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| Electrocatalytic Oxidation of Glutathione at nano-TiO2-Caffeic Acid Modified Carbon Paste Electrode and Its Electrochemical Determination |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:glutathione nano-TiO2 caffeic acid modified carbon paste electrode electrocatalytic oxidation electrochemical determination |
| Author | Institution |
| 张艳梅，段成茜，高作宁 |
1.宁夏大学化学化工学院能源化工重点实验室.2.宁夏医科大学高等卫生职业技术学院 |
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| Abstract: |
| The electrocatalytic oxidation behaviors and electrochemical determination of glutathione（GSH） were investigated at nano-TiO2-caffeic acid modified carbon paste electrode（nano-TiO2-CFA/CPE）.The experimental results indicated that GSH showed a very poor electrochemical response at CPE and nano-TiO2/CPE,but GSH at nano-TiO2-CFA/CPE exhibited a better electrocatalytic activity than that at CFA/CPE.The kinetic properties of GSH were discussed at nano-TiO2-CFA/CPE by cyclic voltammetr（CV）and chronoamperometry（CA）.The catalytic oxidation peak current of GSH versus its concentration had a good linear relationship in the concentration range of 9.0×10-6 -1.0×10-3 mol·L-1 with a correlation coefficient of 0.997 5,and a detection limit of 8.85×10-7 mol·L-1 by linear sweep voltammetry（LSV）.The method was applied in the determination of GSH contents in real samples with satisfactory results. |
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