纳米铂-石墨烯修饰电极电化学检测1-羟基芘  

Electrochemical Detection of 1-Hydroxypyrene Using a Nano Platinum/Graphene Modified Electrode

作　　者：杨成 封肖颖 孙嵇成 庞月红[1] YANG Cheng;FENG Xiao-ying;SUN Ji-cheng;PANG Yue-hong(School of Food Science and Technology,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学食品学院,江苏无锡214122

出　　处：《分析测试学报》2020年第9期1149-1154,共6页Journal of Instrumental Analysis

基　　金：国家自然科学基金项目(21976070);中央高校基本科研业务费专项资金(JUSRP22003)。

摘　　要：该文以氧化石墨烯和氯铂酸混合液为前驱体,采用一步电沉积法制备了纳米铂/还原氧化石墨烯修饰电极(Pt/E-rGO/GCE),通过差分脉冲伏安法对1-羟基芘进行原位富集检测。结果表明,当溶液pH 2.0,制备Pt/E-rGO/GCE的电沉积圈数为5圈时,在50~700 nmol/L范围内,1-羟基芘浓度与还原峰电流呈线性关系,相关系数(r)为0.976,检出限(S/N=3)为12.1 nmol/L。该方法的稳定性、重现性及抗干扰能力良好,将其应用于尿样的检测,回收率为99.7%~108%,相对标准偏差为3.2%~4.2%。Pt/E-rGO/GCE的良好性能对电化学传感器的构建具有一定的实用价值。A nano platinum/reduced graphene oxide modified glassy carbon electrode(Pt/E-rGO/GCE)was prepared by one-step electrodeposition using a mixture of graphene oxide and chloroplatinic acid as the precursor.The electrochemical behavior of 1-hydroxypyrene on the modified electrode was studied,and a sensitive accumulation and detection of 1-hydroxypyrene was performed by differential pulse voltammetry.Results showed that the response current for 1-hydroxypyrene reached the maximum when the solution was set at pH 2.0 and the number of electrodeposition cycles was 5.The concentration of 1-hydroxypyrene showed a good relationship with the reduction peak current in the range of 50-700 nmol/L with a correlation coefficient(r)of 0.976 and a limit of detection(S/N=3)of 12.1 nmol/L.The Pt/E-rGO/GCE exhibited good stability,reproducibility and anti-interference ability,and was applied in the determination of 1-hydroxypyrene in human urine with recoveries of 99.7%-108%and relative standard deviations of 3.2%~4.2%.The good performance of the Pt/E-rGO/GCE provides a certain practical value for the construction of an electrochemical sensor.

关 键 词：1-羟基芘 纳米铂 还原氧化石墨烯 修饰电极 电化学传感 

分 类 号：O657.1[理学—分析化学] O625.15[理学—化学]