Sequential determination of lead and cobalt in tap water and foods samples by fluorescence

Autores
Talio, María Carolina; Alesso, Magdalena; Acosta, Maria Gimena; Acosta, Mariano; Fernandez, Liliana Patricia
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a new procedure was developed for the separation and preconcentration of lead(II) and cobalt(II) in several water and foods samples. Complexes of metal ions with 8-hydroxyquinolein (8-HQ) were formed in aqueous solution. The proposed methodology is based on the preconcentration/separation of Pb(II) by solid-phase extraction using paper filter, followed by spectrofluorimetric determination of both metals, on the solid support and the filtered aqueous solution, respectively. The solid surfase fluorescence determination was carried out at λem = 455 nm (λex = 385 nm) for Pb(II)-8-HQ complex and the fluorescence of Co(II)-8-HQ was determined in aqueous solution using λem = 355 nm (λex = 225 nm). The calibration graphs are linears in the range 0.14 to 8.03 104 μg L−1 and 7.3× 10−2 to 4.12 × 103 μg L−1, for Pb(II) and Co(II), respectively, with a detection limit of 4.3 10−2 and 2.19 10−2 μg L−1 (S/N = 3). The developed methodology showed good sensitivity and adequate selectivity and it was successfully applied to the determination of trace amounts of lead and cobalt in tap waters belonging of different regions of Argentina and foods samples (milk powder, express coffee, cocoa powder) with satisfactory results. The new methodology was validated by electrothermal atomic absorption spectroscopy with adequate agreement. The proposed methodology represents a novel application of fluorescence to Pb(II) and Co(II) quantification with sensitivity and accuracy similar to atomic spectroscopies.
Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Acosta, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Materia
Lead
Cobalt
8-Hydroxyquinoline
Luminescence
Tap Water
Food
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5763
Acceder
id CONICETDig_0e739c9aaa04c0a1439abc4af32f07ab
oai_identifier_str oai:ri.conicet.gov.ar:11336/5763
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Sequential determination of lead and cobalt in tap water and foods samples by fluorescenceTalio, María CarolinaAlesso, MagdalenaAcosta, Maria GimenaAcosta, MarianoFernandez, Liliana PatriciaLeadCobalt8-HydroxyquinolineLuminescenceTap WaterFoodhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this work, a new procedure was developed for the separation and preconcentration of lead(II) and cobalt(II) in several water and foods samples. Complexes of metal ions with 8-hydroxyquinolein (8-HQ) were formed in aqueous solution. The proposed methodology is based on the preconcentration/separation of Pb(II) by solid-phase extraction using paper filter, followed by spectrofluorimetric determination of both metals, on the solid support and the filtered aqueous solution, respectively. The solid surfase fluorescence determination was carried out at λem = 455 nm (λex = 385 nm) for Pb(II)-8-HQ complex and the fluorescence of Co(II)-8-HQ was determined in aqueous solution using λem = 355 nm (λex = 225 nm). The calibration graphs are linears in the range 0.14 to 8.03 104 μg L−1 and 7.3× 10−2 to 4.12 × 103 μg L−1, for Pb(II) and Co(II), respectively, with a detection limit of 4.3 10−2 and 2.19 10−2 μg L−1 (S/N = 3). The developed methodology showed good sensitivity and adequate selectivity and it was successfully applied to the determination of trace amounts of lead and cobalt in tap waters belonging of different regions of Argentina and foods samples (milk powder, express coffee, cocoa powder) with satisfactory results. The new methodology was validated by electrothermal atomic absorption spectroscopy with adequate agreement. The proposed methodology represents a novel application of fluorescence to Pb(II) and Co(II) quantification with sensitivity and accuracy similar to atomic spectroscopies.Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; ArgentinaFil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Acosta, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; ArgentinaElsevier2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5763Talio, María Carolina; Alesso, Magdalena; Acosta, Maria Gimena; Acosta, Mariano; Fernandez, Liliana Patricia; Sequential determination of lead and cobalt in tap water and foods samples by fluorescence; Elsevier; Talanta; 127; 9-2014; 244-2490039-9140enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0039914014002987info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2014.04.020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:16Zoai:ri.conicet.gov.ar:11336/5763instacron: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 09:44:16.953CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
title Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
spellingShingle Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
Talio, María Carolina
Lead
Cobalt
8-Hydroxyquinoline
Luminescence
Tap Water
Food
