Electrochemical Behaviour and Square Wave Voltammetry of the Rice Herbicides Molinate, Bensulfuron-Methyl, Mefenacet and Thiobencarb

Cyclic, differential pulse and square wave voltammetry were applied to develop an electroanalytical procedure for the determination of a group of herbicides used to treat rice crops: molinate, bensul-ruron-methyl, mefenacet and thiobencarb. The oxidation mechanism causes adsorption problems and cons...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of environmental analytical chemistry Vol. 75; no. 1-2; pp. 149 - 157
Main Authors Garrido, E. Manuela, Lima, Josél Costa, Delerue-matos, Cristina M., Brett, Ana Maria Oliveira
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.06.1999
Subjects
bensulfuron-methyl
herbicides
mefenacet
Molinate
square wave voltammetry
thiobencarb
Online AccessGet full text

Cover

More Information
Summary:Cyclic, differential pulse and square wave voltammetry were applied to develop an electroanalytical procedure for the determination of a group of herbicides used to treat rice crops: molinate, bensul-ruron-methyl, mefenacet and thiobencarb. The oxidation mechanism causes adsorption problems and consequent poisoning of the electrode surface by the products of the electrochemical reaction. Parameters such as pH, frequency and electrochemical electrode surface treatment were optimized. The analytical methodology developed using square wave voltammetry was applied to the determination of molinate and bensulfuron-methyl in simple or mixed commercial products.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067319908047307