河口水中溶解性物质对氟喹诺酮类抗生素光解速率常数的影响
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- 英文论文题名：Influence of Dissolved Matters on the Photolysis Rate Constants of Fluoroquinolone Antibiotics in Estuary Water
- 论文作者：崔飞飞 ; 陈景文
- 英文论文作者：Feifei Cui ; Jingwen Chen ; Key Laboratory of Industrial Ecology and Environmental Engineering (MOE) ; School of Environmental Science and Technology ; Dalian University of Technology
- 年：2016
- 作者机构：工业生态与环境工程教育部重点实验室大连理工大学环境学院;
- 论文关键词：氟喹诺酮 ; 黄河口 ; 光降解 ; 巴洛沙星 ; 溶解性物质
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
- 语种：中文
- 分类号：X52;O643.11
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：294k
- 原文格式：D
- 会议级别：全国
摘要
氟喹诺酮类抗生素(FQs)是一类在水环境中经常被检出的新型污染物,光化学转化是其在水环境中的重要降解途径。FQs在水环境中的光转化过程受溶解性物质的影响,而河口区域水体中的溶解性物质的种类和浓度处于动态变化中,目前关于河口水体溶解性物质对FQs光解速率的复合影响的研究还鲜有报道。本研究以9种FQs作为模型化合物,测定其在5个取自黄河口区域不同盐度的水样中的光解速率常数,并考察了水中溶解性物质对FQs的光解速率常数的复合影响。结果表明,在5个水样中,巴洛沙星的光降解速率最慢,随水样盐度的增大,巴洛沙星在水样中的光降解速率存在递减趋势。通过中心组合实验研究NO3-,Cl-和溶解性有机质(DOM)对巴洛沙星光解速率的复合影响,实验结果表明,NO3-对巴洛沙星的光解具有显著促进作用,Cl-对其光解具有显著抑制作用(p<0.05),且各因素之间的相互作用也对巴洛沙星的光解产生显著影响。
Fluoroquinolone antibiotics(FQs) are emerging environmental micropollutants that were frequently detected in the aquatic environment.Photodegradation is a central factor in determining the fate of FQs in surface waters.Photodegradation of FQs can be affected by aqueous dissolved matters.The species and concentrations of dissolved matters in the estuarine waters vary dynamically.However,there have been few reports about the effects of dissolved matters on photochemical process of FQs in estuarine waters.This study selected 9 FQs as model compounds,elucidated the effects of dissolved matters on the photolysis rate constants(k) of FQs in 5 water samples collected from the Yellow River Estuary.The k of balofloxacin was lowest and decreased with the increase of salinity of water samples.Results of central composite design showed that NO3-promoted the photodegradation of balofloxacin,Cl-inhibited the photodegradation of balofloxacin significantly(p < 0.05),and interactions of the aquatic factors also influenced on the photodegradation of balofloxacin.
Fluoroquinolone antibiotics(FQs) are emerging environmental micropollutants that were frequently detected in the aquatic environment.Photodegradation is a central factor in determining the fate of FQs in surface waters.Photodegradation of FQs can be affected by aqueous dissolved matters.The species and concentrations of dissolved matters in the estuarine waters vary dynamically.However,there have been few reports about the effects of dissolved matters on photochemical process of FQs in estuarine waters.This study selected 9 FQs as model compounds,elucidated the effects of dissolved matters on the photolysis rate constants(k) of FQs in 5 water samples collected from the Yellow River Estuary.The k of balofloxacin was lowest and decreased with the increase of salinity of water samples.Results of central composite design showed that NO3-promoted the photodegradation of balofloxacin,Cl-inhibited the photodegradation of balofloxacin significantly(p < 0.05),and interactions of the aquatic factors also influenced on the photodegradation of balofloxacin.
引文
[1]Wei,X.X.;Chen,J.W.;Xie,Q.;Zhang,S.Y.Environ.Sci.Technol.2013,47(9):4284.