title_short Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
title_full Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
title_fullStr Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
title_full_unstemmed Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
title_sort Sequential determination of lead and cobalt in tap water and foods samples by fluorescence
dc.creator.none.fl_str_mv Talio, María Carolina
Alesso, Magdalena
Acosta, Maria Gimena
Acosta, Mariano
Fernandez, Liliana Patricia
author Talio, María Carolina
author_facet Talio, María Carolina
Alesso, Magdalena
Acosta, Maria Gimena
Acosta, Mariano
Fernandez, Liliana Patricia
author_role author
author2 Alesso, Magdalena
Acosta, Maria Gimena
Acosta, Mariano
Fernandez, Liliana Patricia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Lead
Cobalt
8-Hydroxyquinoline
Luminescence
Tap Water
Food
topic Lead
Cobalt
8-Hydroxyquinoline
Luminescence
Tap Water
Food
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work, a new procedure was developed for the separation and preconcentration of lead(II) and cobalt(II) in several water and foods samples. Complexes of metal ions with 8-hydroxyquinolein (8-HQ) were formed in aqueous solution. The proposed methodology is based on the preconcentration/separation of Pb(II) by solid-phase extraction using paper filter, followed by spectrofluorimetric determination of both metals, on the solid support and the filtered aqueous solution, respectively. The solid surfase fluorescence determination was carried out at λem = 455 nm (λex = 385 nm) for Pb(II)-8-HQ complex and the fluorescence of Co(II)-8-HQ was determined in aqueous solution using λem = 355 nm (λex = 225 nm). The calibration graphs are linears in the range 0.14 to 8.03 104 μg L−1 and 7.3× 10−2 to 4.12 × 103 μg L−1, for Pb(II) and Co(II), respectively, with a detection limit of 4.3 10−2 and 2.19 10−2 μg L−1 (S/N = 3). The developed methodology showed good sensitivity and adequate selectivity and it was successfully applied to the determination of trace amounts of lead and cobalt in tap waters belonging of different regions of Argentina and foods samples (milk powder, express coffee, cocoa powder) with satisfactory results. The new methodology was validated by electrothermal atomic absorption spectroscopy with adequate agreement. The proposed methodology represents a novel application of fluorescence to Pb(II) and Co(II) quantification with sensitivity and accuracy similar to atomic spectroscopies.
Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Acosta, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
description In this work, a new procedure was developed for the separation and preconcentration of lead(II) and cobalt(II) in several water and foods samples. Complexes of metal ions with 8-hydroxyquinolein (8-HQ) were formed in aqueous solution. The proposed methodology is based on the preconcentration/separation of Pb(II) by solid-phase extraction using paper filter, followed by spectrofluorimetric determination of both metals, on the solid support and the filtered aqueous solution, respectively. The solid surfase fluorescence determination was carried out at λem = 455 nm (λex = 385 nm) for Pb(II)-8-HQ complex and the fluorescence of Co(II)-8-HQ was determined in aqueous solution using λem = 355 nm (λex = 225 nm). The calibration graphs are linears in the range 0.14 to 8.03 104 μg L−1 and 7.3× 10−2 to 4.12 × 103 μg L−1, for Pb(II) and Co(II), respectively, with a detection limit of 4.3 10−2 and 2.19 10−2 μg L−1 (S/N = 3). The developed methodology showed good sensitivity and adequate selectivity and it was successfully applied to the determination of trace amounts of lead and cobalt in tap waters belonging of different regions of Argentina and foods samples (milk powder, express coffee, cocoa powder) with satisfactory results. The new methodology was validated by electrothermal atomic absorption spectroscopy with adequate agreement. The proposed methodology represents a novel application of fluorescence to Pb(II) and Co(II) quantification with sensitivity and accuracy similar to atomic spectroscopies.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
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/11336/5763
Talio, María Carolina; Alesso, Magdalena; Acosta, Maria Gimena; Acosta, Mariano; Fernandez, Liliana Patricia; Sequential determination of lead and cobalt in tap water and foods samples by fluorescence; Elsevier; Talanta; 127; 9-2014; 244-249
0039-9140
url http://hdl.handle.net/11336/5763
identifier_str_mv Talio, María Carolina; Alesso, Magdalena; Acosta, Maria Gimena; Acosta, Mariano; Fernandez, Liliana Patricia; Sequential determination of lead and cobalt in tap water and foods samples by fluorescence; Elsevier; Talanta; 127; 9-2014; 244-249
0039-9140
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0039914014002987
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2014.04.020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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