锑的淡水水质基准及其对我国水质标准的启示

针对我国锑水生生物水质基准缺乏的问题,收集筛选了锑对淡水水生生物的急性和慢性毒性数据,使用评价因子法、毒性百分数排序法和物种敏感度分布法分别推导我国锑的淡水水质基准,通过综合分析和比较,选择物种敏感度分布法推导的急性和慢性的水质基准值（466.62μg/L和88.71μg/L）作为最终的基准推荐值.通过与国内外现有锑相关水质标准进行比较,提出在我国相关水质标准修订中分别制定保护水生生物和人体健康水质标准的建议,避免水质标准对水生生物的"过保护"问题.

Derivation of aquatic life water quality criteria for antimonyin freshwater and its implication for water quality standard in China

Aquatic life freshwater quality criteria of Sb for protecting aquatic lifewas absent to date in China. In this study, freshwater species and relative toxicity data of Sb were collected and screened. To derive aquatic life ambient freshwater quality criteria of Sb, assessment factor method, toxicity percentile rank method, and species sensitivity distribution(SSD) method were used in this study. Acute quality criteria and chronic quality criteria, which wererecommended as the freshwater quality criteria of Sb, were derived to be 466.62and 88.71μg/Lbased on SSD method. After comparison and analysis with existing relevant water quality standard in China and internationally, water quality standard of Sb in China was suggested to be revised as "water quality standard for the protection of freshwater aquatic organisms" and "water quality standard for the protection of human health" respectively to avoid "over-protection" of water quality standards for aquatic organisms.