Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.

Autores
Ramírez, Silvana Andrea María; Gordillo, Gabriel Jorge
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Electroanalysis offers an interesting tool for palladium quantification by using adsorptive stripping voltammetry of Pd-dimethylglioxime complex on mercury . Here we show that complexation kinetics and solubility in the homogeneous phase, in addition to surface concentration, are relevant analytical aspects to be considered. Complexation kinetics is first order in both Pd(II) and the ligand (k = 15 s-1M-1 ). This determines the chemical equilibration time after each metal addition: for example when using 1 x 10-4 M H2DMG a non negligible chemical equilibration time ca. 1 hour should be considered. The upper limit of the linear range is determined by two factors: complex solubility in the solution (ca. 2.5 μM) and surface concentration. The latter should develop a redox charge lower than 30 μC cm-2 .
Fil: Ramírez, Silvana Andrea María. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina
Fil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
Palladium
Dimethylglyoxime
Adsorption
Stripping Voltammetry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/71756
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.Ramírez, Silvana Andrea MaríaGordillo, Gabriel JorgePalladiumDimethylglyoximeAdsorptionStripping Voltammetryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Electroanalysis offers an interesting tool for palladium quantification by using adsorptive stripping voltammetry of Pd-dimethylglioxime complex on mercury . Here we show that complexation kinetics and solubility in the homogeneous phase, in addition to surface concentration, are relevant analytical aspects to be considered. Complexation kinetics is first order in both Pd(II) and the ligand (k = 15 s-1M-1 ). This determines the chemical equilibration time after each metal addition: for example when using 1 x 10-4 M H2DMG a non negligible chemical equilibration time ca. 1 hour should be considered. The upper limit of the linear range is determined by two factors: complex solubility in the solution (ca. 2.5 μM) and surface concentration. The latter should develop a redox charge lower than 30 μC cm-2 .Fil: Ramírez, Silvana Andrea María. Universidad Nacional de General Sarmiento. Instituto de Ciencias; ArgentinaFil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaSimplex Academic Publishers2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71756Ramírez, Silvana Andrea María; Gordillo, Gabriel Jorge; Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.; Simplex Academic Publishers; Global Journal of Analytical Chemistry; 1; 1; 7-2010; 59-670976-55140976-6030CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.cognizure.com/abstract.aspx?p=101637215info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:07Zoai:ri.conicet.gov.ar:11336/71756instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:48:07.88CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
title Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
spellingShingle Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
Ramírez, Silvana Andrea María
Palladium
Dimethylglyoxime
Adsorption
Stripping Voltammetry
title_short Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
title_full Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
title_fullStr Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
title_full_unstemmed Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
title_sort Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.
dc.creator.none.fl_str_mv Ramírez, Silvana Andrea María
Gordillo, Gabriel Jorge
author Ramírez, Silvana Andrea María
author_facet Ramírez, Silvana Andrea María
Gordillo, Gabriel Jorge
author_role author
author2 Gordillo, Gabriel Jorge
author2_role author
dc.subject.none.fl_str_mv Palladium
Dimethylglyoxime
Adsorption
Stripping Voltammetry
topic Palladium
Dimethylglyoxime
Adsorption
Stripping Voltammetry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Electroanalysis offers an interesting tool for palladium quantification by using adsorptive stripping voltammetry of Pd-dimethylglioxime complex on mercury . Here we show that complexation kinetics and solubility in the homogeneous phase, in addition to surface concentration, are relevant analytical aspects to be considered. Complexation kinetics is first order in both Pd(II) and the ligand (k = 15 s-1M-1 ). This determines the chemical equilibration time after each metal addition: for example when using 1 x 10-4 M H2DMG a non negligible chemical equilibration time ca. 1 hour should be considered. The upper limit of the linear range is determined by two factors: complex solubility in the solution (ca. 2.5 μM) and surface concentration. The latter should develop a redox charge lower than 30 μC cm-2 .
Fil: Ramírez, Silvana Andrea María. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina
Fil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description Electroanalysis offers an interesting tool for palladium quantification by using adsorptive stripping voltammetry of Pd-dimethylglioxime complex on mercury . Here we show that complexation kinetics and solubility in the homogeneous phase, in addition to surface concentration, are relevant analytical aspects to be considered. Complexation kinetics is first order in both Pd(II) and the ligand (k = 15 s-1M-1 ). This determines the chemical equilibration time after each metal addition: for example when using 1 x 10-4 M H2DMG a non negligible chemical equilibration time ca. 1 hour should be considered. The upper limit of the linear range is determined by two factors: complex solubility in the solution (ca. 2.5 μM) and surface concentration. The latter should develop a redox charge lower than 30 μC cm-2 .
publishDate 2010
dc.date.none.fl_str_mv 2010-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/71756
Ramírez, Silvana Andrea María; Gordillo, Gabriel Jorge; Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.; Simplex Academic Publishers; Global Journal of Analytical Chemistry; 1; 1; 7-2010; 59-67
0976-5514
0976-6030
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71756
identifier_str_mv Ramírez, Silvana Andrea María; Gordillo, Gabriel Jorge; Complexation, adsorption and reduction of palladium-dimethylglyoxime: analytical considerations.; Simplex Academic Publishers; Global Journal of Analytical Chemistry; 1; 1; 7-2010; 59-67
0976-5514
0976-6030
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.cognizure.com/abstract.aspx?p=101637215
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Simplex Academic Publishers
publisher.none.fl_str_mv Simplex Academic Publishers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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