Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS

Autores
Wuilloud, Rodolfo German; Wuilloud, Gustavo M.; Altamirano, Jorgelina Cecilia; Olsina, Roberto Antonio; Martinez, Luis Dante
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A method for the pre-concentration and speciation of chromium was developed. On-line pre-concentration and determination were obtained using flame atomic absorption spectrometry (FAAS) coupled with flow injection (FI). To determine the total chromium present in water samples, the chromium species were retained on an Amberlite XAD-16 resin as chromium-4-(2-Thiazolylazo)-resorcinol (Cr-TAR) complex, at pH 5.0. On the other hand, Cr(VI) was determined by selective formation of Cr-TAR complexes with the use of 1,2 cyclohexane-diaminetetracetic acid (CDTA) as masking agent of Cr(III). The Cr-TAR complexes were formed by heating the reagents at 90?C for 50 minutes and then retained on the resin. The Cr-TAR complexes were removed from the micro-column with ethanol. The Cr(III) concentration was determined by the difference between the total chromium concentration and that of Cr(VI). A sensitivity enhancement factor of 250 was obtained with respect to the chromium determination in aqueous medium by FAAS (50 for pre-concentration and 5 due to the use of ethanol as solvent). The detection limit for the pre-concentration of 50 mL of aqueous solution was 20 ng/L. The precision for 10 replicate determinations at the 2.0-?g/L Cr level was 3.8% relative standard deviation (RSD), calculated from the peak heights obtained. The calibration graph using the separation and pre-concentration method for chromium species was linear with a correlation coefficient of 0.9994 at levels near the detection limits up to at least 100 ?g/L. The method was successfully applied to the speciation of chromium in water samples.
Fil: Wuilloud, Rodolfo German. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Wuilloud, Gustavo M.. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina
Fil: Altamirano, Jorgelina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina
Fil: Olsina, Roberto Antonio. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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
Fil: Martinez, Luis Dante. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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
Materia
PRECONCENTRATION CHROMIUM
SPECIATION CHROMIUM
ATOMIC ABSORTION SPECTROMETRY (FAAS)
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:11336/103116
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/103116
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AASWuilloud, Rodolfo GermanWuilloud, Gustavo M.Altamirano, Jorgelina CeciliaOlsina, Roberto AntonioMartinez, Luis DantePRECONCENTRATION CHROMIUMSPECIATION CHROMIUMATOMIC ABSORTION SPECTROMETRY (FAAS)https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A method for the pre-concentration and speciation of chromium was developed. On-line pre-concentration and determination were obtained using flame atomic absorption spectrometry (FAAS) coupled with flow injection (FI). To determine the total chromium present in water samples, the chromium species were retained on an Amberlite XAD-16 resin as chromium-4-(2-Thiazolylazo)-resorcinol (Cr-TAR) complex, at pH 5.0. On the other hand, Cr(VI) was determined by selective formation of Cr-TAR complexes with the use of 1,2 cyclohexane-diaminetetracetic acid (CDTA) as masking agent of Cr(III). The Cr-TAR complexes were formed by heating the reagents at 90?C for 50 minutes and then retained on the resin. The Cr-TAR complexes were removed from the micro-column with ethanol. The Cr(III) concentration was determined by the difference between the total chromium concentration and that of Cr(VI). A sensitivity enhancement factor of 250 was obtained with respect to the chromium determination in aqueous medium by FAAS (50 for pre-concentration and 5 due to the use of ethanol as solvent). The detection limit for the pre-concentration of 50 mL of aqueous solution was 20 ng/L. The precision for 10 replicate determinations at the 2.0-?g/L Cr level was 3.8% relative standard deviation (RSD), calculated from the peak heights obtained. The calibration graph using the separation and pre-concentration method for chromium species was linear with a correlation coefficient of 0.9994 at levels near the detection limits up to at least 100 ?g/L. The method was successfully applied to the speciation of chromium in water samples.Fil: Wuilloud, Rodolfo German. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Wuilloud, Gustavo M.. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; ArgentinaFil: Altamirano, Jorgelina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; ArgentinaFil: Olsina, Roberto Antonio. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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; ArgentinaFil: Martinez, Luis Dante. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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; ArgentinaPerkin-Elmer Corporation2002-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/103116Wuilloud, Rodolfo German; Wuilloud, Gustavo M.; Altamirano, Jorgelina Cecilia; Olsina, Roberto Antonio; Martinez, Luis Dante; Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS; Perkin-Elmer Corporation; Atomic Spectroscopy; 23; 2; 3-2002; 44-510195-5373CONICET DigitalCONICETenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:54Zoai:ri.conicet.gov.ar:11336/103116instacron: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 09:50:54.424CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
title Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
spellingShingle Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
Wuilloud, Rodolfo German
PRECONCENTRATION CHROMIUM
SPECIATION CHROMIUM
ATOMIC ABSORTION SPECTROMETRY (FAAS)
title_short Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
title_full Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
title_fullStr Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
title_full_unstemmed Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
title_sort Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS
dc.creator.none.fl_str_mv Wuilloud, Rodolfo German
Wuilloud, Gustavo M.
