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dc.contributor.author
Berton, Paula
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dc.contributor.author
Wuilloud, Rodolfo German
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dc.date.available
2024-08-13T14:23:16Z
dc.date.issued
2010-03
dc.identifier.citation
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
dc.identifier.issn
0003-2670
dc.identifier.uri
http://hdl.handle.net/11336/242411
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
1-HEXYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
dc.subject
ROOM TEMPERATURE IONIC LIQUID
dc.subject
MICROEXTRACTION
dc.subject
COBALT
dc.subject
ENVIRONMENTAL AND BIOLOGICAL SAMPLES
dc.subject.classification
Química Analítica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Highly selective ionic liquid-based microextraction method for sensitive trace cobalt determination in environmental and biological samples
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-12T13:58:44Z
dc.journal.volume
662
dc.journal.number
2
dc.journal.pagination
155-162
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Berton, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.journal.title
Analytica Chimica Acta
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0003267010000206
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.aca.2010.01.012
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