title: Bioavailability and toxicity of heavy metals in a heavily polluted river, in PRD, China.
abstract: The research is designed to explore the SEM-AVS concept as a tool to assess bioavailability and toxicity of heavy metals in heavily polluted river sediments. The value of AVS and SEM is in a high level and only a few benthic invertebrate are found. Abundance of benthic invertebrate has significant correlation with SEM/AVS (r= -0.913, p<0.01) and SEM-AVS (r= -0.725, p<0.05). The analytical results of MDS (Non-matric Multi-dimensional Scaling) analysis indicate the benthic community structures of seven among nine stations where the SigmaSEM(5)-AVS<0 are similar. The two facts indicate the SEM-AVS concept also is useful to heavily polluted river sediments.
authors: Key Laboratory of Environmental Pollution and Remediation Technology of Guangdong Province, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. lifeng2@mail2.sysu.edu.cn
authors: Feng
authors: F
authors: Li
authors: Y-M
authors: YM
authors: Wen
authors: P-T
authors: PT
authors: Zhu
mesh_terms: D000818:Animals; D002681:China; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis; D019015:Geologic Sediments / Q000032:analysis; D007448:Invertebrates / Q000254:growth & development; D019216:Metals, Heavy / Q000378:metabolism* / Q000633:toxicity*; D013440:Sulfides / Q000737:chemistry / Q000378:metabolism; D013696:Temperature; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000378:metabolism* / Q000633:toxicity*; D014877:Water Pollution, Chemical / Q000009:adverse effects* / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D013440:Sulfides; D014874:Water Pollutants, Chemical