A molecularly imprinted sensor based on an electrochemiluminescent membrane for ultratrace doxycycline determination
文献类型： 外文期刊
作者： Li, Shuhuai 1 ; Li, Jianping 1 ; Lin, Qingyu 4 ; Wei, Xiaoping 1 ;
作者机构： 1.Guilin Univ Technol, Coll Chem & Bioengn, Guangxi Key Lab Electrochem & Magnetochem Funct M, Guangxi, Peoples R China
2.Chinese Acad Trop Agr Sci, Hainan Prov Key Lab Qual & Safety Trop Fruits & V, Haikou, Peoples R China
3.Chinese Acad Trop Agr Sci, Anal & Test Ctr, Haikou, Peoples R China
4.Sichuan Univ, College Chem, Chengdu 610064, Peoples R China
期刊名称：ANALYST （ 影响因子：4.616； 五年影响因子：4.232 ）
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收录情况： SCI
摘要： A new molecularly imprinted sensor was developed based on an electroluminescent molecularly imprinted polymer (MIP) membrane and used for doxycycline determination. The MIP was prepared by electropolymerization of pyrogallol doped with alizarin red. An electrochemiluminescence (ECL) signal was produced by the oxidation of the poly-pyrogallol polymer and reaction with alizarin red. The luminescence intensity was enhanced by doxycycline molecules which were re-adsorbed in cavities in MIP due to the energy transfer of the doxycycline oxidized intermediate to alizarin red. The changes of ECL intensities were linear with the concentrations of doxycycline in the range of 2 x 10(-10) to 5 x 10(-8) mol L-1. The detection limit was 5.17 x 10(-11) mol L-1. This method was utilized to determine doxycycline residuals in fish muscles with satisfactory results.
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