Sonovoltammetric behavior of ascorbic acid and dehydroascorbic acid at glassy carbon electrodes: Analysis using pulsed sonovoltammetry

被引：37

作者：

Compton, RG ^{[1
]}

Matysik, FM ^{[1
]}

机构：

[1] UNIV COIMBRA,DEPT QUIM,P-3049 COIMBRA,PORTUGAL

来源：

ELECTROANALYSIS | 1996年 / 8卷 / 03期

关键词：

voltammetry; ultrasound; ascorbic acid; dehydroascorbic acid;

D O I：

10.1002/elan.1140080304

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of power ultrasound on the voltammetric behavior of ascorbic acid and dehydroascorbic acid at a glassy carbon electrode is described. The voltammetric characteristics of both compounds were found to be modified by ultrasonically formed radicals. In the case of dehydroascorbic acid the single sweep voltammogram shows an anodic signal in the presence of ultrasound which probably results from the formation of an oxidizable radical known to be an intermediate of ascorbic acid oxidation. In the case of ascorbic acid pulsed sonovoltammetry is applied and characterized regarding the time dependence of the current decay and the reliability of its analytical performance. The utility of pulsed sonovoltammetry is demonstrated analyzing a pain killer tablet regarding the ascorbic acid content.

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页码：218 / 222

页数：5

相关论文

共 20 条

[1] PRODUCTION OF A RADICAL IN ELECTROCHEMICAL OXIDATION OF L-ASCORBIC-ACID ON DIFFERENT ELECTRODES [J].

ALDAZ, A ;

ALQUIE, AM .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1973, 47 (03) :532-534

[2] ASCORBIC ACID FREE RADICALS .1. PULSE RADIOLYSIS STUDY OF OPTICAL ABSORPTION AND KINETIC PROPERTIES [J].

BIELSKI, BHJ ;

COMSTOCK, DA ;

BOWEN, RA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (22) :5624-&

[3] ADSORPTION AND KINETICS OF OXIDATION OF ASCORBIC-ACID AT PLATINUM-ELECTRODES [J].

BREZINA, M ;

LOUCKA, T ;

KORYTA, J ;

MARSIKOV.D ;

PRADAC, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1972, 40 (01) :13-&

[4] ELECTROCATALYTIC OXIDATION OF NADH AND ASCORBIC-ACID ON ELECTROCHEMICALLY PRETREATED GLASSY-CARBON ELECTRODES [J].

CENAS, N ;

ROZGAITE, J ;

POCIUS, A ;

KULYS, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 154 (1-2) :121-128

[5] SONO-ELECTROCHEMISTRY - THE OXIDATION OF BIS(CYCLOPENTADIENYL)MOLYBDENUM DICHLORIDE [J].

COMPTON, RG ;

EKLUND, JC ;

PAGE, SD ;

REBBITT, TO .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1995, (03) :389-393

[6] VOLTAMMETRY IN THE PRESENCE OF ULTRASOUND - SONOVOLTAMMETRY AND SURFACE EFFECTS [J].

COMPTON, RG ;

EKLUND, JC ;

PAGE, SD ;

SANDERS, GHW ;

BOOTH, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (47) :12410-12414

[7] SONOVOLTAMMETRY - HETEROGENEOUS ELECTRON-TRANSFER PROCESSES WITH COUPLED ULTRASONICALLY INDUCED CHEMICAL-REACTION - THE SONO-EC REACTION [J].

COMPTON, RG ;

EKLUND, JC ;

PAGE, SD .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (12) :4211-4214

[8] HETEROGENEOUS MECHANISMS OF THE OXIDATION OF CATECHOLS AND ASCORBIC-ACID AT CARBON ELECTRODES [J].

DEAKIN, MR ;

KOVACH, PM ;

STUTTS, KJ ;

WIGHTMAN, RM .

ANALYTICAL CHEMISTRY, 1986, 58 (07) :1474-1480

[9]

Dryhurst G., 1982, BIOL ELECTROCHEMISTR, V1, P256

[10] VACUUM HEAT-TREATMENT FOR ACTIVATION OF GLASSY-CARBON ELECTRODES [J].

FAGAN, DT ;

HU, IF ;

KUWANA, T .

ANALYTICAL CHEMISTRY, 1985, 57 (14) :2759-2763