石墨烯修饰电极差分脉冲溶出伏安法同时检测食品中痕量铅?镉和铜

[目的]构建石墨烯修饰电极用差分脉冲溶出伏安法检测重金属的方法。[方法]采用电还原的方法将氧化石墨烯变成还原型石墨烯,针对电极修饰材料石墨烯进行表征测试,优化石墨烯修饰电极检测的试验检测条件。[结果]石墨烯修饰电极可以实现在4 min内同时检测食品中的铅、镉和铜元素,且具有很好的准确度、稳定性和抗干扰性。[结论]研究可为快速准确地检测食品中重金属元素提供参考。

Study on the Determination of Lead,Cadmium and Copper Using Differential Pulse Voltammetry (DPV) with Graphene Modified GC electrode

Objective] To present a method for the determination of heavy mental using differential pulse voltammetry(DPV) with grapheme modified GC electrode.[ Method] The experiment used electroreduction method to reduce the graphite oxide and tested characterizations of the graphene which modified GC electrode.And the experimental condition for the determination was optimized.[ Result] Graphene modified GC e-lectrode could simultaneously determine lead,cadmium and copper in food within four minutes,and it presented a precise,stable and jamming-free method.[ Conclusion] The study can provide reference for rapidly and accurately determining heavy metals in food.