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Química Nova

versión impresa ISSN 0100-4042

Resumen

GARBELLINI, Gustavo S.; PEDROSA, Valber A.; SALAZAR-BANDA, Giancarlo R.  y  AVACA, Luis A.. Electroanalytical methodologies for the determination of triazine herbiacides by square wave voltammetry and deconvolution techniques. Quím. Nova [online]. 2007, vol.30, n.8, pp. 2025-2034. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422007000800039.

This work describes the development of electroanalytical methodologies for the determination of atrazine, ametrine and simazine by square wave voltammetry on a mercury electrode. For pure atrazine and pure ametrine, the detection limits (DL) were 3.7 and 4.3 µg L-1, respectively, while they increased to 4.8 and 6.5 µg L-1 in the presence of 3.0 x 10-6 mol L-1 of the other component (a mathematical deconvolution program was used in the mixture cases). The voltammetric response for simazine could not be separated from that of atrazine and measurements were carried out only in pure simazine solutions (DL: 7.5 µg L-1).

Palabras llave : triazines; square wave voltammetry; mercury electrode.

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