高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

双极电化学发光-分子印迹传感器检测水环境中全氟辛烷磺酸

黄声秀，刘利阳，杨伟强，汪庆祥，倪建聪   

  1. 闽南师范大学 化学化工与环境学院，漳州363000
  • 收稿日期:2024-03-05 修回日期:2024-04-17 出版日期:2024-04-17 发布日期:2024-04-17
  • 通讯作者: 倪建聪 E-mail:nijiancong@foxmail.com
  • 基金资助:
    国家自然科学基金项目(批准号：22376089)和福建省自然基金项目(批准号：2021J01991)资助.

Detection of Perfluorooctane Sulfonate in Aqueous Environment Based on Molecular Imprinting Coupled Bipolar Electrochemiluminescence Sensor

HUANG Shengxiu, LIU Liyang, YANG Weiqiang, WANG Qingxiang, NI Jiancong   

  1. Minnan Normal University Chemistry, Chemical Engineering and Environment, Zhangzhou 363000, China
  • Received:2024-03-05 Revised:2024-04-17 Online:2024-04-17 Published:2024-04-17
  • Contact: NI Jiancong E-mail:nijiancong@foxmail.com
  • Supported by:
    Supported by the National Natural Science Foundation of China (No. 22376089) and the Fujian Provincial Natural Foundation, China(No. 2021J01991).

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摘要： 本研究结合分子印迹(MIP)的特异性识别能力及双极电化学发光传感(BPECL)的高灵敏、抗干扰特点，构建了一种MIP/BPECL传感器，用于污水中全氟辛烷磺酸(PFOS)的检测. 以PFOS为模板分子，邻苯二胺(o-PD)为功能单体，在双极电极的阴极端电聚合分子印迹聚合物以特异性识别PFOS，采用扫描电镜和循环伏安法对电极进行表征；在双极电极的阳极端以钌联吡啶/三正丙胺(Ru(bpy)32+/TPrA)为输出信号，构筑传感和信号分离的MIP/BPECL传感体系. 最优条件下，该传感器对PFOS在1 -1000 nM范围内呈现良好的线性范围，检出限为0.43 nM (S/N=3). 将传感应用于环境水实际样品的加标回收测试，结果良好，所构建的MIP/BPECL具有灵敏度高、特异性好、抗干扰能力强的优点，通过改变分子印迹的模板分子，有望实现该传感器在其它环境污染物检测上的应用.

关键词: 全氟辛烷磺酸, 分子印迹, 双极电极, 电化学发光

Abstract: MIP/BPECL sensor was constructed for the detection of perfluorooctane sulfonic acid (PFOS) in sewage by combining the specific recognition ability of molecular imprinting (MIP) and the high sensitivity and anti-interference characteristics of bipolar electrochemical luminescence sensing (BPECL). Using PFOS as the template molecule and O-phenylenediamine (o-PD) as the functional monomer, the molecular-imprinted polymer was specifically identified by negative extreme electropolymerization of bipolar electrodes. The electrodes were characterized by scanning electron microscopy and cyclic voltammetry. The MIP/BPECL sensing system was constructed with Ruthenium bipyridine/tri-n-propylamine (Ru(bpy)32+/TPrA) as output signal at the positive extremity of the bipolar electrode. Under optimized conditions, the electrochemical sensor displayed a wide linear range from 1 to 1000 nM with the low limit of detection of 0.43 nM (S/N=3). The sensor is applied to the actual sample of environmental water labeling recovery test, and the result is good. The constructed MIP/BPECL has the advantages of high sensitivity, good specificity and strong anti-interference ability. By changing the template molecule of molecular imprinting, it is expected to realize the application of this sensor in the detection of other environmental pollutants.

Key words: Perfluorooctane sulfonate, Molecular imprinting, Bipolar electrode, Electrochemiluminescence

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