Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents

Autores
Luconi, Marta Olga; Silva, María Fernanda; Olsina, Roberto Antonio; Fernandez, Liliana Patricia
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new micelle-mediated phase separation of metal ions to preconcentrate trace levels of lead as a prior step to its determination by flame atomic spectroscopy has been developed. The methodology is based on the cloud point extraction of lead with PONPE 7.5 in the absence of chelating agent. The chemical variables affecting the sensitivity of the extractive-spectrometric procedure were evaluated in detail, optimised and successfully applied to the determination of lead in saliva samples. Under the optimal conditions, a %E higher than 99.9 was achieved. The proposed method showed linear calibration within the range: 0.6–4 μg ml−1 Pb(II). The sensitivity was 0.053 μg ml−1. The method has been applied to the determination of lead in human saliva. The nature of the extracting species as well as the location of lead in the micelle were studied. The analytical performance of the proposed method clearly satisfies the typical requirements for control processes.
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Silva, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Olsina, Roberto Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Materia
METAL IONS
LEAD
SALIVA
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:11336/101181
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/101181
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agentsLuconi, Marta OlgaSilva, María FernandaOlsina, Roberto AntonioFernandez, Liliana PatriciaMETAL IONSLEADSALIVAhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new micelle-mediated phase separation of metal ions to preconcentrate trace levels of lead as a prior step to its determination by flame atomic spectroscopy has been developed. The methodology is based on the cloud point extraction of lead with PONPE 7.5 in the absence of chelating agent. The chemical variables affecting the sensitivity of the extractive-spectrometric procedure were evaluated in detail, optimised and successfully applied to the determination of lead in saliva samples. Under the optimal conditions, a %E higher than 99.9 was achieved. The proposed method showed linear calibration within the range: 0.6–4 μg ml−1 Pb(II). The sensitivity was 0.053 μg ml−1. The method has been applied to the determination of lead in human saliva. The nature of the extracting species as well as the location of lead in the micelle were studied. The analytical performance of the proposed method clearly satisfies the typical requirements for control processes.Fil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; ArgentinaFil: Silva, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; ArgentinaFil: Olsina, Roberto Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; ArgentinaFil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; ArgentinaElsevier Science2000-01-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/101181Luconi, Marta Olga; Silva, María Fernanda; Olsina, Roberto Antonio; Fernandez, Liliana Patricia; Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents; Elsevier Science; Talanta; 51; 1; 24-1-2000; 123-1290039-9140CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0039914099002520info:eu-repo/semantics/altIdentifier/doi/10.1016/S0039-9140(99)00252-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:30:43Zoai:ri.conicet.gov.ar:11336/101181instacron: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:34982025-10-15 15:30:43.959CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
title Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
spellingShingle Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
Luconi, Marta Olga
METAL IONS
LEAD
SALIVA
title_short Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
title_full Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
title_fullStr Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
title_full_unstemmed Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
title_sort Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents
dc.creator.none.fl_str_mv Luconi, Marta Olga
Silva, María Fernanda
Olsina, Roberto Antonio
Fernandez, Liliana Patricia
author Luconi, Marta Olga
author_facet Luconi, Marta Olga
Silva, María Fernanda
Olsina, Roberto Antonio
Fernandez, Liliana Patricia
author_role author
author2 Silva, María Fernanda
Olsina, Roberto Antonio
Fernandez, Liliana Patricia
author2_role author
author
author
dc.subject.none.fl_str_mv METAL IONS
LEAD
SALIVA
topic METAL IONS
LEAD
SALIVA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new micelle-mediated phase separation of metal ions to preconcentrate trace levels of lead as a prior step to its determination by flame atomic spectroscopy has been developed. The methodology is based on the cloud point extraction of lead with PONPE 7.5 in the absence of chelating agent. The chemical variables affecting the sensitivity of the extractive-spectrometric procedure were evaluated in detail, optimised and successfully applied to the determination of lead in saliva samples. Under the optimal conditions, a %E higher than 99.9 was achieved. The proposed method showed linear calibration within the range: 0.6–4 μg ml−1 Pb(II). The sensitivity was 0.053 μg ml−1. The method has been applied to the determination of lead in human saliva. The nature of the extracting species as well as the location of lead in the micelle were studied. The analytical performance of the proposed method clearly satisfies the typical requirements for control processes.
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Silva, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Olsina, Roberto Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
description A new micelle-mediated phase separation of metal ions to preconcentrate trace levels of lead as a prior step to its determination by flame atomic spectroscopy has been developed. The methodology is based on the cloud point extraction of lead with PONPE 7.5 in the absence of chelating agent. The chemical variables affecting the sensitivity of the extractive-spectrometric procedure were evaluated in detail, optimised and successfully applied to the determination of lead in saliva samples. Under the optimal conditions, a %E higher than 99.9 was achieved. The proposed method showed linear calibration within the range: 0.6–4 μg ml−1 Pb(II). The sensitivity was 0.053 μg ml−1. The method has been applied to the determination of lead in human saliva. The nature of the extracting species as well as the location of lead in the micelle were studied. The analytical performance of the proposed method clearly satisfies the typical requirements for control processes.
publishDate 2000
dc.date.none.fl_str_mv 2000-01-24
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/11336/101181
Luconi, Marta Olga; Silva, María Fernanda; Olsina, Roberto Antonio; Fernandez, Liliana Patricia; Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents; Elsevier Science; Talanta; 51; 1; 24-1-2000; 123-129
0039-9140
CONICET Digital
CONICET
url http://hdl.handle.net/11336/101181
identifier_str_mv Luconi, Marta Olga; Silva, María Fernanda; Olsina, Roberto Antonio; Fernandez, Liliana Patricia; Cloud point extraction of lead in saliva via use of nonionic PONPE 7.5 without added chelating agents; Elsevier Science; Talanta; 51; 1; 24-1-2000; 123-129
0039-9140
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0039914099002520
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0039-9140(99)00252-0
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
_version_ 1846083444847673344
score 13.22299

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