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模拟水流环境中抗生素的行为特征与归宿

徐维海 张 干 邹世春 颜 文 杨 琛

徐维海, 张 干, 邹世春, 颜 文, 杨 琛. 模拟水流环境中抗生素的行为特征与归宿[J]. 环境科学研究, 2009, 22(10): 1213-1217.
引用本文: 徐维海, 张 干, 邹世春, 颜 文, 杨 琛. 模拟水流环境中抗生素的行为特征与归宿[J]. 环境科学研究, 2009, 22(10): 1213-1217.
XU Wei-hai, ZHANG Gan, ZOU Shi-chun, YAN Wen, YANG Chen. Behavior and Fate of Antibiotics in a Lid-driven Elongated Annular Flume[J]. Research of Environmental Sciences, 2009, 22(10): 1213-1217.
Citation: XU Wei-hai, ZHANG Gan, ZOU Shi-chun, YAN Wen, YANG Chen. Behavior and Fate of Antibiotics in a Lid-driven Elongated Annular Flume[J]. Research of Environmental Sciences, 2009, 22(10): 1213-1217.

模拟水流环境中抗生素的行为特征与归宿

Behavior and Fate of Antibiotics in a Lid-driven Elongated Annular Flume

  • 摘要: 利用香港理工大学水动力学实验室的大型流动水槽(FLUME)模拟动态水流环境,研究了4种不同类型的抗生素(红霉素、罗红霉素、氧氟沙星和磺胺甲唑)在动态和静态水体与沉积物之间的交换与配分,初步探明了抗生素类药物在河流环境中的行为及归宿. 结果显示:在水流环境下,抗生素被迅速吸附到水体中悬浮的颗粒物和表层沉积物中,并可通过剪切力作用被吸附到次表层沉积物中. 而在静止水体中,仅有少量的抗生素被吸附到表层沉积物中. 氧氟沙星显示出强的吸附特性(DT50≥22 d),具有高的吸附系数(Kd),而磺胺甲唑的吸附能力较弱. 在FLUME系统中,氧氟沙星具有适中的持久性,其他3种药物显示出弱的持久性;而在静止系统中,4种药物均显示出适中的持久性. 抗生素在水流环境中的持久性要低于静止环境. 颗粒物的吸附与自身的代谢是抗生素在水流环境中的主要归宿.

     

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出版历程
  • 收稿日期:  2009-02-06
  • 修回日期:  2009-05-08
  • 刊出日期:  2009-10-25

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