期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
Studies on Characteristic of Electrochemical Oxidation of Epinephrine
摘要/Abstract
探讨了肾上腺素在pH3～7恒离子强度溶液中、玻璃碳电极上的吸附现象，解析了表面超额Γ等一系列电极过程的动力学参数。结果表明：（1）肾上腺素在玻璃碳电极上存在“弱”吸附现象，并且在pH≥3的McIlvaine缓冲溶液中，肾上腺素的吸附量是比较大的；（2）溶液介质pH值的变化对于肾上腺素电化学氧化过程的动力学特征影响较大
The present paper discusses characteristic of elect rochemical oxidation of epinephrine at glassy carbon elect rode(GCE)in pH 3 ～ 7 constant ionic strength solution with cyclic voltammet ry experiment.The adsorpt ion phenomenon of epinephrine is researched and the saturate surface ex cess(Γ＊)and o ther kinetic parameters of the elect rode process are calculated.The result of the experiment indicates that epinephrine is weakly absorbed at the GCE and the saturate surface excess of epinephrine can not be negligible in McIlvaine buffer solution whose pH value is more than or equal to three.It is also found through further analy sis that the variation of pH value of McIlvaine buffer solution highly affected kinetic characteristic of elect rochemical oxidation of epinephrine.