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dc.contributor.author
Rossi, Ezequiel
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dc.contributor.author
Errea, María Inés
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dc.contributor.author
de Cortalezzi, María Marta Fidalgo
dc.contributor.author
Stripeikis, Jorge Daniel
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dc.date.available
2019-03-29T16:27:58Z
dc.date.issued
2017-01
dc.identifier.citation
Rossi, Ezequiel; Errea, María Inés; de Cortalezzi, María Marta Fidalgo; Stripeikis, Jorge Daniel; Selective determination of Cr (VI) by on-line solid phase extraction FI-SPE-FAAS using an ion exchanger resin as sorbent: An improvement treatment of the analytical signal; Elsevier Science; Microchemical Journal; 130; 1-2017; 88-92
dc.identifier.issn
0026-265X
dc.identifier.uri
http://hdl.handle.net/11336/72826
dc.description.abstract
A flow injection (FI) technique based on an on-line solid phase extraction (SPE) coupled with flame atomic absorption spectroscopy (FAAS) to selectively quantify chromium (VI) in the presence of chromium (III) was developed. An anion exchanger was used as solid sorbent and the detection limit found was two order of magnitude lower than that expected quantifying by FAAS. Until now, quantitative determinations in FAAS were carried out by measuring the height of the peaks rather than their area. In our hands, the software was reconfigured and the area under the peaks could be measured. Considering area instead of height, the enhancement factor increases from 6.7 to 360 (approx. 54 times) giving a detection limit of 0.034 μg·L− 1, lower than that obtained using much more expensive instruments such as electrothermal atomic absorption spectrometry (ETAAS) or inductively coupled plasma-atomic emission spectrometry (IPC-AES), greatly enhancing the potential of this methodology for future use in speciation studies. The operation conditions were: pH 3, sample loading 50 mL·min− 1, elution flow rate 7.5 mL·min− 1. The anion exchanger lifetime was over 100 adsorption/desorption cycles. Anions commonly present in natural aqueous systems did not interfere in the chromium retention. The accuracy was validated using a certified reference material (Fluka Analytical, QC3453).
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
Analytical Signal Processing
dc.subject
Cr (Vi) Selective Analysis
dc.subject
Flame Atomic Absorption Spectrometry
dc.subject
Flow Injection
dc.subject.classification
Otras Ingeniería Química
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Selective determination of Cr (VI) by on-line solid phase extraction FI-SPE-FAAS using an ion exchanger resin as sorbent: An improvement treatment of the analytical signal
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-29T12:14:29Z
dc.journal.volume
130
dc.journal.pagination
88-92
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Rossi, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Tecnológico de Buenos Aires; Argentina
dc.description.fil
Fil: Errea, María Inés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Tecnológico de Buenos Aires; Argentina
dc.description.fil
Fil: de Cortalezzi, María Marta Fidalgo. University of Missouri; Estados Unidos
dc.description.fil
Fil: Stripeikis, Jorge Daniel. Instituto Tecnológico de Buenos Aires; Argentina
dc.journal.title
Microchemical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0026265X16302910
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.microc.2016.08.004
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