宁夏入黄排水沟中典型内分泌干扰物的污染特征与风险评价  

Pollution Characteristics and Risk Assessment of Typical Endocrine Disrupting Chemicals in Drains Flowing into the Yellow River of Ningxia

作　　者：李凌云 高礼[1,2] 郑兰香 李富娟 陶红 马兰[4] LI Ling-yun;GAO Li;ZHENG Lan-xiang;LI Fu-juan;TAO Hong;MA Lan(School of Geography and Planning,Ningxia University,Yinchuan 750021,China;China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region,Yinchuan 750021,China;School of Ecology Environment,Ningxia University,Yinchuan 750021,China;Analysis and Testing Center,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学地理科学与规划学院,银川750021 [2]教育部中阿旱区特色资源与环境治理国际合作联合实验室,银川750021 [3]宁夏大学生态环境学院,银川750021 [4]宁夏大学测试分析中心,银川750021

出　　处：《环境科学》2023年第5期2539-2550,共12页Environmental Science

基　　金：国家自然科学基金项目(21607087);宁夏回族自治区重点研发项目(2019BFG02032,2020BEB04008);宁夏自然科学基金项目(2021AAC05004);宁夏大学2022年研究生创新项目(CXXM202232)。

摘　　要：利用固相萃取-超高效液相色谱质谱联用仪检测分析了9种典型内分泌干扰物(EDCs)在宁夏入黄排水沟中的污染水平,探讨了其空间分布特征,分析了其来源,并进行了风险评价.结果表明,宁夏入黄排水沟中33个采样点均有EDCs检出,各采样点∑EDCs浓度范围在82.28~1730.09 ng·L^(-1)之间.其中,检出浓度最高的两种化合物是E2和OP,浓度最大值分别为1367.41 ng·L^(-1)和787.80 ng·L^(-1).酚类化合物中双酚A(BPA)和壬基酚(NP)的检出率均达到90%以上,雌激素类化合物中雌酮(E1)和雌三醇(E3)的检出率较高,均为79%.空间分布上,排水沟中∑EDCs浓度平均值呈现出石嘴山市和银川市远高于吴忠市和中卫市的分布特征,入黄口采样点∑EDCs浓度范围为82.28~979.82 ng·L^(-1).来源分析显示,宁夏入黄排水沟中BPA主要来自于工业废水和生活污水,OP主要来源于工业废水,E1主要来自于畜禽养殖废水,E3主要来源于生活污水.风险评价结果表明,入黄排水沟中EDCs的生态风险处于中风险或低风险,但各采样点EDCs的雌激素活性风险均表现为高风险.Solid-phase extraction and ultra-high performance liquid chromatography-mass spectrometry were used to detect and analyze the contamination of nine typical endocrine disrupting chemicals(EDCs)in drains flowing into the Yellow River of Ningxia.Sources of these EDCs were analyzed,and their risks were assessed.The results showed that EDCs were detected in drains at all 33 sampling sites,with total concentrations(∑EDCs)of 82.28-1730.09 ng·L^(-1).Among phenolic compounds,bisphenol A(BPA)and nonylphenol(NP)were two that were more commonly detected EDCs,with the detection rates above 90%;estrone(E1)and estriol(E3)were more commonly detected estrogenic compounds,both with detection rates of 79%.On a spatial scale,the average concentrations of∑EDCs in the drains in Shizuishan and Yinchuan were much higher than those in Wuzhong and Zhongwei.Concentrations of∑EDCs at the sampling sites before flowing into Yellow River ranged from 82.28 to 979.82 ng·L^(-1).The source analysis showed that industrial wastewater and domestic sewage were two primary sources for BPA,whereas industrial wastewater was the primary source for OP.The primary sources of E1 and E3 were livestock and poultry breeding wastewater and domestic sewage,respectively.Risk assessment results showed that EDCs in drains flowing into the Yellow River posed low or moderate ecological risk but high risk for estrogenic activity at all sampling sites.

关 键 词：入黄排水沟 内分泌干扰物(EDCs) 空间分布特征 来源分析 风险评价 

分 类 号：X171.5[环境科学与工程—环境科学] X820.4