Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel

Detalhes bibliográficos
Autor(a) principal: Alcântara, Ilton L. [UNESP]
Data de Publicação: 2004
Outros Autores: Roldan, Paulo S. [UNESP], Castro, Gustavo R. [UNESP], Moraes, Fabrício V. [UNESP], Silva, Fábio A. [UNESP], Padilha, Cilene C. F. [UNESP], Oliveira, Jorge D. [UNESP], Padilha, Pedro M. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.2116/analsci.20.1029
http://hdl.handle.net/11449/67792
Resumo: A rapid and sensitive method was developed to determine trace levels of Cd2+ ions in an aqueous medium by flame atomic absorption spectrometry, using on-line preconcentration in a mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT). The Cd2+ ions were sorbed at pH 5.0. The preconcentrated Cd2+ ions were directly eluted from the column to the spectrometer's nebulizer-burner system using 100 μL of 2 mol L-1 hydrochloric acid. A retention efficiency of over 95% was achieved. The enrichment factor (calculated as the ratio of slopes of the calibration graphs) obtained with preconcentrations in a mini-column packed with SiAT (A = -1.3 × 10-3 + 1.8 × 10-3 [Cd2+]) and without preconcentrations (A = 4 × 10-5 + 3.5 × 10-3[Cd2+]), was 51 and the detection limit calculated was 0.38 μg L-1. The preconcentration procedure was applied to determine trace levels of Cd in river water samples. The optimum preconcentration conditions are discussed herein.
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spelling Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel2 aminothiazole derivativecadmiumhydrochloric acidriver watersilica geladsorptionaqueous solutionatomic absorption spectrometrycalibrationcombustionconcentration (parameters)elutionflame atomic absorption spectrometrynebulizeronline systempHsensitivity and specificitywater samplingCadmiumCalibrationHydrochloric AcidHydrogen-Ion ConcentrationIonsModels, ChemicalSilicon DioxideSpectrophotometrySpectrophotometry, AtomicSpectrophotometry, InfraredThiazolesTime FactorsWaterA rapid and sensitive method was developed to determine trace levels of Cd2+ ions in an aqueous medium by flame atomic absorption spectrometry, using on-line preconcentration in a mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT). The Cd2+ ions were sorbed at pH 5.0. The preconcentrated Cd2+ ions were directly eluted from the column to the spectrometer's nebulizer-burner system using 100 μL of 2 mol L-1 hydrochloric acid. A retention efficiency of over 95% was achieved. The enrichment factor (calculated as the ratio of slopes of the calibration graphs) obtained with preconcentrations in a mini-column packed with SiAT (A = -1.3 × 10-3 + 1.8 × 10-3 [Cd2+]) and without preconcentrations (A = 4 × 10-5 + 3.5 × 10-3[Cd2+]), was 51 and the detection limit calculated was 0.38 μg L-1. The preconcentration procedure was applied to determine trace levels of Cd in river water samples. The optimum preconcentration conditions are discussed herein.Instituto de Química Departamento de Quimica Analitica UNESP, P. O. Box 355, 14800-900, Araraquara, SPInstituto de Biociência Departamento de Quimica e Bioquimica UNESP, P. O. Box 510, 18618-000, Botucatu, SPInstituto de Biociências Departamento de Fisica e Biofisica UNESP, P. O. Box 510, 18618-000, Botucatu, SPUniversidade Estadual do Maranhao CESI, 65901-480, Imperatriz, MAInstituto de Química Departamento de Quimica Analitica UNESP, P. O. Box 355, 14800-900, Araraquara, SPInstituto de Biociência Departamento de Quimica e Bioquimica UNESP, P. O. Box 510, 18618-000, Botucatu, SPInstituto de Biociências Departamento de Fisica e Biofisica UNESP, P. O. Box 510, 18618-000, Botucatu, SPUniversidade Estadual Paulista (Unesp)Universidade Estadual do Maranhão (UEMA)Alcântara, Ilton L. [UNESP]Roldan, Paulo S. [UNESP]Castro, Gustavo R. [UNESP]Moraes, Fabrício V. [UNESP]Silva, Fábio A. [UNESP]Padilha, Cilene C. F. [UNESP]Oliveira, Jorge D. [UNESP]Padilha, Pedro M. [UNESP]2014-05-27T11:21:06Z2014-05-27T11:21:06Z2004-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1029-1032application/pdfhttp://dx.doi.org/10.2116/analsci.20.1029Analytical Sciences, v. 20, n. 7, p. 1029-1032, 2004.0910-6340http://hdl.handle.net/11449/6779210.2116/analsci.20.1029WOS:0002226975000072-s2.0-35429921062-s2.0-3542992106.pdf69814486374563910000-0003-4179-0574Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnalytical Sciences1.3550,424info:eu-repo/semantics/openAccess2024-01-17T06:30:02Zoai:repositorio.unesp.br:11449/67792Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:18:36.404463Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
title Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
