SQUARE-WAVE ANODIC-STRIPPING VOLTAMMETRY IN STATIONARY AND FLOWING SOLUTION - A COMPARATIVE-STUDY

被引：27

作者：

BRETT, CMA ^{[1
]}

LIMA, JLFC ^{[1
]}

GARCIA, MBQ ^{[1
]}

机构：

[1] UNIV PORTO, FAC FARM, DEPT QUIM FIS, P-4000 OPORTO, PORTUGAL

来源：

ANALYST | 1994年 / 119卷 / 06期

关键词：

SQUARE-WAVE ANODIC STRIPPING VOLTAMMETRY; MERCURY THIN-FILM ELECTRODE; WALL-JET ELECTRODE; LEAD; CADMIUM;

D O I：

10.1039/an9941901229

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A comparison has been made between square-wave anodic stripping voltammetry (SWASV) at a stationary, mercury thin-film electrode and at a wall-jet mercury thin-film electrode in flowing solution using cadmium(II) and lead(II) as test species. Mercury thin films were prepared on glassy carbon electrode substrates. The effects of square wave amplitude and frequency on the peak current and peak potential in the determination step were studied, and these parameters optimized. Deposition time was varied, and the effect of flow rate in flowing solution investigated. Practical detection limits were found to be 10(-8) mol l(-1) at stationary electrodes and 2 x 10(-9) mol l(-1) at wall-jet electrodes. It was found that SWASV gives good results in the presence and absence of dissolved oxygen for both analysis modes, which augurs well for its future application in dow systems, and particularly at wall-jet electrodes.

引用

页码：1229 / 1233

页数：5

共 15 条

[1]

[Anonymous], 1987, ANALYST, V112, P199

[2] VOLTAMMETRIC STUDIES AND STRIPPING VOLTAMMETRY OF MN(II) AT THE WALL-JET RING-DISC ELECTRODE [J].

BRETT, CMA ;

NETO, MMPM .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 258 (02) :345-355

[3] DC ANODIC-STRIPPING VOLTAMMETRY AT MERCURY THIN-FILM ELECTRODES - THE SHAPE AND POSITION OF THE STRIPPING PEAKS AT HYDRODYNAMIC ELECTRODES [J].

BRETT, CMA ;

BRETT, AMCFO .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 262 (1-2) :83-95

[4] ADSORPTIVE STRIPPING VOLTAMMETRY OF COBALT AND NICKEL IN FLOW SYSTEMS AT WALL-JET ELECTRODES [J].

BRETT, CMA ;

BRETT, AMCFO ;

PEREIRA, JLC .

ELECTROANALYSIS, 1991, 3 (07) :683-689

[5] DIFFERENTIAL PULSE ANODIC-STRIPPING VOLTAMMETRY AT THE WALL JET ELECTRODE [J].

GUNASINGHAM, H ;

ANG, KP ;

NGO, CC ;

THIAK, PC .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 198 (01) :27-35

[6]

GUNASINGHAM H, 1989, ELECTROANALYTICAL CH, V16, P89

[7] SQUARE-WAVE VOLTAMMETRY - A RAPID AND RELIABLE DETERMINATION METHOD OF ZN, CD, PB, CU, NI AND CO IN BIOLOGICAL AND ENVIRONMENTAL-SAMPLES [J].

OSTAPCZUK, P ;

VALENTA, P ;

NURNBERG, HW .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 214 (1-2) :51-64

[8] VOLTAMMETRY FOR THE FUTURE [J].

OSTERYOUNG, J .

ACCOUNTS OF CHEMICAL RESEARCH, 1993, 26 (03) :77-83

[9]

Osteryoung J., 1986, ELECTROANALYTICAL CH, V14

[10]

Ruzicka J., 1988, FLOW INJECTION ANAL, Vsecond

← 1 2 →