论文信息 - Development of Emergency Water Quality Standard for Typical Heavy Metals with Chinese Resident Ecotoxicity Data

Development of Emergency Water Quality Standard for Typical Heavy Metals with Chinese Resident Ecotoxicity Data

Environmental pollution emergency of heavy metals has posed serious ecological risks in China. However, local emergency water quality standards (WQSs) are not yet established. In the present study, local ecotoxicity data of six heavy metals, Cd2+, Cu2+, Pb2+, Zn2+, Hg2+ and Cr6+, were collected and screened. The suitability of four species sensitivity distribution (SSD) methods assumed to be used to derive the WQSs was evaluated by data analysis. Then, the methodology of emergency WQSs was established with the principles of SSD and ecological risk assessment, and the tiered emergency WQSs values of the six heavy metals were derived with the established methodology. Finally, a case analysis was demonstrated with the developed cadmium emergency WQSs and risk grade definition. The results may provide technical references for response to environmental pollution emergency.

Juan Zhang | Xin Zheng | Zhenguang Yan | Zhengtao Liu

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