Wang Siqi, Huo Zhuhao, Gu Jianzhong, Xu Gang
School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 P. R. China
Institute of Applied Radiation of Shanghai, Shanghai University Shanghai 200444 P. R. China.
RSC Adv. 2021 Sep 27;11(50):31766-31775. doi: 10.1039/d1ra05333g. eCollection 2021 Sep 21.
Farms and wastewater treatment plants (WWTPs) are important sources of endocrine disruptors, which may have potential adverse effects on the nearby receiving river and potential human health risks. Benzophenone (BPs) and synthetic progestin were determined in water and sediment samples of the discharge source and receiving river. BPs and synthetic progestin ranged from not detected (N.D.) to 400.53 ng L in water samples and from N.D. to 359.92 ng g dw in sediment, respectively, and benzophenone-3 (BP-3) and ethinyl estradiol (EE2) were the main detected objects. Correlation analysis showed that pollutants discharged from livestock farms were the main contributor to the receiving river. The distribution of pollutants in different regions was related to higher population density and livestock activities. Predicted no-effect concentrations (PNECs) were investigated for ecological risk assessment in the study area, and 86% of the samples exceeded the baseline value of chronic toxicity. Benzophenone-1 (BP-1), benzophenone-3 (BP-3), 4-hydroxybenzophenone (4-OH-BP) and benzophenone (BP) were identified as the main substances that caused medium risk in the aquatic ecosystem. Therefore, BPs and synthetic progesterone should be given more attention in the future.
农场和污水处理厂是内分泌干扰物的重要来源，可能会对附近的接纳河流产生潜在不利影响，并存在潜在的人类健康风险。对排放源和接纳河流的水样及沉积物样本中的二苯甲酮（BPs）和合成孕激素进行了测定。水样中的BPs和合成孕激素含量分别从未检出（N.D.）到400.53 ng/L，沉积物中的含量分别从未检出到359.92 ng/g干重，其中二苯甲酮-3（BP-3）和炔雌醇（EE2）是主要检测对象。相关性分析表明，畜牧场排放的污染物是接纳河流污染物的主要来源。不同区域污染物的分布与较高的人口密度和畜牧活动有关。研究区域对预测无效应浓度（PNECs）进行了生态风险评估，86%的样本超过了慢性毒性基线值。二苯甲酮-1（BP-1）、二苯甲酮-3（BP-3）、4-羟基二苯甲酮（4-OH-BP）和二苯甲酮（BP）被确定为在水生生态系统中造成中等风险的主要物质。因此，未来应更加关注BPs和合成孕激素。
