Determination of Phenol by an Electrochemical Method with Glassy Carbon Electrode
- VernacularTitle:利用玻碳电极建立测定苯酚含量的电化学分析方法
- Author:
Guiying JIN
1
;
Caimei WANG
;
Weicong WU
;
Shujun HU
;
Yi LI
Author Information
1. 广东省药品检验所
- Keywords:
Glassy carbon electrode;
Electrochemical analysis;
Phenol;
Cyclic voltammetry;
Differential pulse voltammetry
- From:
China Pharmacist
2018;21(10):1878-1880
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish an electrochemical method for the determination of phenol. Methods: An electrochemical workstation with three electrodes system was used with glassy carbon electrode as working electrode, Ag/AgCl as reference electrode and Pt as counter electrode. Cyclic voltammetry and differential pulse voltammetry were used for the determination of phenol. Results:Under the condition of 4% Na2SO4as the supporting electrolyte, phenol showed an obvious oxidation peak on the glassy carbon elec-trode. The peak current increased linearly with the concentration of phenol within the range of 0. 8 μg·ml-1-10. 2 μg·ml-1( r=0. 997 5). The lower limit of detection was 0. 20 μg·ml-1. The average recovery was 101. 2% (RSD=2. 2% , n=6). Conclusion:The method is simple and accurate, and can be used for the determination of phenol.
