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引用本文:王瑞杰,裘钱玲琳,李国祥,纵亚男,唐剑锋,徐耀阳.宁波月湖水体中抗生素的分布与生态风险评价.湖泊科学,2018,30(6):1616-1624. DOI:10.18307/2018.0613
WANG Ruijie,QIUQIAN Linglin,LI Guoxiang,ZONG Yanan,TANG Jianfeng,XU Yaoyang.Distribution characteristics and ecological risk assessment of selected antibiotics in Moon Lake, Ningbo City. J. Lake Sci.2018,30(6):1616-1624. DOI:10.18307/2018.0613
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宁波月湖水体中抗生素的分布与生态风险评价
王瑞杰1,2,3, 裘钱玲琳1,2,3, 李国祥1,2,3, 纵亚男4, 唐剑锋1,3, 徐耀阳1,3
1.中国科学院城市环境研究所城市环境与健康重点实验室, 厦门 361021;2.中国科学院大学, 北京 100049;3.中国科学院宁波城市环境观测研究站, 宁波 315800;4.安徽师范大学生命科学学院, 芜湖 241000
摘要:
为探讨城市湖泊中抗生素的污染分布特征和生态风险,以宁波月湖为研究对象,利用固相萃取、超高效液相色谱串联质谱法(HPLC-MS/MS)对月湖水体抗生素进行分析,并采用生态风险熵值法(RQ)和混合抗生素的风险法(MRQ)评价磺胺类、大环内酯类、喹诺酮类、β-内酰胺类、林可霉素(LIN)等10种抗生素的生态风险情况.结果表明:氨苄西林(AMS)的检出浓度最高,浓度变化范围在ND~382.0 ng/L;其次为头孢氨苄(LEX)、诺氟沙星(NOR)、磺胺间甲氧嘧啶(SMM)、LIN、阿奇霉素(AZM)、磺胺噻唑(STZ)、磺胺甲恶唑(SMX)、泰乐菌素(TYL)和磺胺嘧啶(SDZ),浓度范围分别为ND~283.0、ND~267.0、ND~219.0、31.50~209.0、ND~147.0、7.34~109.0、ND~104.0、ND~80.50和20.40~57.30 ng/L.月湖水体中10种目标抗生素的水平总体上高于自然湖泊,尤其β-内酰胺类和LIN在城市湖泊中广泛存在.生态风险评估的结果表明,LIN、TYL、SMX、NOR、AMS的生态风险值(RQ)值均大于1,具有高的生态风险;其余5种抗生素处于中或低的生态风险水平.本研究为城市湖泊抗生素生态风险问题的深入研究提供了一定的科学依据和基础.
关键词:  宁波月湖  抗生素  污染分布  生态风险
DOI:10.18307/2018.0613
分类号:
基金项目:中国科学院城市环境与健康重点实验室项目(KLUEH-C-201701)和宁波市重大科技计划项目(2015C110001)联合资助.
Distribution characteristics and ecological risk assessment of selected antibiotics in Moon Lake, Ningbo City
WANG Ruijie1,2,3, QIUQIAN Linglin1,2,3, LI Guoxiang1,2,3, ZONG Yanan4, TANG Jianfeng1,3, XU Yaoyang1,3
1.Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China;2.University of Chinese Academy of Sciences, Beijing 100049, P. R. China;3.Ningbo Urban Environment Observation and Research Station, Chinese Academy of Sciences, Ningbo 315800, P. R. China;4.College of Life Science, Anhui Normal University, Wuhu 241000, P. R. China
Abstract:
The main objective of this study is focused on distribution characteristics, ecological risk assessment of selected antibiotics in the typical urban Moon Lake, which is situated in the center of Ningbo City. Water samples were concentrated by solid-phase extraction and determined by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The environmental quotients posed by the selected antibiotics were assessed by using the methods of ecological risk quotients (RQ) and mixture risk quotients (MRQ). Composition analysis indicated that human-derived drugs significantly contributed to the total contamination of antibiotics in the lake. The ampicillin (AMS) was detected the highest concentration in the antibiotics and the range of concentration was ND to 382.0 ng/L. The maximum concentrations of cephalexin (LEX) and norfloxacin (NOR) were 283.0 ng/L and 267.0 ng/L, respectively, which were relatively lower than AMS concentration levels. The detected concentration range of sulfamonomethoxine (SMM), lincomycin (LIN), azithromycin (AZM), sulfathiazole (STZ), sulfamethoxazole (SMX), tylosintartrate (TYL) and sulfadiazine (SDZ) were ND-219.0 ng/L, 31.50-209.0 ng/L, ND-147.0 ng/L, 7.34-109.0 ng/L, ND-104.0 ng/L, ND-80.50 ng/L and 20.40-57.30 ng/L, respectively. In comparison, the maximum concentration of most antibiotics in our investigated area were higher than natural lakes. The results of ecological risk assessment showed that the RQ values of LIN, TYL, SMX, NOR and AMS were higher than 1. That means these antibiotics have high ecological risks and the remaining five antibiotics are at low or intermediate ecological risk. However, the calculated MRQ value for each sampling site was obviously higher than those from individual antibiotics, which suggested antibiotic mixtures could cause a higher detrimental effect to environment than individual antibiotic. This study will provide a scientific basis and foundation for the further study on the ecological risk of antibiotics in urban lakes.
Key words:  Moon Lake  Ningbo City  antibiotics  pollution distribution  ecological risk
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