title: The risk assessment of heavy metals in Futian mangrove forest sediment in Shenzhen Bay (South China) based on SEM-AVS analysis.
abstract: The risks of heavy metal in Futian mangrove forest sediment were assessed using the acid-volatile sulfide (AVS) and simultaneously extracted metals (SEM) methods. The results indicated that AVS distributions were more variable than the SEM distributions at all 16 sampling sites. The positive correlation between AVS and SEM indicated that their similar formative and existing conditions and that AVS acted as an important carrier for SEM. The major SEM component was Zn (69.7.3-94.2%), whereas the Cd contribution (the most toxic metal present) to SEM was no more than 1%. The possible adverse effects caused by heavy metals at ten sampling sites may be due to higher levels of SEMs, rather than AVSs. The total organic carbon (TOC) was an important metal-binding phase in the sediments. Taking into account the TOC concentration, there were no adverse effects due to heavy metals in any of the Futian mangrove forest sediments.
authors.affiliation: Key Laboratory for Urban Habitat Environment Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.
authors.forename: Minwei
authors.initials: M
authors.lastname: Chai
authors.affiliation: Key Laboratory for Urban Habitat Environment Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.
authors.forename: Xiaoxue
authors.initials: X
authors.lastname: Shen
authors.affiliation: Key Laboratory for Urban Habitat Environment Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China. Electronic address: liruili@pkusz.edu.cn.
authors.forename: Ruili
authors.initials: R
authors.lastname: Li
authors.affiliation: Key Laboratory for Urban Habitat Environment Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China. Electronic address: qiugy@pkusz.edu.cn.
authors.forename: Guoyu
authors.initials: G
authors.lastname: Qiu
mesh_terms: D000143:Acids / Q000032:analysis; D061006:Bays; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D065928:Forests; D019015:Geologic Sediments / Q000032:analysis*; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D013440:Sulfides / Q000032:analysis*; D014835:Volatilization; D014874:Water Pollutants, Chemical / Q000032:analysis*; D053833:Wetlands
chemical_list: D000143:Acids; D019216:Metals, Heavy; D013440:Sulfides; D014874:Water Pollutants, Chemical
keywords: Acid-volatile sulfide; Heavy metal; Mangrove; Sediment; Simultaneously extracted metal