State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China.
Int J Environ Res Public Health. 2022 May 17;19(10):6067. doi: 10.3390/ijerph19106067.
Silver is toxic to freshwater aquatic organisms and aquatic ecosystems, and it is necessary to develop regional water quality criteria (WQC) for silver to protect the freshwater aquatic organisms in China. The toxicity database of silver for freshwater aquatic organisms involved 121 acute toxicity values for 35 species (6 phyla and 27 families) and 15 chronic toxicity values for 4 species (2 phyla and 4 families). Teleost fish showed the most sensitivity to silver after both short-term and long-term exposure. Significant correlations between the natural logarithms of hardness and the natural logarithms of acute silver toxicity were found for , , and . The criterion maximum concentration (CMC) was calculated by the species sensitivity distribution method with sigmoid as the best fitting model (Adj 0.9797), and the criterion continuous concentration (CCC) was obtained by the acute-to-chronic ratio method. The CMC and CCC of silver were e1.58ln(HCaCO3)-8.68, and e1.58ln(HCaCO3)-10.28 respectively, in China, with water hardness (HCaCO3, mg/L) as an independent variable. This research can provide a basis and reference for the management of silver to protect freshwater aquatic organisms in China.
银对淡水水生生物和水生生态系统有毒，有必要制定中国的区域水质标准（WQC）来保护中国的淡水水生生物。涉及的银对淡水水生生物的毒性数据库包括 35 种（6 门和 27 科）的 121 个急性毒性值和 4 种（2 门和 4 科）的 15 个慢性毒性值。在短期和长期暴露后，硬骨鱼对银的敏感性最高。发现硬度的自然对数与急性银毒性的自然对数之间存在显著相关性。使用最佳拟合模型（Adj 0.9797）为 S 形的物种敏感性分布方法计算了标准最大浓度（CMC），并通过急性到慢性比方法获得了标准连续浓度（CCC）。在中国，银的 CMC 和 CCC 分别为 e1.58ln（HCaCO3）-8.68 和 e1.58ln（HCaCO3）-10.28，其中 HCaCO3（mg/L）为自变量。这项研究可以为中国管理银以保护淡水水生生物提供依据和参考。
