羟苯磺酸钙在裸玻碳电极上电化学行为研究  

Electrochemical behavior of calcium hydroxobenzene sulfonate on the bare GC electrode

作　　者：贾瑞虹[1] 白慧云[1] 贺艳斌[1] Jia Ruihong;Bai Huiyun;He Yanbin(Department of Pharmacy,Changzhi Medical College)

机构地区：[1]长治医学院药学系,046000

出　　处：《长治医学院学报》2021年第2期85-88,共4页Journal of Changzhi Medical College

基　　金：长治医学院校级创新团队项目(CX201904)。

摘　　要：目的:探索羟苯磺酸钙(CD)在裸玻碳(GC)电极上的电化学行为,并考察该电极测定CD的最优条件及对实际样品的分析应用。方法:采用循环伏安法研究裸GC电极上CD的氧化还原性质。结果:在0.5 mol·L^(-1)的H_3PO_4(pH 1.1)溶液中,CD的伏安曲线表现出一对明显的氧化峰(E_(pa)为0.74 V)和还原峰(E_(pc)为0.21 V),其氧化还原过程受扩散控制。在最优实验条件下,CD氧化峰电流与其浓度在3×10^(-6)~7×10^(-3)mol·L^(-1)范围内呈良好线性关系,检出限为5.0×10^(-7)mol·L^(-1)。结论:裸GC电极用于实际样品中CD的含量测定,结果满意。Objective:To explore the electrochemical behavior of calcium dobesilate(CD)on the bare glassy carbon(GC)electrode,and investigate the optimal conditions for the determination of CD and its application in the analysis of actual samples.Methods:The REDOX properties of calcium dobesilate on the bare GC electrode were studied by cyclic voltammetry.Results:In 0.5 mol·L^(-1) H3PO4(pH 1.1)solution,the voltammetry curve of CD showed a pair of obvious oxidation peak(E_(pa)=0.74 V)and reduction peak(E_(pc)=0.21 V),and the REDOX process was controlled by diffusion.Under the optimal experimental conditions,the peak current of CD oxidation showed a good linear relationship with its concentration in the range of 3×10^(-6)~7×10^(-3) mol·L^(-1),and the detection limit was 5.0×10^(-7) mol·L^(-1).Conclusion:The bare GC electrode was used to determine the content of calcium calcium dobesilate in actual samples with satisfactory results.

关 键 词：羟苯磺酸钙 裸GC电极 电化学 

分 类 号：O657.1[理学—分析化学]