Zhang Liangmao, Wei Caidi, Zhang Hui, Song Mingwei
Laboratory of Environmental Planning and Management of Huazhong Agricultural University, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China.
Smart City Research Institute, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
Chemosphere. 2017 Oct;184:569-574. doi: 10.1016/j.chemosphere.2017.06.035. Epub 2017 Jun 9.
The typical environmental endocrine disruptor nonylphenol is becoming an increasingly common pollutant in both fresh and salt water; it compromises the growth and development of many aquatic organisms. As yet, water quality criteria with respect to nonylphenol pollution have not been established in China. Here, the predicted "no effect concentration" of nonylphenol was derived from an analysis of species sensitivity distribution covering a range of species mainly native to China, as a means of quantifying the ecological risk of nonylphenol in surface fresh water. The resulting model, based on the log-logistic distribution, proved to be robust; the minimum sample sizes required for generating a stable estimate of HC were 12 for acute toxicity and 13 for chronic toxicity. The criteria maximum concentration and criteria continuous concentration were, respectively 18.49 μg L and 1.85 μg L. Among the 24 sites surveyed, two were associated with a high ecological risk (risk quotient >1) and 12 with a moderate ecological risk (risk quotient >0.1). The potentially affected fraction ranged from 0.008% to 24.600%. The analysis provides a theoretical basis for both short- and long-term risk assessments with respect to nonylphenol, and also a means to quantify the risk to aquatic ecosystems.
典型的环境内分泌干扰物壬基酚在淡水和咸水中正日益成为一种常见污染物；它会损害许多水生生物的生长和发育。目前，中国尚未制定关于壬基酚污染的水质标准。在此，壬基酚的预测“无效应浓度”是通过对一系列主要原产于中国的物种的物种敏感性分布进行分析得出的，以此作为量化地表淡水中壬基酚生态风险的一种手段。基于对数逻辑分布得出的模型证明是稳健的；生成稳定的危害浓度估计值所需的最小样本量，急性毒性为12个，慢性毒性为13个。标准最大浓度和标准连续浓度分别为18.49微克/升和1.85微克/升。在调查的24个地点中，有两个与高生态风险相关（风险商>1），12个与中等生态风险相关（风险商>0.1）。潜在受影响比例在0.008%至24.600%之间。该分析为壬基酚的短期和长期风险评估提供了理论依据，也为量化对水生生态系统的风险提供了一种方法。
