摘要
为了探究宁夏第三排水沟中药物和个人护理品(PPCPs)的污染特征与潜在生态风险,采用固相萃取-超高效液相色谱串联质谱法对第三排水沟中14种PPCPs进行检测分析.结果表明,14种PPCPs在第三排水沟和汇入水样中均有所检出,总浓度范围分别为117.74~1947.64 ng·L^(-1)和63.94~4509.39 ng·L^(-1).排水沟中吉非罗齐(GEM)、咖啡因(CAF)、阿伏苯宗(BM-DBM)、二苯甲酮-3(BP-3)、3-(4-甲基苯亚甲基)-樟脑(4-MBC)和避蚊胺(DEET)的检出率均达到100%.药物中检出浓度最高的是GEM(7.78~721.84 ng·L^(-1)),其次是CAF(41.74~246.86 ng·L^(-1));个人护理品中检出浓度最高的是DEET(3.17~219.91 ng·L^(-1)),其次是BP-3(56.92~150.14 ng·L^(-1)).不同采样点的PPCPs浓度呈现一定的空间差异,PPCPs总浓度在流经平罗县城后猛然增加,并在该段处达到最大,随后呈现下降趋势.相关性分析表明,4-MBC与COD呈显著的正相关关系(P<0.01),IBU、XMTD、TCC和TCS与NH~+_(4)-N呈较明显的正相关关系(P<0.05),DIC、BF、CBZ和DEET与TN呈较明显的正相关关系(P<0.05),表明PPCPs浓度和水质指标密切相关.生态风险评价结果显示DIC、IBU、GEM、CBZ、CAF和BP-3具有高风险,BM-DBM、TCC和TCS具有中等风险.
To investigate the contamination characteristics and potential ecological risks of pharmaceuticals and personal care products(PPCPs) in the Third Drain of Ningxia,14 PPCPs were detected and analyzed using solid-phase extraction coupled with ultra-high performance liquid chromatography-tandem mass spectrometry.The results showed that these 14 PPCPs were detected in the Third Drain and its confluent streams,with total concentrations of 117.74-1 947.64 ng·L^(-1) and 63.94-4 509.39 ng·L^(-1),respectively.Detection ratios of gemfibrozil(GEM),caffeine(CAF),avobenzone(BM-DBM),benzophenone-3(BP-3),3-(4-methylbenzylidene)-camphor(4-MBC),and diethyltoluamide(DEET) were 100% in the drain.The highest-concentration pharmaceutical was GEM(7.78-721.84 ng·L^(-1)),followed by CAF(41.74-246.86 ng·L^(-1)),and the highest-concentration personal care product was DEET(3.17-219.91 ng·L^(-1)),followed by BP-3(56.92-150.14 ng·L^(-1)).Concentrations of PPCPs at different sampling points exhibited spatial differences.The total PPCPs concentration increased dramatically and reached a maximum value after flowing through Pingluo County,then showed a decreasing trend downstream.Correlation analysis showed that 4-MBC was significantly positively correlated with COD(P<0.01).IBU,XMTD,TCC,and TCS were significantly correlated with NH^(+)_(4)-N(P<0.05).DIC,BF,CBZ,and DEET were significantly correlated with TN(P<0.05).The results indicated that concentrations of PPCPs were closely related to water quality indexes.Risk assessment showed that DIC,IBU,GEM,CBZ,CAF,and BP-3 had high risks,whereas BM-DBM,TCC,and TCS had moderate risks.
作者
李富娟
高礼
李凌云
郑兰香
马兰
杨桂钦
LI Fu-juan;GAO Li;LI Ling-yun;ZHENG Lan-xiang;MA Lan;YANG Gui-qin(School of Geography and Planning,Ningxia University,Yinchuan 750021,China;China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Regions,Yinchuan 750021,China;School of Ecology and Environment,Ningxia University,Yinchuan 750021,China;Analysis and Testing Center,Ningxia University,Yinchuan 750021,China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2022年第8期4087-4096,共10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)。
关键词
第三排水沟
药物和个人护理品(PPCPs)
水质指标
污染特征
生态风险
the Third Drain
pharmaceuticals and personal care product(PPCPs)
water quality index
pollution characteristic
ecological risk
