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Research of Environmental Sciences. 2009, (10) Core

Behavior and Fate of Antibiotics in a Lid-driven Elongated Annular FlumeChinese Full Text

XU Wei-hai~1,ZHANG Gan~2,ZOU Shi-chun~3,YAN Wen~1,YANG Chen~41.South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China2.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China3.School of Chemistry and Chemical Engineering,Zhongshan University,Guangzhou 510275,China4.College of Environmental Science and Engineering, South China University of Technology,Guangzhou 510640,China

Abstract: The environmental behavior and fate of four different antibiotics in both simulated riverine and quiescent environments were investigated.A Lid-driven Elongated Annular Flume built by the Laboratory for Hydrodynamics,Hong Kong Polytechnic University,was used to mimic the riverine environment.The results showed that the antibiotics were sorbed to suspended particle and surface sediments quickly,and could sorb to the subsurface through shear action in the riverine environment.However,only a few antibiotics were sorbed to the surface sediments in the quiescent environment.The adsorption of ofloxacin（OFL） into the sediment was particularly strong,having a bigger adsorption coefficient（Kd）,while the adsorption of sulfamethoxazole（SMZ） was found to be weak.OFL displayed a moderate persistence with a DT50 value in the flume system sediment ≥22 d,while others displayed less persistence.However,all antibiotics displayed moderate persistence in the quiescent environment.Antibiotics displayed less persistence in the riverine environment than in the quiescent environment.Adsorption to particles and metabolism were the main fates of antibiotics in the riverine environment.
Keywords：

antibiotics; FLUME; environmental behavior; fate;

  • DOI：

    10.13198/j.res.2009.10.103.xuwh.017

  • Series：

  • Subject：

  • Classification Code：

    X131.2

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