Electrochemical oxidation of the herbicide tebuthiuron using DSA®-type electrode

Quimica nova

Alves, Suellen A.¹  Ferreira, Tanare C. R.¹  Lanza, Marcos R. V.¹ 

[1] Universidade de São Paulo, São Carlos, Brasil

关键词: DSA-Cl2®;    electrooxidation;    tebuthiuron.;   

DOI  :  10.1590/S0100-40422012001000017

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Tebuthiuron (TBH)is a herbicide widely used in different cultures and known for its toxiceffects. Electrochemical methods are promising for removing pollutants suchas pesticides. This study showed the degradation of TBH using a DSA®anode operated at current densities of 50 to 200 mA cm-2. Removalpresented pseudo-first order kinetics while high-pressure liquid chromatography(UV detection) showed two peaks, ascribed to degradation intermediates.The maximum percentage of total organic carbon removed was 12.9%. Ion chromatographyrevealed that higher concentrations of nitrate and nitrite ions formed withincreasing current density.

【 授权许可】

CC BY