title: Influence of early diagenesis on the vertical distribution of metal forms in sediments of Bohai Bay, China.
abstract: The influence of early diagenesis on the vertical distribution of metal forms in the sediments of Bohai Bay was discussed in this paper. The results showed that the concentrations were: Al > Fe ≈ Ca > Mn > Cr > Zn > Cu > Pb > Cd. In vertical distribution, the forms of Cr and Pb were stable from the top to the bottom. However, the exchangeable forms and acid-extracted forms of Cd, Cu and Zn presented an obvious declining trend. The metals would be transformed to more stable forms during the early-diagenesis process. Further analysis found that early diagenesis can change the sedimentary environment, affecting pH, oxidation-reduction potential (ORP), total dissolved solid (TDS) and the structure of organic matter (OM), all main factors influencing metal forms in the sediments of Bohai Bay.
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China. Electronic address: xueqianglu@gmail.com.
authors.forename: Xueqiang
authors.initials: X
authors.lastname: Lu
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Honglei
authors.initials: H
authors.lastname: Liu
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Meinan
authors.initials: M
authors.lastname: Xing
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Shao
authors.affiliation: Tianjin Institute of Radioactive Environment Management, Tianjin 300191, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhao
authors.affiliation: Tianjin Institute of Radioactive Environment Management, Tianjin 300191, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Li
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Qiongqiong
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Yu
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Xuezhu
authors.initials: X
authors.lastname: Yuan
authors.affiliation: Tianjin Academy of Environmental Sciences, Tianjin 300191, China.
authors.forename: Min
authors.initials: M
authors.lastname: Yuan
mesh_terms: D061006:Bays; D002681:China; D019015:Geologic Sediments / Q000032:analysis* / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis*; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Bohai Bay; Different forms; Early diagenesis; Metal pollution; Vertical distribution