摘要
将Nafion和石墨烯及纳米金复合后修饰在玻碳电极上制成修饰电极,用于尿酸电化学行为的研究。在pH 5.8的磷酸盐缓冲溶液中,该修饰电极对尿酸具有良好的电催化作用,尿酸浓度在2.0×10^(-7)~2.0×10^(-5)mol/L范围内与其氧化峰电流呈较好的线性关系,相关系数为0.9843,检出限为1.0×10^(-8)mol/L。方法用于实际样品的测定,加标回收率为96.8~103.2%,RSD为2.7~3.3%。
Nafion,graphene and gold nanoparticles were composited and modified on glassy carbon electrode to make a modified electrode,which was used in the study of the electrochemical behavior of uric acid.In the phosphate buffer solution of pH 5.8,the modified electrode had a good electrocatalytic effect on uric acid.The oxidation peak current had a good linear relationship with the concentration of uric acid in the range of 2.0×10^(-7) mol/L-2.0×10^(-5) mol/L.The linear correlation coefficient was 0.9843,and the detection limit was 1.0×10^(-8) mol/L.The recoveries were 96.8%-103.2%and the RSDs were 2.7%-3.3%.
作者
田欣雨
樊雪梅
Tian Xinyu;Fan Xuemei(College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China)
出处
《分析仪器》
CAS
2022年第1期5-8,共4页
Analytical Instrumentation
基金
陕西省科技厅项目(2018JM2040)
商洛学院科技创新团队项目(18SCX003)项目资助。
关键词
修饰电极
尿酸
石墨烯
纳米金
Modified electrode
Uric acid
Graphene
Gold nanoparticle
