title: Distribution and source analysis of heavy metals in soils and sediments of Yueqing Bay basin, East China Sea.
abstract: Concentrations of heavy metals in coastal soils, stream sediments and intertidal sediments of Yueqing Bay basin were analyzed to study their distribution and trace the possible sources. According to various single- and multi-index methods, heavy metal enrichment, especially for Cu, Zn, Cr and Ni in stream sediments, should draw environmental concern. Controlling factors such as inorganic scavengers, organic matter, sample grain size and hydrodynamic conditions were identified to influence the transportation and distribution of metals within coastal soils and sediments. Principal component analysis indicated that most metals in soils and stream sediments originate primarily from natural and anthropogenic sources, respectively. Most metals in intertidal sediments, originating both from natural processes and human activities, tend to be concentrated in fine particles. The exchange of water and sediment between the bay and open waters is strong enough to keep the metals in the tidal flats from rising to very high levels.
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Yang
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China.
authors.forename: Pengbao
authors.initials: P
authors.lastname: Wu
authors.affiliation: Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
authors.forename: Aijing
authors.initials: A
authors.lastname: Yin
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Nanjing Center, China Geological Survey, Nanjing 210000, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China. Electronic address: chgao@nju.edu.cn.
authors.forename: Chao
authors.initials: C
authors.lastname: Gao
mesh_terms: D061006:Bays; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D012987:Soil; D014874:Water Pollutants, Chemical
keywords: Enrichment factor; Heavy metal; Principal component analysis; Receptor modeling; Yueqing Bay