Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology

Autores
Talio, María Carolina; Luconi, Marta Olga; Masi, Adriana Noemi; Fernandez, Liliana Patricia
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A highly sensitive micelle-mediated extraction methodology for the preconcentration and determination of trace levels of cadmium by molecular fluorescence has been developed. Metal was complexed with o-phenanthroline (o-phen) and eosin (eo) at pH 7.6 in buffer Tris medium and quantitatively extracted into a small volume of surfactant-rich phase of PONPE 7.5 after centrifugating. The chemical variables affecting cloud point extraction (CPE) were evaluated and optimized. The RSD for six replicates of cadmium determinations at 0.84 μg L-1 level was 1.17%. The linearity range using the preconcentration system was between 2.79 × 10-3 μg L-1 and 2.81 μg L-1 with a correlation coefficient of 0.99. Under the optimal conditions, it obtained a LOD of 8.38 × 10-4 μg L-1 and LOQ of 2.79 × 10-3 μg L-1. The method presented good sensitivity and selectivity and was applied to the determination of trace amounts of cadmium in commercially bottled mineral water, tap water and water well samples with satisfactory results. The proposed method is an innovative application of CPE-luminescence to metal analysis comparable in sensitivity and accuracy with atomic spectroscopies.
Fil: Talio, María Carolina. 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
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis; Argentina
Fil: Masi, Adriana Noemi. 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
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
Materia
CADMIUM
CLOUD POINT EXTRACTION
DRINKING WATER
MOLECULAR FLUORESCENCE
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:11336/92843
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/92843
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodologyTalio, María CarolinaLuconi, Marta OlgaMasi, Adriana NoemiFernandez, Liliana PatriciaCADMIUMCLOUD POINT EXTRACTIONDRINKING WATERMOLECULAR FLUORESCENCEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A highly sensitive micelle-mediated extraction methodology for the preconcentration and determination of trace levels of cadmium by molecular fluorescence has been developed. Metal was complexed with o-phenanthroline (o-phen) and eosin (eo) at pH 7.6 in buffer Tris medium and quantitatively extracted into a small volume of surfactant-rich phase of PONPE 7.5 after centrifugating. The chemical variables affecting cloud point extraction (CPE) were evaluated and optimized. The RSD for six replicates of cadmium determinations at 0.84 μg L-1 level was 1.17%. The linearity range using the preconcentration system was between 2.79 × 10-3 μg L-1 and 2.81 μg L-1 with a correlation coefficient of 0.99. Under the optimal conditions, it obtained a LOD of 8.38 × 10-4 μg L-1 and LOQ of 2.79 × 10-3 μg L-1. The method presented good sensitivity and selectivity and was applied to the determination of trace amounts of cadmium in commercially bottled mineral water, tap water and water well samples with satisfactory results. The proposed method is an innovative application of CPE-luminescence to metal analysis comparable in sensitivity and accuracy with atomic spectroscopies.Fil: Talio, María Carolina. 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; ArgentinaFil: Luconi, Marta Olga. Universidad Nacional de San Luis; ArgentinaFil: Masi, Adriana Noemi. 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; 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; ArgentinaElsevier Science2009-10info: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/11336/92843Talio, María Carolina; Luconi, Marta Olga; Masi, Adriana Noemi; Fernandez, Liliana Patricia; Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology; Elsevier Science; Journal of Hazardous Materials; 170; 1; 10-2009; 272-2770304-3894CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jhazmat.2009.04.101info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304389409006839info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:01:10Zoai:ri.conicet.gov.ar:11336/92843instacron: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:34982025-09-10 13:01:10.646CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
title Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
spellingShingle Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
Talio, María Carolina
CADMIUM
CLOUD POINT EXTRACTION
DRINKING WATER
MOLECULAR FLUORESCENCE
title_short Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
