INVITRO MEASUREMENT OF DOPAMINE CONCENTRATION WITH CARBON-FIBER ELECTRODE

被引：50

作者：

AKIYAMA, A

KATO, T

ISHII, K

YASUDA, E

机构：

[1] TOKYO INST TECHNOL, GRAD SCH NAGATSUTA, DEPT LIFE CHEM, YOKOHAMA, KANAGAWA 227, JAPAN

[2] TOKYO INST TECHNOL, ENGN MAT RES LAB, YOKOHAMA, KANAGAWA 227, JAPAN

来源：

ANALYTICAL CHEMISTRY | 1985年 / 57卷 / 08期

关键词：

D O I：

10.1021/ac00285a006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Microcomputer-controlled potentiostatic pulse polarization techniques were applied to the analysis of dopamine with carbon fiber electrodes. By the introduction of the electrochemical treatment before every measuring pulse, the sensitivity and reproducibility were remarkably improved. Different carbon fibers gave different stability and sensitivity and HTA-7 was preferred for analytical purposes. The diameter of the electrode was 7 .mu.m. The detection limit was < 2 nM. The separation of dopamine from other catechols and indoles was satisfactory. The adsorption of dopamine at the carbon fiber surface was assumed and the isotherm was discussed.

引用

页码：1518 / 1522

页数：5

共 15 条

[1] DIFFERENTIAL PULSE VOLTAMMETRY IN THE ANESTHETIZED RAT - IDENTIFICATION OF ASCORBIC-ACID, CATECHOL AND INDOLEAMINE OXIDATION PEAKS IN THE STRIATUM AND FRONTAL-CORTEX [J].