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Published on: August 18, 2023
Bioavailability and toxicity of heavy metals in a heavily polluted river, in PRD, China
1Key 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
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.
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