普鲁士蓝/石墨烯修饰电极检测酱油中的亚硝酸盐  

Detection of Nitrite in Soy Sauce Using a Prussian Blue/Graphene Modified Electrode

作　　者：高红丽[1] 唐喆[1] 曹力[1] 李兆周[1] 李道敏[1] 李松彪[1] 侯玉泽[1] GAO Hongli;TANG Zhe;CAO Li;LI Zhaozhou;LI Daomin;LI Songbiao;HOU Yuze(College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China)

机构地区：[1]河南科技大学食品与生物工程学院,河南洛阳471023

出　　处：《食品科学》2017年第4期255-259,共5页Food Science

基　　金：国家自然科学基金青年科学基金项目(21605037);河南科技大学青年基金项目(2015QN040)

摘　　要：利用电化学沉淀普鲁士蓝纳米粒子在石墨烯的表面,采用差分脉冲伏安法对该电极进行表征,并研究亚硝酸根离子在修饰电极上的电化学行为。结果表明:在0.10 mol/L磷酸盐缓冲液(pH 7.0)中,亚硝酸根在1×10-6~1×10-2 mol/L浓度范围内呈线性关系,信噪比为3时检出限为3×10-8 mol/L。所构建的普鲁士蓝/石墨烯修饰电极对亚硝酸根离子具有良好的电催化活性,表现出良好的稳定性、重复性和抗干扰能力,同时将所构建的复合材料修饰电极应用于酱油中亚硝酸盐的检测。In this work,we prepared graphene-based nanocomposite material by electrochemically depositing Prussian blue(PB)nanoparticles on the surface of graphene.Differential pulse voltammetry(DPV)was used to characterize the electrodeand study the electrochemical behavior of nitrite ion on the modified electrode,and the electrode was used to detect nitritein soy sauce.The results showed that the Prussian blue/graphene modified electrode had a good electrocatalytic activity tonitrite ion in0.10mol/L PBS buffer solution(pH7.0).In the concentration range of1×10-6-1×10-2mol/L,the methodpresented a linear relationship.The limit of detection(LOD)was3×10-8mol/L at a signal-to-noise ratio of3.The Prussianblue/graphene modified electrode showed a good stability,reproducibility and anti-interference ability.

关 键 词：石墨烯 普鲁士蓝 亚硝酸根 差分脉冲伏安法 修饰电极 

分 类 号：O657.1[理学—分析化学]