摘要
利用超高效液相色谱-串联质谱联用技术(UPLC-MS/MS)检测了2019年3月份和7月份新疆赛里木湖近岸表层水中12种抗生素的浓度水平,分析了赛里木湖表层水中典型抗生素的时空分布特征及生态风险.结果表明,氧氟沙星和磺胺甲恶唑为赛里木湖中主要抗生素污染物,春季最高检出浓度分别为2.7×10^(4)和1.8×10^(3)ng/L,其次为红霉素(71.7ng/L)和土霉素(15.9 ng/L),其余抗生素浓度均小于10.0 ng/L.与其他湖泊或河流地表水相比,赛里木湖抗生素浓度除磺胺甲恶唑和氧氟沙星外,基本处于中等或低水平.由于人类活动和水力流动等因素,抗生素浓度存在时空分布差异,夏季抗生素浓度比春季低2~4个数量级;位于养殖区内的S_(1)点位抗生素总浓度明显高于其他点位.风险评估结果表明,春季红霉素、氧氟沙星和磺胺甲恶唑对赛里木湖生态环境持高风险(RQ>1).
Occurrence characteristic of antibiotics in the surface water of Lake Sayram in Xinjiang were analyzed by ultra-high-performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS).Ofloxacin and sulfamethoxazole were the main antibiotic pollutants in Lake Sayram.The highest concentrations of ofloxacin and sulfamethoxazole were 2.7×10^(4) ng/L and 1.8×10^(3) ng/L,respectively,followed by erythromycin(71.7 ng/L)and oxytetracycline(15.9 ng/L).Others were less than 10.0 ng/L.The antibiotic concentration of Lake Sayram,except for sulfamethoxazole and ofloxacin,were basically at a medium or low level compared with most surface water.Due to human activities and hydraulic flow or other factors,the concentration of antibiotics in summer was 2-4 orders of magnitude lower than that in spring,and the total concentration of antibiotics in aquaculture area(S_(1) site)was higher than that in other points.The risk assessment showed that erythromycin,ofloxacin and sulfamethoxazole had a high risk to the ecological environment of the lake in spring(RQ>1).
作者
张亚茹
张国栋
王永强
刘晓晖
毕斌
刘宪斌
卢少勇
Zhang Yaru;Zhang Guodong;Wang Yongqiang;Liu Xiaohui;Bi Bin;Liu Xianbin;Lu Shaoyong(School of Ocean and Environment,Tianjin University of Science and Technology,Tianjin 300457,P.R.China;National Engineering Laboratory for Lake Pollution Control and Ecological Restoration,State Key Laboratory of Environmental Criteria Risk Assessment,State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD),Chinese Research Academy of Environmental Sciences,Beijing 100012,P.R.China)
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2021年第2期483-493,共11页
Journal of Lake Sciences
基金
国家自然科学基金项目(41877409)
科技基础性工作专项重点项目(2015FY110900)联合资助。
关键词
赛里木湖
抗生素
赋存特征
生态风险
Lake Sayram
antibiotics
occurrence characteristics
ecological risk