spellingShingle Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
Alcântara, Ilton L. [UNESP]
2 aminothiazole derivative
cadmium
hydrochloric acid
river water
silica gel
adsorption
aqueous solution
atomic absorption spectrometry
calibration
combustion
concentration (parameters)
elution
flame atomic absorption spectrometry
nebulizer
online system
pH
sensitivity and specificity
water sampling
Cadmium
Calibration
Hydrochloric Acid
Hydrogen-Ion Concentration
Ions
Models, Chemical
Silicon Dioxide
Spectrophotometry
Spectrophotometry, Atomic
Spectrophotometry, Infrared
Thiazoles
Time Factors
Water
title_short Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
title_full Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
title_fullStr Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
title_full_unstemmed Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
title_sort Determination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel
author Alcântara, Ilton L. [UNESP]
author_facet Alcântara, Ilton L. [UNESP]
Roldan, Paulo S. [UNESP]
Castro, Gustavo R. [UNESP]
Moraes, Fabrício V. [UNESP]
Silva, Fábio A. [UNESP]
Padilha, Cilene C. F. [UNESP]
Oliveira, Jorge D. [UNESP]
Padilha, Pedro M. [UNESP]
author_role author
author2 Roldan, Paulo S. [UNESP]
Castro, Gustavo R. [UNESP]
Moraes, Fabrício V. [UNESP]
Silva, Fábio A. [UNESP]
Padilha, Cilene C. F. [UNESP]
Oliveira, Jorge D. [UNESP]
Padilha, Pedro M. [UNESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Estadual do Maranhão (UEMA)
dc.contributor.author.fl_str_mv Alcântara, Ilton L. [UNESP]
Roldan, Paulo S. [UNESP]
Castro, Gustavo R. [UNESP]
Moraes, Fabrício V. [UNESP]
Silva, Fábio A. [UNESP]
Padilha, Cilene C. F. [UNESP]
Oliveira, Jorge D. [UNESP]
Padilha, Pedro M. [UNESP]
dc.subject.por.fl_str_mv 2 aminothiazole derivative
cadmium
hydrochloric acid
river water
silica gel
adsorption
aqueous solution
atomic absorption spectrometry
calibration
combustion
concentration (parameters)
elution
flame atomic absorption spectrometry
nebulizer
online system
pH
sensitivity and specificity
water sampling
Cadmium
Calibration
Hydrochloric Acid
Hydrogen-Ion Concentration
Ions
Models, Chemical
Silicon Dioxide
Spectrophotometry
Spectrophotometry, Atomic
Spectrophotometry, Infrared
Thiazoles
Time Factors
Water
topic 2 aminothiazole derivative
cadmium
hydrochloric acid
river water
silica gel
adsorption
aqueous solution
atomic absorption spectrometry
calibration
combustion
concentration (parameters)
elution
flame atomic absorption spectrometry
nebulizer
online system
pH
sensitivity and specificity
water sampling
Cadmium
Calibration
Hydrochloric Acid
Hydrogen-Ion Concentration
Ions
Models, Chemical
Silicon Dioxide
Spectrophotometry
Spectrophotometry, Atomic
Spectrophotometry, Infrared
Thiazoles
Time Factors
Water
description A rapid and sensitive method was developed to determine trace levels of Cd2+ ions in an aqueous medium by flame atomic absorption spectrometry, using on-line preconcentration in a mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT). The Cd2+ ions were sorbed at pH 5.0. The preconcentrated Cd2+ ions were directly eluted from the column to the spectrometer's nebulizer-burner system using 100 μL of 2 mol L-1 hydrochloric acid. A retention efficiency of over 95% was achieved. The enrichment factor (calculated as the ratio of slopes of the calibration graphs) obtained with preconcentrations in a mini-column packed with SiAT (A = -1.3 × 10-3 + 1.8 × 10-3 [Cd2+]) and without preconcentrations (A = 4 × 10-5 + 3.5 × 10-3[Cd2+]), was 51 and the detection limit calculated was 0.38 μg L-1. The preconcentration procedure was applied to determine trace levels of Cd in river water samples. The optimum preconcentration conditions are discussed herein.
publishDate 2004
dc.date.none.fl_str_mv 2004-07-01
2014-05-27T11:21:06Z
2014-05-27T11:21:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.2116/analsci.20.1029
Analytical Sciences, v. 20, n. 7, p. 1029-1032, 2004.
0910-6340
http://hdl.handle.net/11449/67792
10.2116/analsci.20.1029
WOS:000222697500007
2-s2.0-3542992106
2-s2.0-3542992106.pdf
6981448637456391
0000-0003-4179-0574
url http://dx.doi.org/10.2116/analsci.20.1029
http://hdl.handle.net/11449/67792
identifier_str_mv Analytical Sciences, v. 20, n. 7, p. 1029-1032, 2004.
0910-6340
10.2116/analsci.20.1029
WOS:000222697500007
2-s2.0-3542992106
2-s2.0-3542992106.pdf
6981448637456391
0000-0003-4179-0574
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Analytical Sciences
1.355
0,424
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1029-1032
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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