| 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 |
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| 作者单位： | ;1.中国石油大学胜利学院化学工程学院;2.中南民族大学化学与材料科学学院;3.广东省潮州市质量计量监督检测所 |
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| 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、pH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1.0×10-9~3.8×10-5 mol/L范围内具有良好的线性关系,检出限为3.5×10-10 mol/L(RSN=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.
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| 关 键 词： | 石墨烯 离子液体 酪氨酸酶 双酚A 电化学传感器 |
Electrochemical Sensor for Bisphenol A Based on Tyrosinase/ionic Liquid-graphene Nanointerface |
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| Institution: | ,School of Chemical Engineering,Shengli College China University of Petroleum,College of Chemistry and Materials Science,South-Central University for Nationalities,Chaozhou Quality and Measurement Supervision and Inspection Institute |
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| 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 3.5×10-10 mol/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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| Keywords: | graphene ionic liquid tyrosinase bisphenol A electrochemical sensor |
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