An on-line pre-concentration system for determination of cadmium in drinking water using FAAS

Detalhes bibliográficos
Autor(a) principal: Santos, Walter Nei Lopes dos
Data de Publicação: 2006
Outros Autores: Costa, Jorge L. O., Araujo, Rennan Geovanny Oliveira, Jesus, Djane S. de, Costa, Antonio Celso Spinola
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6366
Resumo: RESTRITO
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spelling Santos, Walter Nei Lopes dosCosta, Jorge L. O.Araujo, Rennan Geovanny OliveiraJesus, Djane S. deCosta, Antonio Celso SpinolaSantos, Walter Nei Lopes dosCosta, Jorge L. O.Araujo, Rennan Geovanny OliveiraJesus, Djane S. deCosta, Antonio Celso Spinola2012-07-06T15:46:18Z2012-07-06T15:46:18Z20060304-3894http://www.repositorio.ufba.br/ri/handle/ri/6366v.137, n.3RESTRITOIn the present paper, a minicolumn of polyurethane foam loaded with 4-(2-pyridylazo)-resorcinol (PAR) is proposed as pre-concentration system for cadmium determination in drinking water samples by flame atomic absorption spectrometry. The optimization step was performed using two-level full factorial design and Doehlert matrix, involving the variables: sampling flow rate, elution concentration, buffer concentration and pH. Using the established experimental conditions in the optimization step of: pH 8.2, sampling flow rate 8.5 mL min−1, buffer concentration 0.05 mol L−1 and elution concentration of 1.0 mol L−1, this system allows the determination of cadmium with detection limit (LD) (3σ/S) of 20.0 ng L−1 and quantification limit (LQ) (10σ/S) of 64 ng L−1, precision expressed as relative standard deviation (R.S.D.) of 5.0 and 4.7% for cadmium concentration of 5.0 and 40.0 μg L−1, respectively, and a pre-concentration factor of 158 for a sample volume of 20.0 mL. The accuracy was confirmed by cadmium determination in the standard reference material, NIST SRM 1643d trace elements in natural water. This procedure was applied for cadmium determination in drinking water samples collected from Salvador City, Bahia, Brazil. For five samples analyzed, the achieved concentrations varied from 0.31 to 0.86 μg L−1.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2012-07-06T15:46:18Z No. of bitstreams: 1 GG.pdf: 247623 bytes, checksum: d178f25db9ca707caa0ee2edc72d1fc2 (MD5)Made available in DSpace on 2012-07-06T15:46:18Z (GMT). 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dc.title.pt_BR.fl_str_mv An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
dc.title.alternative.pt_BR.fl_str_mv Journal of Hazardous Materials
title An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
spellingShingle An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
Santos, Walter Nei Lopes dos
Cadmium determination
Drinking water
FAAS
Pre-concentration
title_short An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
title_full An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
title_fullStr An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
title_full_unstemmed An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
title_sort An on-line pre-concentration system for determination of cadmium in drinking water using FAAS
author Santos, Walter Nei Lopes dos
author_facet Santos, Walter Nei Lopes dos
Costa, Jorge L. O.
Araujo, Rennan Geovanny Oliveira
Jesus, Djane S. de
Costa, Antonio Celso Spinola
author_role author
author2 Costa, Jorge L. O.
Araujo, Rennan Geovanny Oliveira
Jesus, Djane S. de
Costa, Antonio Celso Spinola
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Santos, Walter Nei Lopes dos
Costa, Jorge L. O.
Araujo, Rennan Geovanny Oliveira
Jesus, Djane S. de
Costa, Antonio Celso Spinola
Santos, Walter Nei Lopes dos
Costa, Jorge L. O.
Araujo, Rennan Geovanny Oliveira
Jesus, Djane S. de
Costa, Antonio Celso Spinola
dc.subject.por.fl_str_mv Cadmium determination
Drinking water
FAAS
Pre-concentration
topic Cadmium determination
Drinking water
FAAS
Pre-concentration
description RESTRITO
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2012-07-06T15:46:18Z
dc.date.available.fl_str_mv 2012-07-06T15:46:18Z
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/6366
dc.identifier.issn.none.fl_str_mv 0304-3894
dc.identifier.number.pt_BR.fl_str_mv v.137, n.3
identifier_str_mv 0304-3894
v.137, n.3
url http://www.repositorio.ufba.br/ri/handle/ri/6366
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 Journal of Hazardous Materials
publisher.none.fl_str_mv Journal of Hazardous Materials
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.jhazmat.2006.03.046
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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