肾上腺素电化学氧化反应特性的研究  

Studies on Characteristic of Electrochemical Oxidation of Epinephrine

作　　者：白进发[1,2] 郝常同[1,2] 张文智 

机构地区：[1]首都医科大学化学教研室 [2]河北师范大学化学系

出　　处：《河北师范大学学报（自然科学版）》1998年第1期78-81,共4页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金;河北省自然科学基金

摘　　要：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；The present paper discusses characteristic of electrochemical oxidation of epinephrine at glassy carbon electrode(GCE) in pH3～7 constant ionic strength solution with cyclic voltammetry experiment.The adsorption phenomenon of epinephrine is researched and the saturate surface excess( Γ )and other kinetic parameters of the electrode 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 analysis that the variation of pH value of McIlvaine buffer solution highly affected kinetic characteristic of electrochemicaloxidationofepinephri ne.

关 键 词：肾上腺素 玻璃碳电极 电化学氧化 吸附 

分 类 号：Q577.03[生物学—生物化学]