电还原氧化石墨烯电极上 1-羟基芘电化学传感的协同积累。
Synergistical accumulation for electrochemical sensing of 1-hydroxypyrene on electroreduced graphene oxide electrode.
机构信息
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
出版信息
Talanta. 2019 Jan 15;192:387-394. doi: 10.1016/j.talanta.2018.08.042. Epub 2018 Aug 29.
A graphene modified glassy carbon electrode was fabricated for sensitive and convenient electrochemical detection of 1-hydroxypyrene (1-OHP). The graphene modified electrode was prepared by eletrochemical reduction of graphene oxide on glass carbon electrode. l-OHP was synergistically accumulated on the graphene modified electrode via π-π conjugate adsorption and electrochemical oxidation. Electrochemical behavior of l-OHP on the graphene modified glass carbon electrode was studied in detail. The developed method gave a linear calibration curve for the determination of 1-OHP in the range of 5-300 nM (R = 0.997), a limit of detection of 0.84 nM (S/N = 3). The proposed method was also successfully applied to the analysis of urine samples for l-OHP with the recoveries of 97.3-101.1%.
一种基于石墨烯修饰的玻碳电极被构建，用于灵敏、便捷地电化学检测 1-羟基芘（1-OHP）。该石墨烯修饰电极是通过玻碳电极上电还原氧化石墨烯制备得到的。在石墨烯修饰电极上，通过π-π共轭吸附和电化学氧化，1-OHP 协同地得到了富集。详细研究了 l-OHP 在石墨烯修饰玻碳电极上的电化学行为。所开发的方法在 5-300 nM 的范围内对 1-OHP 的测定给出了线性校准曲线（R = 0.997），检测限为 0.84 nM（S/N = 3）。该方法还成功地应用于尿液样品中 l-OHP 的分析，回收率为 97.3-101.1%。
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