title: Trace metals in the surface sediments of the intertidal Jiaozhou Bay, China: Sources and contamination assessment.
abstract: The major (Al) and trace metal (Cu, Pb, Zn, Cr, Cd, and As) concentrations in 29 surface sediment samples from the intertidal Jiaozhou Bay (JZB) are evaluated to assess the contamination level. The results show that the overall sediment quality in the area has been obviously impacted by trace metal contamination. The geoaccumulation index and the enrichment factor values indicate that no Cr or Cu contamination has occurred on the whole, only a few stations have been polluted by As, and some areas have been polluted by Cd, Pb, and Zn. Principal component analysis suggests that the Cu, Pb, Zn, and Cd are derived from anthropogenic inputs and that Cr, As, Cu, and Zn are influenced by natural weathering processes. Cu and Zn may originate from both natural and anthropogenic sources. The contamination in the northeastern JZB is higher than that in other areas of the bay.
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao 266580, China. Electronic address: xufangjiangg@163.com.
authors.forename: Fangjian
authors.initials: F
authors.lastname: Xu
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao 266580, China.
authors.forename: Longwei
authors.initials: L
authors.lastname: Qiu
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao 266580, China.
authors.forename: Yingchang
authors.initials: Y
authors.lastname: Cao
authors.affiliation: CNOOC Nanhai East Petroleum Bureau, Shenzhen 518067, China.
authors.forename: Jingli
authors.initials: J
authors.lastname: Huang
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao 266580, China.
authors.forename: Zhaoqing
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Geosciences, China University of Petroleum, Qingdao 266580, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Tian
authors.affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: Anchun
authors.initials: A
authors.lastname: Li
authors.affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
authors.forename: Xuebo
authors.initials: X
authors.lastname: Yin
mesh_terms: D061006:Bays / Q000737:chemistry*; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D008670:Metals / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical
keywords: Anthropogenic activity; Contamination; Jiaozhou Bay; Sediment; Trace metals