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Fabrication and Application of Electropolymerized Molecularly Imprinted Film for 3-Phenoxybenzoic Acid Detection

DAI Fangfang1, ZHOU Yao1, MA Liang1,2,3,*, GUO Xuexia4, ZHANG Yuhao1,2,5   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China; 2. Laboratory of Quality and Safety Risk Assessment
    for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture, Chongqing 400716, China;
    3. Laboratory of Risk Assessment for Citrus Quality and Safety, Ministry of Agriculture (Chongqing), Chongqing 400712, China;
    4. Chinese Academy of Agricultural Engineering, Ministry of Agriculture, Beijing 100125, China;
    5. National Food Science and Engineering Experimental Teaching Center, Southwest University, Chongqing 400715, China
  • Online:2015-10-25 Published:2015-10-20
  • Contact: MA Liang

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Abstract:

This study aimed to develop a rapid and precise method for detecting 3-phenoxybenzoic acid (3-PBA) in
environmental samples which can provide technical support for ecological risk assessment of the major pyrethroid
metabolite. Using o-aminophenol (OAP) as the monomer and 3-PBA as the template, a molecularly imprinted membrane
(MIM) for 3-PBA detection by combination with electrochemical technology was formed on the surface of glassy carbon
electrode (GCE). The response to 3-PBA was completed in 30 s. The results showed that the relationship between peak
current and 3-PBA concentration within the range of 2.00 mg/L to 11.00 mg/L was linear (the linear equation was y = 0.29x +
2.16) with a linear correlation coefficient of 0.99 and the limit of detection (LOD) was 1.47 mg/L. The recoveries were
between 92.00% and 101.00% in spiked water samples.

Key words: 3-phenoxybenzoic acid, environmental pollution, molecularly imprinted membrane, electrochemistry

CLC Number: