Electrochemical behavior of parent and photodegradation products of some selected pesticides

Autor(es)

Vaz, Carlos M. P. ^[1] ; Silva, Jr., Paulo R. V. ^[1] ; Prado, Isis ^[1] ; Castanho, Giuliane M. ^[2] ; Simoes, Fabio R. ^[3] ; Machado, Sergio A. S. ^[4]

Afiliação do(s) autor(es)

^[1] Embrapa Instrumentacao Agropecuaria, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Sao Paulo, Ctr Energia Nucl Agr, BR-13400970 Piracicaba, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Quim, BR-13560970 Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Química Nova; v. 31, n. 6, p. 1310-1314, 2008.
• Citações Web of Science: 8

Resumo

Electrochemical behavior of pesticides is extensively studied, but little attention has been given to the study of their degradation products (by-products) by electrochemical methods. However, the degradation products of pesticides can be even more toxic then the parent products and such studies should be encouraged. Therefore, the objective of this work was to evaluate the electroactivity of by-products of imazaquin, methylparathion, bentazon and atrazine, generated by UV irradiation and measured using cyclic and differential pulse voltammetry and UV-visible absorption spectrophotometry. Results have shown that several by-products exhibit electroactivity, allowing, in some cases, the simultaneous determination of both parent and degradation products. (AU)

• Processo FAPESP: 01/13745-7 - Desenvolvimento de sensores poliméricos para aplicações na agroindústria e meio ambiente
• Beneficiário: Luiz Henrique Capparelli Mattoso
• Modalidade de apoio: Auxílio à Pesquisa - Temático