Mostrar el registro sencillo del ítem
dc.contributor.author
Martinis, Estefanía Mabel
dc.contributor.author
Escudero, Leticia Belén
dc.contributor.author
Berton, Paula
dc.contributor.author
Monasterio, Romina Paula
dc.contributor.author
Filippini, Maria Flavia Ramona
dc.contributor.author
Wuilloud, Rodolfo German
dc.date.available
2019-12-26T14:40:03Z
dc.date.issued
2011-09
dc.identifier.citation
Martinis, Estefanía Mabel; Escudero, Leticia Belén; Berton, Paula; Monasterio, Romina Paula; Filippini, Maria Flavia Ramona; et al.; Determination of inorganic selenium species in water and garlic samples with on-line ionic liquid dispersive microextraction and electrothermal atomic absorption spectrometry; Elsevier Science; Talanta; 85; 4; 9-2011; 2182-2188
dc.identifier.issn
0039-9140
dc.identifier.uri
http://hdl.handle.net/11336/92907
dc.description.abstract
A non-chromatographic separation and preconcentration method for Se species determination based on the use of an on-line ionic liquid (IL) dispersive microextraction system coupled to electrothermal atomic absorption spectrometry (ETAAS) is proposed. Retention and separation of the IL phase was achieved with a Florisil®-packed microcolumn after dispersive liquid-liquid microextraction (DLLME) with tetradecyl(trihexyl)phosphonium chloride IL (CYPHOS® IL 101). Selenite [Se(IV)] species was selectively separated by forming Se-ammonium pyrrolidine dithiocarbamate (Se-APDC) complex followed by extraction with CYPHOS® IL 101. The methodology was highly selective towards Se(IV), while selenate [Se(VI)] was reduced and then indirectly determined. Several factors influencing the efficiency of the preconcentration technique, such as APDC concentration, sample volume, extractant phase volume, type of eluent, elution flow rate, etc., have been investigated in detail. The limit of detection (LOD) was 15 ng L-1 and the relative standard deviation (RSD) for 10 replicates at 0.5 μg L -1 Se concentration was 5.1%, calculated with peak heights. The calibration graph was linear and a correlation coefficient of 0.9993 was achieved. The method was successfully employed for Se speciation studies in garlic extracts and water samples.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
IONIC LIQUID
dc.subject
LIQUID-LIQUID MICROEXTRACTION
dc.subject
PRECONCENTRATION
dc.subject
SELENIUM
dc.subject
SPECIATION
dc.subject
TETRADECYL(TRIHEXYL)PHOSPHONIUM CHLORIDE
dc.subject.classification
Química Analítica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Determination of inorganic selenium species in water and garlic samples with on-line ionic liquid dispersive microextraction and electrothermal atomic absorption spectrometry
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-11-08T15:06:35Z
dc.journal.volume
85
dc.journal.number
4
dc.journal.pagination
2182-2188
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Martinis, Estefanía Mabel. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Escudero, Leticia Belén. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Berton, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Monasterio, Romina Paula. Universidad Nacional de la Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
dc.description.fil
Fil: Filippini, Maria Flavia Ramona. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.journal.title
Talanta
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.talanta.2011.07.065
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0039914011006588
Archivos asociados