芦荟大黄素1.5阶微分阳极溶出伏安法测定及电化学性质研究

CORC > 厦门大学 > 2001年第7卷

	芦荟大黄素1.5阶微分阳极溶出伏安法测定及电化学性质研究; Study of Electrochemistry of Aloe-emodin and Determination of It with 1.5th Order Derivative Anodic Stripping Voltammetry
	林新华 ; 黄丽英 ; 陈伟 ; 罗红斌 ; 邱彬 ; 李春艳 ; LIN Xin hua ; HUANG Li ying ; CHEN Wei ; LUO Hong bin ; QIU Bin ; LI Chun yan
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9236.shtml
	2001-11-28
关键词	芦荟大黄素伏安行为微分阳极溶出伏安法测定 Aloe emodin Voltammetry Derivative anodic stripping voltammetry Determination
英文摘要	研究了芦荟大黄素在以 0 .1mol/LHAc (pH 2 .89)为支持电解质 ,玻碳电极为工作电极的吸附伏安行为 .结果表明芦荟大黄素存在一个准可逆的双电子转移过程 ,其峰电流Ip 和峰电位Ep 与溶液 pH值有关 .同时还建立了用 1.5阶微分阳极溶出伏安法测定含量的新方法 .在 - 0 .80V(vs.SCE)电位下富集 ,可得一灵敏的微分阳极溶出峰 ,峰电位Ep 为 - 0 .38V ,峰电流Ip 与芦荟大黄素的浓度在 2 .0× 10 - 7～ 8.0× 10 - 6 mol/L范围内成线性关系 ,最低检出限为 1.0× 10 - 7mol/L .该法用于含有芦荟大黄素体系的测定 ,具有简便、快速、准确等优点; In 0.1 mol/L HAc solution(pH=2.89),the voltammetric behaviours of aloe emodin at a glassy carbon electode has been studied. One pair of current peak of the voltammogram may be attributed to a quasireversible two electron transfer of aloe emodin molecules at the glassy carbon electrode. A new method, the derivative anodic stripping voltammetry, for aloe emodin determination is described. The adsorptive potential of aloe emodin is -0.80V(vs. SCE),while its stripping potential is -0.38V(vs.SCE). The peak current is propotional to the concentration of aloe emodin over the range of 2.0×10 -7 ～8.0×10 -6 mol/L. The method is simple, rapid and reliable for aloe emodin analysis.; 作者联系地址：福建医科大学药学系,福建医科大学药学系,福建医科大学药学系,福建医科大学药学系,福建医科大学药学系,福建医科大学药学系福建福州350004 ,福建福州350004 ,福建福州350004 ,福建福州350004 ,福建福州350004 ,福建福州350004; Author's Address: Dept. of Pharmaceutical, Fujian Medical Univ., Fuzhou 350004,China
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/2288/57581]
专题	2001年第7卷
推荐引用方式 GB/T 7714	林新华,黄丽英,陈伟,等. 芦荟大黄素1.5阶微分阳极溶出伏安法测定及电化学性质研究, Study of Electrochemistry of Aloe-emodin and Determination of It with 1.5th Order Derivative Anodic Stripping Voltammetry[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9236.shtml,2001.
APA	林新华.,黄丽英.,陈伟.,罗红斌.,邱彬.,...&LI Chun yan.(2001).芦荟大黄素1.5阶微分阳极溶出伏安法测定及电化学性质研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract9236.shtml.
MLA	林新华,et al."芦荟大黄素1.5阶微分阳极溶出伏安法测定及电化学性质研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract9236.shtml (2001).