A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction

Detalhes bibliográficos
Autor(a) principal: Baliza, Patrícia Xavier
Data de Publicação: 2009
Outros Autores: Teixeira, Leonardo Sena Gomes, Lemos, Valfredo Azevedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6196
Resumo: Trabalho completo: acesso restrito, p. 220–224
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spelling Baliza, Patrícia XavierTeixeira, Leonardo Sena GomesLemos, Valfredo AzevedoBaliza, Patrícia XavierTeixeira, Leonardo Sena GomesLemos, Valfredo Azevedo2012-06-20T20:56:50Z20090026-265Xhttp://www.repositorio.ufba.br/ri/handle/ri/6196v. 93, n. 2Trabalho completo: acesso restrito, p. 220–224In this work, a procedure for preconcentration of cobalt using dispersive liquid–liquid microextraction (DLLME) with the reagent Br-TAO as complexing reagent was developed. The procedure is based on a ternary system of solvents, where appropriate amounts of the extraction solvent, disperser solvent and the chelating agent Br-TAO are directly injected into an aqueous solution containing Co(II). A cloudy mixture is formed and the ions are extracted in the fine droplets of the extraction solvent. After extraction, the phase separation is performed with a rapid centrifugation, and cobalt is determined in the enriched phase by FAAS. Under the optimized conditions, the detection limit obtained was 0.9 µg L− 1. The enrichment factor and the consumptive index were 16 and 0.31 mL, respectively. The accuracy of the method was tested by the determination of cobalt in certified reference material of spinach leaves, NIST 1570a. The proposed procedure was successfully applied to the determination of cobalt in water samples.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-06-20T20:56:50Z No. of bitstreams: 1 (83)1-s2.0-S0026265X0900099X-main.pdf: 235931 bytes, checksum: 7ad28c2c25f38ffc86c2d0c82eecea5d (MD5)Made available in DSpace on 2012-06-20T20:56:50Z (GMT). No. of bitstreams: 1 (83)1-s2.0-S0026265X0900099X-main.pdf: 235931 bytes, checksum: 7ad28c2c25f38ffc86c2d0c82eecea5d (MD5) Previous issue date: 2009-11Elsevierhttp://dx.doi.org/10.1016/j.microc.2009.07.009reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAPreconcentrationDispersive liquid–liquid microextractionCobaltFAASWater samplesA procedure for determination of cobalt in water samples after dispersive liquid–liquid microextractionMicrochemical Journalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL(83)1-s2.0-S0026265X0900099X-main.pdf(83)1-s2.0-S0026265X0900099X-main.pdfapplication/pdf235931https://repositorio.ufba.br/bitstream/ri/6196/1/%2883%291-s2.0-S0026265X0900099X-main.pdf7ad28c2c25f38ffc86c2d0c82eecea5dMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6196/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT(83)1-s2.0-S0026265X0900099X-main.pdf.txt(83)1-s2.0-S0026265X0900099X-main.pdf.txtExtracted texttext/plain27810https://repositorio.ufba.br/bitstream/ri/6196/3/%2883%291-s2.0-S0026265X0900099X-main.pdf.txtb275a3c28196cbb152802044cda7fcd6MD53ri/61962022-09-23 09:22:36.558oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-09-23T12:22:36Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
dc.title.alternative.pt_BR.fl_str_mv Microchemical Journal
title A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
spellingShingle A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
Baliza, Patrícia Xavier
Preconcentration
Dispersive liquid–liquid microextraction
Cobalt
FAAS
Water samples
title_short A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
title_full A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
title_fullStr A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
title_full_unstemmed A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
title_sort A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextraction
author Baliza, Patrícia Xavier
author_facet Baliza, Patrícia Xavier
Teixeira, Leonardo Sena Gomes
Lemos, Valfredo Azevedo
author_role author
author2 Teixeira, Leonardo Sena Gomes
Lemos, Valfredo Azevedo
author2_role author
author
dc.contributor.author.fl_str_mv Baliza, Patrícia Xavier
Teixeira, Leonardo Sena Gomes
Lemos, Valfredo Azevedo
Baliza, Patrícia Xavier
Teixeira, Leonardo Sena Gomes
Lemos, Valfredo Azevedo
dc.subject.por.fl_str_mv Preconcentration
Dispersive liquid–liquid microextraction
Cobalt
FAAS
Water samples
topic Preconcentration
Dispersive liquid–liquid microextraction
Cobalt
FAAS
Water samples
description Trabalho completo: acesso restrito, p. 220–224
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2012-06-20T20:56:50Z
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://www.repositorio.ufba.br/ri/handle/ri/6196
dc.identifier.issn.none.fl_str_mv 0026-265X
dc.identifier.number.pt_BR.fl_str_mv v. 93, n. 2
identifier_str_mv 0026-265X
v. 93, n. 2
url http://www.repositorio.ufba.br/ri/handle/ri/6196
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.microc.2009.07.009
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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