Electroreduction of dipyridamole at mercury-coated platinum microelectrode
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000300011 |
Resumo: | The electroreduction of Dipyridamole (DIP) was studied in 0.10 mol L-1 phosphate buffer solution (pH 3.0) on a mercury coated platinum microelectrode (Hg-ME), employing cyclic, linear sweep voltammetry and polarography techniques. The similarity between Hg-ME voltammetric profile and the sigmoidal polarographic waves both with a diffusion limited current is showed. Experiments with a hanging mercury drop electrode (HMDE) were performed in parallel to confirm the results obtained with Hg-ME, which indicated that the reduction occurs in two irreversible steps involving two electrons and two protons each step. The limiting diffusion current, concerning the first step, allows estimating the diffusion coefficient for DIP as being equal to 2.04 x 10-5 cm² s-1. |
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Electroreduction of dipyridamole at mercury-coated platinum microelectrodedipyridamoleelectroreductionmercury-coated platinum microelectrodevoltammetryThe electroreduction of Dipyridamole (DIP) was studied in 0.10 mol L-1 phosphate buffer solution (pH 3.0) on a mercury coated platinum microelectrode (Hg-ME), employing cyclic, linear sweep voltammetry and polarography techniques. The similarity between Hg-ME voltammetric profile and the sigmoidal polarographic waves both with a diffusion limited current is showed. Experiments with a hanging mercury drop electrode (HMDE) were performed in parallel to confirm the results obtained with Hg-ME, which indicated that the reduction occurs in two irreversible steps involving two electrons and two protons each step. The limiting diffusion current, concerning the first step, allows estimating the diffusion coefficient for DIP as being equal to 2.04 x 10-5 cm² s-1.Sociedade Brasileira de Química2004-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000300011Journal of the Brazilian Chemical Society v.15 n.3 2004reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532004000300011info:eu-repo/semantics/openAccessToledo,Renata A. deCastilho,MarilzaMazo,Luiz Henriqueeng2004-06-16T00:00:00Zoai:scielo:S0103-50532004000300011Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2004-06-16T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
title |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
spellingShingle |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode Toledo,Renata A. de dipyridamole electroreduction mercury-coated platinum microelectrode voltammetry |
title_short |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
title_full |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
title_fullStr |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
title_full_unstemmed |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
title_sort |
Electroreduction of dipyridamole at mercury-coated platinum microelectrode |
author |
Toledo,Renata A. de |
author_facet |
Toledo,Renata A. de Castilho,Marilza Mazo,Luiz Henrique |
author_role |
author |
author2 |
Castilho,Marilza Mazo,Luiz Henrique |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Toledo,Renata A. de Castilho,Marilza Mazo,Luiz Henrique |
dc.subject.por.fl_str_mv |
dipyridamole electroreduction mercury-coated platinum microelectrode voltammetry |
topic |
dipyridamole electroreduction mercury-coated platinum microelectrode voltammetry |
description |
The electroreduction of Dipyridamole (DIP) was studied in 0.10 mol L-1 phosphate buffer solution (pH 3.0) on a mercury coated platinum microelectrode (Hg-ME), employing cyclic, linear sweep voltammetry and polarography techniques. The similarity between Hg-ME voltammetric profile and the sigmoidal polarographic waves both with a diffusion limited current is showed. Experiments with a hanging mercury drop electrode (HMDE) were performed in parallel to confirm the results obtained with Hg-ME, which indicated that the reduction occurs in two irreversible steps involving two electrons and two protons each step. The limiting diffusion current, concerning the first step, allows estimating the diffusion coefficient for DIP as being equal to 2.04 x 10-5 cm² s-1. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000300011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000300011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532004000300011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.15 n.3 2004 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318165745729536 |