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马勇, 李瑞, 刘贵深, 侯晓东, 黄奕娜, 李春涯. 基于酪氨酸酶/ 离子液体 - 石墨烯纳米复合界面的双酚 A 电化学传感器解放军防空兵学院,河南 郑州450000[J]. 信阳师范学院学报(自然科学版), 2015, 28(4): 546-549. DOI: 10.3969/j.issn.1003-0972.2015.04.020
引用本文: 马勇, 李瑞, 刘贵深, 侯晓东, 黄奕娜, 李春涯. 基于酪氨酸酶/ 离子液体 - 石墨烯纳米复合界面的双酚 A 电化学传感器解放军防空兵学院,河南 郑州450000[J]. 信阳师范学院学报(自然科学版), 2015, 28(4): 546-549. DOI: 10.3969/j.issn.1003-0972.2015.04.020
shu
Ma Yong , Li Rui , Liu Guisheng , Hou Xiaodong , Huang Yina , Li Chunya . Electrochemical Sensor for Bisphenol A Based on Tyrosinase/ionic Liquid-graphene Nanointerface[J]. Journal of Xinyang Normal University (Natural Science Edition), 2015, 28(4): 546-549. DOI: 10.3969/j.issn.1003-0972.2015.04.020
Citation: Ma Yong , Li Rui , Liu Guisheng , Hou Xiaodong , Huang Yina , Li Chunya . Electrochemical Sensor for Bisphenol A Based on Tyrosinase/ionic Liquid-graphene Nanointerface[J]. Journal of Xinyang Normal University (Natural Science Edition), 2015, 28(4): 546-549. DOI: 10.3969/j.issn.1003-0972.2015.04.020
shu

基于酪氨酸酶/ 离子液体 - 石墨烯纳米复合界面的双酚 A 电化学传感器解放军防空兵学院,河南 郑州450000

Electrochemical Sensor for Bisphenol A Based on Tyrosinase/ionic Liquid-graphene Nanointerface

    摘要
  • 摘要: 以 1 , 3 - 二( 4 - 氨基 - 吡啶) 丙烷四氟硼酸盐离子液体修饰石墨烯纳米复合物, 负载酪氨酸酶至玻碳电极表面构建双酚 A 电化学传感器 . 优化了滴涂量、 检测电位、p H值等实验条件对传感器响应性能的影响 . 结果表明, 传感器的安培响应电流与双酚 A 浓度在 1.0×1 0-9 ~3.8×1 0-5m o l / L 范围内具有良好的线性关系,检出限为 3.5×1 0-1 0m o l / L ( R S N =3 ) . 用于矿泉水瓶中溶出双酚 A 含量测定, 结果与高效液相色谱一致 .

     

    Abstract: Graphene-1,3-di(4-amino-1-pyridinium) propane tetrafluoroborate ionic liquid nanocomposite (Gr-DAPPT) modified on a glassy carbon electrode and then tyrosinase (Tyr) was immobilized onto the electrode to fabricate a biosensor. Experimental conditions including the volume of Tyr-Gr-DAPPT solution, the applied potential, and pH value were optimized for bisphenol A (BPA) determination. The biosensor exhibited a linear response to BPA in the concentration range from 1.0×10-9 to 3.8×10-5 mol/L. The detection limit was calculated to be 3.5×10-10mol/L (RSN=3). Practical application of the biosensor was demonstrated by determining BPA leaching from commercial plastic drinking bottles. The result was consistent with that obtained by high performance liquid chromatography

     

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