Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples

Autores
Berton, Paula; Wuilloud, Rodolfo German
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A simple and rapid dispersive liquid?liquid microextraction procedure based on an ionic liquid (ILDLLME) was developed for selective determination of cobalt (Co) with electrothermal atomic absorption spectrometry (ETAAS) detection. Cobalt was initially complexed with 1-nitroso-2-naphtol (1N2N) reagent at pH 4.0. The IL-DLLME procedure was then performed by using a few microliters of the room temperature ionic liquid (RTIL) 1-hexyl-3-methylimidazolium hexafluorophosphate [C6mim][PF6] as extractant while methanol was the dispersant solvent. After microextraction procedure, the Co-enriched RTIL phase was solubilized in methanol and directly injected into the graphite furnace. The effect of several variables on Co-1N2N complex formation, extraction with the dispersed RTIL phase, and analyte detection with ETAAS, was carefully studied in this work. An enrichment factor of 120 was obtained with only 6 mL of sample solution and under optimal experimental conditions. The resultant limit of detection (LOD) was 3.8 ng/L, while the relative standard deviation (RSD) was 3.4% (at 1 ug/L Co level and n = 10), calculated from the peak height of absorbance signals. The accuracy of the proposed methodology was tested by analysis of a certified reference material. The method was successfully applied for the determination of Co in environmental and biological samples.
Fil: Berton, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Materia
1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
ROOM TEMPERATURE IONIC LIQUID
MICROEXTRACTION
COBALT
ENVIRONMENTAL AND BIOLOGICAL SAMPLES
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:11336/242411
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/242411
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samplesBerton, PaulaWuilloud, Rodolfo German1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATEROOM TEMPERATURE IONIC LIQUIDMICROEXTRACTIONCOBALTENVIRONMENTAL AND BIOLOGICAL SAMPLEShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A simple and rapid dispersive liquid?liquid microextraction procedure based on an ionic liquid (ILDLLME) was developed for selective determination of cobalt (Co) with electrothermal atomic absorption spectrometry (ETAAS) detection. Cobalt was initially complexed with 1-nitroso-2-naphtol (1N2N) reagent at pH 4.0. The IL-DLLME procedure was then performed by using a few microliters of the room temperature ionic liquid (RTIL) 1-hexyl-3-methylimidazolium hexafluorophosphate [C6mim][PF6] as extractant while methanol was the dispersant solvent. After microextraction procedure, the Co-enriched RTIL phase was solubilized in methanol and directly injected into the graphite furnace. The effect of several variables on Co-1N2N complex formation, extraction with the dispersed RTIL phase, and analyte detection with ETAAS, was carefully studied in this work. An enrichment factor of 120 was obtained with only 6 mL of sample solution and under optimal experimental conditions. The resultant limit of detection (LOD) was 3.8 ng/L, while the relative standard deviation (RSD) was 3.4% (at 1 ug/L Co level and n = 10), calculated from the peak height of absorbance signals. The accuracy of the proposed methodology was tested by analysis of a certified reference material. The method was successfully applied for the determination of Co in environmental and biological samples.Fil: Berton, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaElsevier Science2010-03info: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/11336/242411Berton, Paula; Wuilloud, Rodolfo German; Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples; Elsevier Science; Analytica Chimica Acta; 662; 2; 3-2010; 155-1620003-2670CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0003267010000206info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aca.2010.01.012info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:03Zoai:ri.conicet.gov.ar:11336/242411instacron: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 09:58:04.217CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
title Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
spellingShingle Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
Berton, Paula
1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
ROOM TEMPERATURE IONIC LIQUID
MICROEXTRACTION
COBALT
ENVIRONMENTAL AND BIOLOGICAL SAMPLES
title_short Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
title_full Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
title_fullStr Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
title_full_unstemmed Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
title_sort Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
dc.creator.none.fl_str_mv Berton, Paula
Wuilloud, Rodolfo German
author Berton, Paula
author_facet Berton, Paula
Wuilloud, Rodolfo German
author_role author
author2 Wuilloud, Rodolfo German
author2_role author
dc.subject.none.fl_str_mv 1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
ROOM TEMPERATURE IONIC LIQUID
MICROEXTRACTION
COBALT
ENVIRONMENTAL AND BIOLOGICAL SAMPLES
topic 1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
ROOM TEMPERATURE IONIC LIQUID
MICROEXTRACTION
COBALT
ENVIRONMENTAL AND BIOLOGICAL SAMPLES
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 simple and rapid dispersive liquid?liquid microextraction procedure based on an ionic liquid (ILDLLME) was developed for selective determination of cobalt (Co) with electrothermal atomic absorption spectrometry (ETAAS) detection. Cobalt was initially complexed with 1-nitroso-2-naphtol (1N2N) reagent at pH 4.0. The IL-DLLME procedure was then performed by using a few microliters of the room temperature ionic liquid (RTIL) 1-hexyl-3-methylimidazolium hexafluorophosphate [C6mim][PF6] as extractant while methanol was the dispersant solvent. After microextraction procedure, the Co-enriched RTIL phase was solubilized in methanol and directly injected into the graphite furnace. The effect of several variables on Co-1N2N complex formation, extraction with the dispersed RTIL phase, and analyte detection with ETAAS, was carefully studied in this work. An enrichment factor of 120 was obtained with only 6 mL of sample solution and under optimal experimental conditions. The resultant limit of detection (LOD) was 3.8 ng/L, while the relative standard deviation (RSD) was 3.4% (at 1 ug/L Co level and n = 10), calculated from the peak height of absorbance signals. The accuracy of the proposed methodology was tested by analysis of a certified reference material. The method was successfully applied for the determination of Co in environmental and biological samples.
Fil: Berton, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
description A simple and rapid dispersive liquid?liquid microextraction procedure based on an ionic liquid (ILDLLME) was developed for selective determination of cobalt (Co) with electrothermal atomic absorption spectrometry (ETAAS) detection. Cobalt was initially complexed with 1-nitroso-2-naphtol (1N2N) reagent at pH 4.0. The IL-DLLME procedure was then performed by using a few microliters of the room temperature ionic liquid (RTIL) 1-hexyl-3-methylimidazolium hexafluorophosphate [C6mim][PF6] as extractant while methanol was the dispersant solvent. After microextraction procedure, the Co-enriched RTIL phase was solubilized in methanol and directly injected into the graphite furnace. The effect of several variables on Co-1N2N complex formation, extraction with the dispersed RTIL phase, and analyte detection with ETAAS, was carefully studied in this work. An enrichment factor of 120 was obtained with only 6 mL of sample solution and under optimal experimental conditions. The resultant limit of detection (LOD) was 3.8 ng/L, while the relative standard deviation (RSD) was 3.4% (at 1 ug/L Co level and n = 10), calculated from the peak height of absorbance signals. The accuracy of the proposed methodology was tested by analysis of a certified reference material. The method was successfully applied for the determination of Co in environmental and biological samples.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/242411
Berton, Paula; Wuilloud, Rodolfo German; Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples; Elsevier Science; Analytica Chimica Acta; 662; 2; 3-2010; 155-162
0003-2670
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242411
identifier_str_mv Berton, Paula; Wuilloud, Rodolfo German; Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples; Elsevier Science; Analytica Chimica Acta; 662; 2; 3-2010; 155-162
0003-2670
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/pii/S0003267010000206
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aca.2010.01.012
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
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score 13.13397

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