聚天青I/石墨烯修饰电极的电化学行为及对亚硝酸根的检测  

The electrochemical behaviors of poly( azure I ) / graphene modified electrode and its application for nitrite detection

作　　者：张娜[1] 张克营[2] 朱萍萍[2] 邢俭俭 周侠[2] 

机构地区：[1]安徽省宿州学院体育学院,宿州234000 [2]安徽省宿州学院自旋电子与纳米材料安徽省重点实验室化学化工学院,宿州234000

出　　处：《分析试验室》2015年第7期816-818,共3页Chinese Journal of Analysis Laboratory

基　　金：安徽省自然科学基金青年项目(1208085QB33);宿州学院科研平台开放课题(2014YKF52;2014YKF45);宿州学院大学生科研立项(KYLXLKYB14-31);2014年国家级"大学生创新创业训练计划"项目(201410379001);2014年省级"大学生创新创业训练计划"项目(AH201410379111);宿州学院优秀拔尖人才培育资助项目(2014XQNRL005)资助

摘　　要：制备了聚天青I/石墨烯修饰玻碳电极。用循环伏安法研究了溶液pH,扫描速率对聚天青I/石墨烯修饰电极的电化学行为的影响及修饰电极对NO-2的电催化作用。利用示差脉冲伏安技术检测NO-2,NO-2浓度在1.0×10^-7-1.0×10^-5mol/L的范围内,其氧化峰电流与浓度呈现良好的线性关系,检出限为3.7×10-8mol/L（S/N=3）。修饰电极已用于水体中NO-2的检测。In this paper, we fabricated a poly （azure I）/graphene modified glassy carbon electrode. The influence of scan rate, pH on the electrochemical behavior of modified electrode and electrocatalytie ability for the oxidation of nitrite was investigated by cyclic voltammetry. The DPV was used to detect nitrite. The results indicated that the oxidation peak current of nitrite was linear with the concentrations of nitrite in the range of 1.0 ×10^-7-1.0×10^-5mol/L with a correlation coefficient of 0. 992, the limits of detection was 3.7×10^-8mol/L （SIN = 3 ）. In addition, the electrode exhibited long-term stability and excellent reproducibility, and was used to analyze the samples with good satisfactory results.

关 键 词：聚天青I 石墨烯 亚硝酸根 电催化 

分 类 号：X830.2[环境科学与工程—环境工程] O657.1[理学—分析化学]