Zeolite-modified carbon paste electrode for selective monitoring of dopamine

被引：159
|
作者：
Wang, J
Walcarius, A
机构：
[1] Dept. of Chemistry and Biochemistry, New Mexico State University, Las Cruces
[2] Fac. Univ. Notre-Dame de la Paix, Namur
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1996年 / 407卷 / 1-2期
关键词：
zeolite-modified electrode; dopamine; ascorbic acid; selectivity; carbon paste;
D O I：
10.1016/0022-0728(95)04488-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Zeolite-Y-modified carbon paste electrodes display a preferential incorporation of the neurotransmitters dopamine and epinephrine, while rejecting the anionic ascorbate species. The greatly enhanced selectivity accrued from the ion-exchange properties of the zeolite particles is demonstrated using cyclic voltammetric, batch amperometric and flow-injection voltammetric experiments. Experimental parameters affecting the uptake of dopamine, including the solution pH and ionic strength or zeolite loading, are explored. The attractive properties of zeolite-modified electrodes could be valuable for in-vivo brain electrochemistry.
引用
收藏
页码：183 / 187
页数：5
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