Electrochemical behavior of parent and photodegradation products of some selected pesticides

被引：8

作者：

Vaz, Carlos M. P. ^{[1
]}

Silva, Paulo R. V., Jr. ^{[1
]}

Prado, Isis ^{[1
]}

Castanho, Giuliane M. ^{[2
]}

Simoes, Fabio R. ^{[3
]}

Machado, Sergio A. S. ^{[4
]}

机构：

[1] Embrapa Instrumentacao Agropecuaria, CP 741, 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

来源：

QUIMICA NOVA | 2008年 / 31卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

pesticides; differential pulse voltammetry; photodegradation;

D O I：

10.1590/S0100-40422008000600007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1310 / 1314

页数：5

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