Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole

Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole

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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Bibliographic Details
Main Authors: Pereira,Francisco C., Stradiotto,Nelson R., Zanoni,Maria Valnice B.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2001
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000200013
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spelling oai:scielo:S0103-505320010002000132001-07-02Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazolePereira,Francisco C.Stradiotto,Nelson R.Zanoni,Maria Valnice B. clotrimazole cyclic voltammetry differential pulse polarography cathodic stripping voltammetry 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.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.12 n.2 20012001-04-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000200013en10.1590/S0103-50532001000200013
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Pereira,Francisco C.
Stradiotto,Nelson R.
Zanoni,Maria Valnice B.
spellingShingle Pereira,Francisco C.
Stradiotto,Nelson R.
Zanoni,Maria Valnice B.
Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
author_facet Pereira,Francisco C.
Stradiotto,Nelson R.
Zanoni,Maria Valnice B.
author_sort Pereira,Francisco C.
title Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
title_short Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
title_full Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
title_fullStr Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
title_full_unstemmed Electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
title_sort electrochemical reduction and cathodic stripping voltammetric determination of clotrimazole
description 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.
publisher Sociedade Brasileira de Química
publishDate 2001
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000200013
work_keys_str_mv AT pereirafranciscoc electrochemicalreductionandcathodicstrippingvoltammetricdeterminationofclotrimazole
AT stradiottonelsonr electrochemicalreductionandcathodicstrippingvoltammetricdeterminationofclotrimazole
AT zanonimariavalniceb electrochemicalreductionandcathodicstrippingvoltammetricdeterminationofclotrimazole
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