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dc.contributor.author
Maratta Martínez, Sergio Ariel
dc.contributor.author
Martinez, Luis Dante
dc.contributor.author
Pacheco, Pablo Hugo
dc.date.available
2018-09-20T18:14:59Z
dc.date.issued
2016-07
dc.identifier.citation
Maratta Martínez, Sergio Ariel; Martinez, Luis Dante; Pacheco, Pablo Hugo; Development of an on line miniaturized non-chromatographic arsenic speciation system; Elsevier Science; Microchemical Journal; 127; 7-2016; 199-205
dc.identifier.issn
0026-265X
dc.identifier.uri
http://hdl.handle.net/11336/60497
dc.description.abstract
An arsenic speciation method is proposed introducing selective hydride generation, UV photooxidation and hydride trapping on oxidized multiwall carbon nanotubes (CNTs) with electrothermal atomic absorption spectrometry (ETAAS) for detection. To this end a flow injection system was designed to focus on miniaturization with minimal reagent consumption. As a result reagent consumption was kept in μL level with no need of carrier gas for hydride transport. This study obtained an enhancement factor of 60 when 2 mL of sample were loaded in the gas-liquid separator, arsine adsorbed on CNTs, and eluted with 30 μL of 5% HNO3 (v v-1). A limit of detection (LoD) of 0.78 ng L-1 was obtained. The precision was evaluated by relative standard deviation (RSD%) corresponding to 8.3% (n = 10). The method determined organic and inorganic arsenic fractions; and As3+ and As5+ concentrations in well and cistern water samples from arsenic endemic regions of Argentina.
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-nd/2.5/ar/
dc.subject
Arsenic Speciation
dc.subject
Carbon Nanotubes
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Etaas
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Hydride Trapping
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Miniaturization
dc.subject.classification
Otras Ciencias Químicas
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Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Development of an on line miniaturized non-chromatographic arsenic speciation system
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-20T13:14:43Z
dc.journal.volume
127
dc.journal.pagination
199-205
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Maratta Martínez, Sergio Ariel. 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
dc.description.fil
Fil: Martinez, Luis Dante. 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
dc.description.fil
Fil: Pacheco, Pablo Hugo. 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
dc.journal.title
Microchemical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0026265X16300078
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.microc.2016.03.010
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