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《Chinese Journal of Analytical Chemistry》 2008-10
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Molecularly Imprinted Membrane-Based Sensor for the Detection of Chloramphenicol Succinate Residue in Milk

ZHANG Nuo-Wei2,DING Ming-Xing2,LIU Guo-Yan1,SONG Wei-Wei2,CHAI Chun-Yan11(School of Agricultrue & Biology,Shanghai Jiaotong University,Shanghai 201101)2(School of Animal Medicine,Huazhong Agricultural University,Wuhan 430070)  
Molecularly imprinted films(MIF) were prepared for the determination of chloramphenicol succinate(CAP-SC) by photopolymerization method on screen printed electrodes and superficial characteristic of these films was analyzed by scanning electron microscope.A sensor based on MIF for CAP-SC detecting was assembled after the screen printed electrodes was connected with an electrochemical analyzer by an electrode slot and the detection result was recorded by a recorder connected with the electrochemical analyzer.Standard curve for CAP-SC detection was established and the determination of CAP-SC in milk samples was carried out.Scanning election microscopic images of the imprinted films shows that there was a great many of imprinted micro-pores with a diameter about 100 nm on the surface of MIF.The MIF-based sensor shows high sensitivity and specificity towards the target CAP-SC and the response of MIF-sensor to concentration of CAP-SC displayed a linear correlation over a range from 1×10-8 mol/L to 1.2×10-5 mol/L with a detection limit of 2×10-9 mol/L.The recoveries were 93.5%-95.5% based on milk sample.
【Fund】: 国家自然科学基金(No.20571368);; “863”计划(No.2006AA10Z439)资助项目
【CateGory Index】: TS252.7
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