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论文类型：期刊论文

发表时间：2011-08-01

发表刊物：ELECTROANALYSIS

收录刊物：SCIE

卷号：23

期号：8

页面范围：1863-1869

ISSN号：1040-0397

关键字：Tetracycline (TC); Electrochemical sensor; Multiwall carbon nanotubes (MWNTs); Gold nanoparticles (GNPs); Molecularly imprinted polymer (MIP)

摘要：This paper reports the use of a tetracycline (TC) sensor constructed from a combination of molecularly imprinted polymer (MIP) and gold nanoparticles modified multiwall carbon nanotubes (MWNTs-GNPs). The results demonstrated that the amount of recognition sites in the polymer was significantly increased and the electron transfer ability of the sensor was improved. The relationship between the peak current and the TC concentration was linear in the range from 0.1 to 40 mg L(-1), and the detection limit was 0.04 mg L(-1) (SIN=3). The peak current to TC was 4.3, 6.2 and 6.8 times larger than that of oxytetracycline, chloramphenicol and nafcillin, respectively. Thus, the combination of MIP and MWNTs-GNPs provides a sensitive and selective electrochemical detection method for tetracycline.