甘草酸的电化学行为研究

CORC > 厦门大学 > 1997年第3卷

	甘草酸的电化学行为研究; Study on the Electrochemical Behavior of Glycyrrhizic Acid
	王春明 ; 张延荣 ; 力虎林 ; Wang Chunming ; Zhang Yanrong ; Li Hulin
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9595.shtml
	1997-02-28
关键词	甘草酸电化学行为 Glycyrrhizic acid Electrochemical behavior
英文摘要	用循环伏安法、单扫描示波极谱法研究了甘草酸（ｇｌｙｃｙｒｒｈｉｚｉｃ，ＧＡ）在汞电极上的电化学行为及反应机理．证明甘草酸在ｐＨ＝４～１２的缓冲溶液（Ｈ３ＢＯ３＋Ｈ３ＰＯ４＋乙酸＋ＮａＯＨ）中有吸附峰，且示波极谱导数峰值与甘草酸浓度在８．３×１０－５～１．２×１０－６ｍｏｌ／Ｌ范围内成正比，使用悬汞电极（ＨＭＤＥ）线性扫描伏安法可使检测下限达２．４×１０－６ｍｏｌ／Ｌ．根据实验结果首次提出了甘草酸在汞电极上的反应机理．该机理同时被紫外光谱证明，得到合理解释; The electrochemical response characteristics of glycyrrhizic acid (GA) on the mercury electrode are described. In Britton Robinson buffer, the cyclic voltammograms exhibit two reduction peaks at a potential range of -0.80～-1.60 V.The peak potentials and currents change significantly when solution pH changes. By means of ultraviolet abosrption method, it is proved that the reduction position of GA molecular is ketenes radical. The peak potentials move positively with increasing pH demonstrate that the primary electrode reaction is accompanied by a coupled chemical reaction.The electrode reaction process is a typical example of ECE mechanism. Some effects of various parameters on adsorptive stripping voltammetry were also estimated. The proposed method has been applied to analysis practice examples.; 作者联系地址：兰州大学化学系; Author's Address: Department of Chemistry, Lanzhou University, Lanzhou 730000
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/57338]
专题	1997年第3卷
推荐引用方式 GB/T 7714	王春明,张延荣,力虎林,等. 甘草酸的电化学行为研究, Study on the Electrochemical Behavior of Glycyrrhizic Acid[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9595.shtml,1997.
APA	王春明,张延荣,力虎林,Wang Chunming,Zhang Yanrong,&Li Hulin.(1997).甘草酸的电化学行为研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract9595.shtml.
MLA	王春明,et al."甘草酸的电化学行为研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract9595.shtml (1997).