Iodide-selective membrane electrode based on salophen complex of cobalt (III)
Autor(a) principal: | |
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Data de Publicação: | 2005 |
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=S0103-50532005000400013 |
Resumo: | A highly selective PVC membrane electrode based on a cobalt-salophen complex was prepared. The sensor displays an anti-Hofmeister selectivity sequence with a preference for iodide ion over many common anions. The electrode has a linear dynamic range between 5.0×10-7 to 1.0×10-1 mol L-1, with a Nernstian slope of -58.9 mV decade-1 and a detection limit of 3.0×10-7 mol L-1. The working pH range of the sensor is 3.1-9.8. It exhibits of a fast as 15 s and has a lifetime of about 2 months. The selectivity coefficients for the proposed electrode were improved for some interferences, when compared with those of available iodide membrane electrode. The proposed electrode was successfully applied for the direct determination of iodide in edible salt and as an indicator electrode in potentiometric titration of I- against Ag+. |
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Journal of the Brazilian Chemical Society (Online) |
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Iodide-selective membrane electrode based on salophen complex of cobalt (III)iodide ion-selective electrodeanti-Hofmeistercobalt-salophen complexpotentiometryanion sensorA highly selective PVC membrane electrode based on a cobalt-salophen complex was prepared. The sensor displays an anti-Hofmeister selectivity sequence with a preference for iodide ion over many common anions. The electrode has a linear dynamic range between 5.0×10-7 to 1.0×10-1 mol L-1, with a Nernstian slope of -58.9 mV decade-1 and a detection limit of 3.0×10-7 mol L-1. The working pH range of the sensor is 3.1-9.8. It exhibits of a fast as 15 s and has a lifetime of about 2 months. The selectivity coefficients for the proposed electrode were improved for some interferences, when compared with those of available iodide membrane electrode. The proposed electrode was successfully applied for the direct determination of iodide in edible salt and as an indicator electrode in potentiometric titration of I- against Ag+.Sociedade Brasileira de Química2005-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000400013Journal of the Brazilian Chemical Society v.16 n.3b 2005reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532005000400013info:eu-repo/semantics/openAccessZare,Hamid R.Memarzadeh,FarkhondehGorji,AlirezaArdakani,Mohammad Mazloumeng2005-08-09T00:00:00Zoai:scielo:S0103-50532005000400013Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2005-08-09T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
title |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
spellingShingle |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) Zare,Hamid R. iodide ion-selective electrode anti-Hofmeister cobalt-salophen complex potentiometry anion sensor |
title_short |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
title_full |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
title_fullStr |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
title_full_unstemmed |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
title_sort |
Iodide-selective membrane electrode based on salophen complex of cobalt (III) |
author |
Zare,Hamid R. |
author_facet |
Zare,Hamid R. Memarzadeh,Farkhondeh Gorji,Alireza Ardakani,Mohammad Mazloum |
author_role |
author |
author2 |
Memarzadeh,Farkhondeh Gorji,Alireza Ardakani,Mohammad Mazloum |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Zare,Hamid R. Memarzadeh,Farkhondeh Gorji,Alireza Ardakani,Mohammad Mazloum |
dc.subject.por.fl_str_mv |
iodide ion-selective electrode anti-Hofmeister cobalt-salophen complex potentiometry anion sensor |
topic |
iodide ion-selective electrode anti-Hofmeister cobalt-salophen complex potentiometry anion sensor |
description |
A highly selective PVC membrane electrode based on a cobalt-salophen complex was prepared. The sensor displays an anti-Hofmeister selectivity sequence with a preference for iodide ion over many common anions. The electrode has a linear dynamic range between 5.0×10-7 to 1.0×10-1 mol L-1, with a Nernstian slope of -58.9 mV decade-1 and a detection limit of 3.0×10-7 mol L-1. The working pH range of the sensor is 3.1-9.8. It exhibits of a fast as 15 s and has a lifetime of about 2 months. The selectivity coefficients for the proposed electrode were improved for some interferences, when compared with those of available iodide membrane electrode. The proposed electrode was successfully applied for the direct determination of iodide in edible salt and as an indicator electrode in potentiometric titration of I- against Ag+. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-06-01 |
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=S0103-50532005000400013 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000400013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532005000400013 |
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.16 n.3b 2005 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_ |
1750318166218637312 |