cucumber are also cultivated. In this study, heavy metals in surface sediments, sampled along the Weihai coast during May yearly between 2009 and 2013 were investigated in terms of their contents and spatiotemporal variation. The contents of Zn, Cr, Cu, Cd, Pb and As showed different spatiotemporal variations and ranged between 11.6 and 115.9, 4.15-51.3, 5.2-21.9, 0.02-0.33, 6.0-54.2, and 2.9-18.7μgg-1, respectively. Among them, Zn, Cu and As declined during the five years. Ecological risk assessment revealed that Cd posed a moderate risk, as compared to other five elements, which were relatively low risks in surface sediments. Source analysis revealed that Zn, Cr and Cd were mainly from lithogenic contribution, while As was likely from anthropogenic discharges.
authors.affiliation: Research Center for Marine Biology and Carbon Sequestration, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
authors.forename: Hongmei
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: Xuming
authors.initials: X
authors.lastname: Kang
authors.affiliation: Weihai Marine Environmental Monitoring Center, Weihai 264200, China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Li
authors.affiliation: Weihai Marine Environmental Monitoring Center, Weihai 264200, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: Jinming
authors.initials: J
authors.lastname: Song
authors.affiliation: Institute of Marine Microbes and Ecospheres, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361101, China.
authors.forename: Nianzhi
authors.initials: N
authors.lastname: Jiao
authors.affiliation: Research Center for Marine Biology and Carbon Sequestration, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China. Electronic address: zhangyy@qibebt.ac.cn.
authors.forename: Yongyu
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D002681:China; D004463:Ecology; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Ecological risk; Heavy metals; Mariculture; Surface sediments; Weihai coast