Publicação: Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
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Soc Brasileira Quimica
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Resumo
The reduction of clotrimazole at a mercury electrode, in phosphate buffer, pH>6, involves a reversible one-electron process. The electrochemical process presents a large contribution from adsorption effects. For the differential pulse polarographic determination the addition of Triton X-100 is recommended. Clotrimazole can be determined by cathodic stripping voltammetry at 50 ng mL(-1) level when pre-accumulated for 3 min at an accumulation potential of -0.20 V. The proposed method is applied successfully for the determination of clotrimazole in a commercial formulation.
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clotrimazole, cyclic voltammetry, differential pulse polarography, cathodic stripping voltammetry
Idioma
Inglês
Como citar
Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 12, n. 2, p. 202-207, 2001.
