摘要
为了初步探究贵州赤水河流域地表水的抗生素浓度分布特征及潜在生态风险,利用固相萃取-液相色谱串联质谱法(SPE-LC-MS)对地表水样品中21种抗生素进行检测分析.结果表明,赤水河地表水共检出12种抗生素,总浓度水平为ND~1 166.97 ng·L^(-1),氧氟沙星、甲氧苄啶和磺胺嘧啶的检出率均为100%.平均检出浓度最高的3种抗生素分别是氧氟沙星(221.59 ng·L^(-1))、四环素(13.18 ng·L^(-1))和磺胺嘧啶(4.11 ng·L^(-1)),抗生素浓度分布呈现:下游(359.41 ng·L^(-1))>中游(224.59 ng·L^(-1))>上游(179.72 ng·L^(-1)).生态环境风险评估结果表明,下游点位W21具有最大的风险商值,其中四环素、强力霉素、恩诺沙星、诺氟沙星、红霉素和林可霉素的风险商值具有中风险水平,氧氟沙星具有高风险水平,这说明赤水河流域水体抗生素可能会造成一定的生态风险.
To preliminarily explore the antibiotic concentration distribution characteristics of Guizhou Chishui River basin surface water and potential ecological risks, we used solid phase extraction liquid chromatography tandem mass spectrometry(SPE-HPLC-MS) to analyze 21 types of antibiotics in surface water samples. Twelve types of antibiotics were detected in the Chishui River basin surface water, and the total concentrations of ofloxacin, sulfadiazine, and trimethoprim ranged from ND-1 166.97 ng·L^(-1), with a detection rate of 100%. On average, the highest concentration of the three types of antibiotics detected were ofloxacin(221.59 ng·L^(-1)), tetracycline(13.18 ng·L^(-1)), and sulfadiazine(4.11 ng·L^(-1)), and the antibiotic concentration distribution showed the following order of characteristics: downstream(359.41 ng·L^(-1))>midstream(224.59 ng·L^(-1))>upstream(179.72 ng·L^(-1)). The ecological environment risk assessment results indicated the largest risk for downstream W21, tetracycline, doxycycline, enrofloxacin, norfloxacin, and erythromycin. The risk quotient revealed that lincomycin had a medium-risk level, and ofloxacin had a high-risk level. This shows that antibiotics in the waters of the Chishui River basin may cause certain ecological risks.
作者
吴天宇
李江
杨爱江
李彦澄
陈瑀
何强
马凯
胡霞
王斌
艾佳
钟雄
WU Tian-yu;LI Jiang;YANG Ai-jiang;LI Yan-cheng;CHEN Yu;HE Qiang;MA Kai;HU Xia;WANG Bin;AI Jia;ZHONG Xiong(Key Laboratory of Karst Georesources and Environment,Ministry of Education,College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China;Guizhou Karst Environmental Ecosystem Observation and Research Station,Ministry of Education,Guiyang 550025,China;Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,China;Guizhou Academy of Testing and Analysis,Guiyang 550000,China;College of Civil Engineering,Guizhou University,Guiyang 550025,China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2022年第1期210-219,共10页
Environmental Science
基金
贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2017]060)
贵州省科学技术基金项目(黔科合基础[2020]1Z051)
国家自然科学基金项目(31700115)。
关键词
抗生素
地表水
赤水河
污染
生态风险
antibiotic
surface water
Chishui River
contamination
ecological risk
