摘要
在20%的乙醇和B-R缓冲溶液(pH为7.2)中,分别比较了青蒿素(artemisinin,qhs)在金电极、银电极、铂电极、玻碳电极上的电化学行为,结果表明:在+0.00～-1.30V(vs.SCE)的电位范围内,青蒿素在金电极和铂电极上无氧化还原峰信号;而在银电极和玻碳电极上有一还原峰,无氧化峰,峰电位为分别-0.64V和-0.91V.此外在银电极和玻碳电极上,血红素(hemin)能够催化青蒿素的还原.
In the solution of 20% ethanol +B-R(pH=7.2),the electrochemical behaviors of artemisinin(QHS) at various electrodes were compared.The results showed that between +0.00?V～-1.30?V(vs.SCE),QHS has no redox signal at the Au and Pt electrode.However,at the Ag and Gc electrode,it has a reductive peak and the potential was -0.64?V and -0.91?V.Moreover,hemin can catalyze the QHS's reduction at the Ag and glassy carbon(GC) electrode.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
2003年第2期144-147,152,共5页
Journal of Yunnan University(Natural Sciences Edition)
基金
广东省自然科学基金资助项目(021190).
关键词
青蒿素
银电极
玻碳电极
电化学行为
血红素
QHS(artemisinin)
Ag electrode
GC electrode
electrochemical behavior
hemin
