Estudo do comportamento eletroquímico do herbicida ametrina utilizando a técnica de voltametria de onda quadrada

M. F. Cabral; D. de Souza; C. R. Alves; S. A. S. Machado

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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Square wave voltammetric study of the electrochemical behavior of the herbicide ametryne

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Author(s):	M. F. Cabral ^[1] ; D. de Souza ^[2] ; C. R. Alves ^[3] ; S. A. S. Machado ^[4] Total Authors: 4
Affiliation:	^[1] Universidade Estadual do Ceara. Ambiental Centro de Ciências e Tecnologia - Brasil ^[2] USP. Instituto de Química de São Carlos - Brasil ^[3] Universidade Estadual do Ceara. Ambiental Centro de Ciências e Tecnologia - Brasil ^[4] USP. Instituto de Química de São Carlos - Brasil Total Affiliations: 4
Document type:	Journal article
Source:	Eclética Química; v. 28, n. 2, p. 41-47, 2003-00-00.
Abstract
The determination of the herbicide ametryne in acid solution was performed using square wave voltammetry and a static drop mercury electrode. The electroredution reaction proceeds through a completely irreversible mechanism with the diffusion of the electroactive specie being the rate determining step. It was observed a previous protonation of the reagent molecule followed by the transference of two electrons. The linearity of peak current with concentration allows to calculate a detection limit of 0,1 mg L-1 (0,1 ppb). This value is adequate for the analysis of herbicide contamination (e.g., in drinking water). (AU)

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