期刊
QUIMICA NOVA
卷 35, 期 10, 页码 1981-1984出版社
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422012001000017
关键词
DSA-Cl-2 (R); electrooxidation; tebuthiuron
ELECTROCHEMICAL OXIDATION OF THE HERBICIDE TEBUTHIURON USING DSA (R)-TYPE ELECTRODE. Tebuthiuron (TBH) is a herbicide widely used in different cultures and known for its toxic effects. Electrochemical methods are promising for removing pollutants such as pesticides. This study showed the degradation of TBH using a DSA (R) anode operated at current densities of 50 to 200 mA cm(-2). Removal presented 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 chromatography revealed that higher concentrations of nitrate and nitrite ions formed with increasing current density.
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