Abstract:Species sensitivity distributions (SSD) method was used to assess the ecological risk of six heavy metals (Cd, Cu, Hg, Pb, Zn and Mn) to freshwater organisms. The acute toxicity data (LC50 or EC50) were collected from ECOTOX database and SSD curves were fitted based on BurrIII function. The acute ecological risks of the heavy metals and the sensitivity of different freshwater species (vertebrate and invertebrate) to these heavy metals were compared by the hazardous concentrations for 5% of the species (HC5) and the potential affected fractions (PAF). The the HC5 values of the six heavy metals were in the order: Cu
孔祥臻, 何伟, 秦宁, 何玘霜, 王雁, 欧阳慧灵, 徐福留. 重金属对淡水生物生态风险的物种敏感性分布评估[J]. 中国环境科学, 2011, 31(9): 1555-1562.
KONG Xiang-Zhen, HE Wei, QIN Ning, HE Qi-Shuang, WANG Yan, 欧Yang-Hui-Ling , XU Fu-Liu. Assessing acute ecological risks of heavy metals to freshwater organisms by species sensitivity distributions. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(9): 1555-1562.