title_full Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
title_fullStr Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
title_full_unstemmed Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
title_sort Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology
dc.creator.none.fl_str_mv Talio, María Carolina
Luconi, Marta Olga
Masi, Adriana Noemi
Fernandez, Liliana Patricia
author Talio, María Carolina
author_facet Talio, María Carolina
Luconi, Marta Olga
Masi, Adriana Noemi
Fernandez, Liliana Patricia
author_role author
author2 Luconi, Marta Olga
Masi, Adriana Noemi
Fernandez, Liliana Patricia
author2_role author
author
author
dc.subject.none.fl_str_mv CADMIUM
CLOUD POINT EXTRACTION
DRINKING WATER
MOLECULAR FLUORESCENCE
topic CADMIUM
CLOUD POINT EXTRACTION
DRINKING WATER
MOLECULAR FLUORESCENCE
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 highly sensitive micelle-mediated extraction methodology for the preconcentration and determination of trace levels of cadmium by molecular fluorescence has been developed. Metal was complexed with o-phenanthroline (o-phen) and eosin (eo) at pH 7.6 in buffer Tris medium and quantitatively extracted into a small volume of surfactant-rich phase of PONPE 7.5 after centrifugating. The chemical variables affecting cloud point extraction (CPE) were evaluated and optimized. The RSD for six replicates of cadmium determinations at 0.84 μg L-1 level was 1.17%. The linearity range using the preconcentration system was between 2.79 × 10-3 μg L-1 and 2.81 μg L-1 with a correlation coefficient of 0.99. Under the optimal conditions, it obtained a LOD of 8.38 × 10-4 μg L-1 and LOQ of 2.79 × 10-3 μg L-1. The method presented good sensitivity and selectivity and was applied to the determination of trace amounts of cadmium in commercially bottled mineral water, tap water and water well samples with satisfactory results. The proposed method is an innovative application of CPE-luminescence to metal analysis comparable in sensitivity and accuracy with atomic spectroscopies.
Fil: Talio, María Carolina. 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
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis; Argentina
Fil: Masi, Adriana Noemi. 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
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
description A highly sensitive micelle-mediated extraction methodology for the preconcentration and determination of trace levels of cadmium by molecular fluorescence has been developed. Metal was complexed with o-phenanthroline (o-phen) and eosin (eo) at pH 7.6 in buffer Tris medium and quantitatively extracted into a small volume of surfactant-rich phase of PONPE 7.5 after centrifugating. The chemical variables affecting cloud point extraction (CPE) were evaluated and optimized. The RSD for six replicates of cadmium determinations at 0.84 μg L-1 level was 1.17%. The linearity range using the preconcentration system was between 2.79 × 10-3 μg L-1 and 2.81 μg L-1 with a correlation coefficient of 0.99. Under the optimal conditions, it obtained a LOD of 8.38 × 10-4 μg L-1 and LOQ of 2.79 × 10-3 μg L-1. The method presented good sensitivity and selectivity and was applied to the determination of trace amounts of cadmium in commercially bottled mineral water, tap water and water well samples with satisfactory results. The proposed method is an innovative application of CPE-luminescence to metal analysis comparable in sensitivity and accuracy with atomic spectroscopies.
publishDate 2009
dc.date.none.fl_str_mv 2009-10
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/11336/92843
Talio, María Carolina; Luconi, Marta Olga; Masi, Adriana Noemi; Fernandez, Liliana Patricia; Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology; Elsevier Science; Journal of Hazardous Materials; 170; 1; 10-2009; 272-277
0304-3894
CONICET Digital
CONICET
url http://hdl.handle.net/11336/92843
identifier_str_mv Talio, María Carolina; Luconi, Marta Olga; Masi, Adriana Noemi; Fernandez, Liliana Patricia; Determination of cadmium at ultra-trace levels by CPE-molecular fluorescence combined methodology; Elsevier Science; Journal of Hazardous Materials; 170; 1; 10-2009; 272-277
0304-3894
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jhazmat.2009.04.101
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304389409006839
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 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_ 1842979930799865856
score 12.48226

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