Altamirano, Jorgelina Cecilia
Olsina, Roberto Antonio
Martinez, Luis Dante
author Wuilloud, Rodolfo German
author_facet Wuilloud, Rodolfo German
Wuilloud, Gustavo M.
Altamirano, Jorgelina Cecilia
Olsina, Roberto Antonio
Martinez, Luis Dante
author_role author
author2 Wuilloud, Gustavo M.
Altamirano, Jorgelina Cecilia
Olsina, Roberto Antonio
Martinez, Luis Dante
author2_role author
author
author
author
dc.subject.none.fl_str_mv PRECONCENTRATION CHROMIUM
SPECIATION CHROMIUM
ATOMIC ABSORTION SPECTROMETRY (FAAS)
topic PRECONCENTRATION CHROMIUM
SPECIATION CHROMIUM
ATOMIC ABSORTION SPECTROMETRY (FAAS)
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 method for the pre-concentration and speciation of chromium was developed. On-line pre-concentration and determination were obtained using flame atomic absorption spectrometry (FAAS) coupled with flow injection (FI). To determine the total chromium present in water samples, the chromium species were retained on an Amberlite XAD-16 resin as chromium-4-(2-Thiazolylazo)-resorcinol (Cr-TAR) complex, at pH 5.0. On the other hand, Cr(VI) was determined by selective formation of Cr-TAR complexes with the use of 1,2 cyclohexane-diaminetetracetic acid (CDTA) as masking agent of Cr(III). The Cr-TAR complexes were formed by heating the reagents at 90?C for 50 minutes and then retained on the resin. The Cr-TAR complexes were removed from the micro-column with ethanol. The Cr(III) concentration was determined by the difference between the total chromium concentration and that of Cr(VI). A sensitivity enhancement factor of 250 was obtained with respect to the chromium determination in aqueous medium by FAAS (50 for pre-concentration and 5 due to the use of ethanol as solvent). The detection limit for the pre-concentration of 50 mL of aqueous solution was 20 ng/L. The precision for 10 replicate determinations at the 2.0-?g/L Cr level was 3.8% relative standard deviation (RSD), calculated from the peak heights obtained. The calibration graph using the separation and pre-concentration method for chromium species was linear with a correlation coefficient of 0.9994 at levels near the detection limits up to at least 100 ?g/L. The method was successfully applied to the speciation of chromium in water samples.
Fil: Wuilloud, Rodolfo German. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Wuilloud, Gustavo M.. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina
Fil: Altamirano, Jorgelina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina
Fil: Olsina, Roberto Antonio. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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
Fil: Martinez, Luis Dante. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química Analítica; Argentina. 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
description A method for the pre-concentration and speciation of chromium was developed. On-line pre-concentration and determination were obtained using flame atomic absorption spectrometry (FAAS) coupled with flow injection (FI). To determine the total chromium present in water samples, the chromium species were retained on an Amberlite XAD-16 resin as chromium-4-(2-Thiazolylazo)-resorcinol (Cr-TAR) complex, at pH 5.0. On the other hand, Cr(VI) was determined by selective formation of Cr-TAR complexes with the use of 1,2 cyclohexane-diaminetetracetic acid (CDTA) as masking agent of Cr(III). The Cr-TAR complexes were formed by heating the reagents at 90?C for 50 minutes and then retained on the resin. The Cr-TAR complexes were removed from the micro-column with ethanol. The Cr(III) concentration was determined by the difference between the total chromium concentration and that of Cr(VI). A sensitivity enhancement factor of 250 was obtained with respect to the chromium determination in aqueous medium by FAAS (50 for pre-concentration and 5 due to the use of ethanol as solvent). The detection limit for the pre-concentration of 50 mL of aqueous solution was 20 ng/L. The precision for 10 replicate determinations at the 2.0-?g/L Cr level was 3.8% relative standard deviation (RSD), calculated from the peak heights obtained. The calibration graph using the separation and pre-concentration method for chromium species was linear with a correlation coefficient of 0.9994 at levels near the detection limits up to at least 100 ?g/L. The method was successfully applied to the speciation of chromium in water samples.
publishDate 2002
dc.date.none.fl_str_mv 2002-03
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/11336/103116
Wuilloud, Rodolfo German; Wuilloud, Gustavo M.; Altamirano, Jorgelina Cecilia; Olsina, Roberto Antonio; Martinez, Luis Dante; Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS; Perkin-Elmer Corporation; Atomic Spectroscopy; 23; 2; 3-2002; 44-51
0195-5373
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103116
identifier_str_mv Wuilloud, Rodolfo German; Wuilloud, Gustavo M.; Altamirano, Jorgelina Cecilia; Olsina, Roberto Antonio; Martinez, Luis Dante; Preconcentration and speciation of Cr(III) and Cr(VI) in water samples using amberlite XAD-16 resin and determination by flow injection-flame AAS; Perkin-Elmer Corporation; Atomic Spectroscopy; 23; 2; 3-2002; 44-51
0195-5373
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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
dc.publisher.none.fl_str_mv Perkin-Elmer Corporation
publisher.none.fl_str_mv Perkin-Elmer Corporation
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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