Cause identification of ecotoxicity of chemical industrial wastewater—A case study

Abstract

Abstract: The cause identification of ecotoxicity of wastewater discharged from a chemical plant in Nanjing shows that the wastewater was acutely toxic to Daphnia magna .The effluent toxicity could be removed through C₁₈ solid-phase extraction, and the primary toxicants in effluent were nonpolar organic chemical compounds.By C₁₈ solid-phase extraction, it was found that the major doubtful toxicants in effluent were benzopyrone and phenol, which were the key toxicants resulting in effluent toxicity, with a contribution of 44.6% and 32.9%, respectively.

Key words: Toxicity identification evaluation, Chemical industrial wastewater, Benzopyrone, Phenol, microplate fluorimetric assay, soil quality, redundancy analysis, soil enzyme activity

Yang Xuan, Jin Hongjun, Yin Daqiang, Yu Hongxia, Cheng Huimin, Lou Xiao, Xue Guangpu. Cause identification of ecotoxicity of chemical industrial wastewater—A case study[J]. Chinese Journal of Applied Ecology, 1998, 9(5): 525-528.

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