Voltammetric behavior and determination of estrogens at Nafion-modified glassy carbon electrode in the presence of cetyltrimethylammonium bromide

被引：140
|
作者：
Hu, SS [1 ]
Wu, KB
Yi, HC
Cui, DF
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] Chinese Acad Sci, Inst Elect, State Key Lab Transducer Technol, Beijing 100080, Peoples R China
来源：
ANALYTICA CHIMICA ACTA | 2002年 / 464卷 / 02期
基金：
中国国家自然科学基金;
关键词：
voltammetry; estrogen; Nafion; chemically modified electrodes; CTAB;
D O I：
10.1016/S0003-2670(02)00496-8
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A method is described for the determination of estrogens (estradiol, estrone and estriol) by stripping voltammetry. These estrogens yield one well-defined oxidation peak at the Nafion-modified glassy carbon electrode in the presence of cetyltrimethylammonium, bromide (CTAB). The peak current is proportional to the concentration of estradiol in the range from 2.5 x 10(-8) to 1.5 x 10(-6) mol/l, and the detection limit is 1 x 10(-9) mol/l after accumulation of 6 min. The total amounts of estrogens in the blood serums were determined using the voltammetric method, and the average recovery was 106.04%. The mechanism of the oxidation of estradiol was investigated by electrochemical techniques and LTV spectra. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：209 / 216
页数：8
相关论文
共 50 条
12345