Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS

Detalhes bibliográficos
Autor(a) principal: Matos, G. D.
Data de Publicação: 2005
Outros Autores: Tarley, César Ricardo Teixeira, Ferreira, Sergio Luis Costa, Arruda, Marco Aurélio Zezzi
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/2833
Resumo: p.65-74
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spelling Matos, G. D.Tarley, César Ricardo TeixeiraFerreira, Sergio Luis CostaArruda, Marco Aurélio ZezziMatos, G. D.Tarley, César Ricardo TeixeiraFerreira, Sergio Luis CostaArruda, Marco Aurélio Zezzi2011-09-22T19:35:03Z2011-09-22T19:35:03Z20050100-4670http://www.repositorio.ufba.br/ri/handle/ri/283330(1):65-74p.65-74No presente trabalho é proposto um sistema de pré-concentração em fase sólida de íons Co2+ com posterior determinação por GFAAS, cuja otimização das variáveis associadas ao desempenho do sistema de pré-concentração foi realizada por planejamento fatorial fracionário e metodologia de superfície de resposta (MSR). O método é baseado na extração de cobalto como um complexo Co2+-PAN (1:2) em uma mini-coluna de espuma de poliuretano (EPU) impregnada com 1-(2-piridilazo)-naftol (PAN) seguido pela eluição com solução de HCl e determinação por GFAAS. As variáveis químicas e de fluxo estudadas foram pH, concentração do tampão, concentração do eluente e vazões de pré-concentração e eluição. Os resultados obtidos a partir do planejamento fatorial fracionário 25-1 mostraram, com base na análise de variância (ANOVA), que apenas as variáveis pH, concentração do tampão e a interação (pH X concentração do tampão) foram estatisticamente significativas com nível de 95% de confiança. Nas condições otimizadas, o método forneceu um fator de enriquecimento de 11,6 vezes com respectivos limites de detecção e quantificação de 38 e 130 ng L-1 e faixa linear variando de 0,13 a 10 mg L-1. A precisão (n=9) avaliada em termos de desvio padrão relativo (DPR) foi respectivamente de 5,18 e 2,87% para concentrações de cobalto de 0,3 e 3,0 mg L-1.Submitted by Rigaud Andréa (andrearigaud16@yahoo.com.br) on 2011-09-22T19:35:03Z No. of bitstreams: 1 23552.pdf: 550087 bytes, checksum: ef1b2236191c1f79824943872323199d (MD5)Made available in DSpace on 2011-09-22T19:35:03Z (GMT). No. of bitstreams: 1 23552.pdf: 550087 bytes, checksum: ef1b2236191c1f79824943872323199d (MD5) Previous issue date: 2005São PauloPlanejamento Experimentalsistema de pré-concentraçãoespuma de poliuretanocobaltoExperimental Designspreconcentration systempolyurethane foamcobaltUse of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAASEclética Químicainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleporreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINAL23552.pdf23552.pdfapplication/pdf550087https://repositorio.ufba.br/bitstream/ri/2833/1/23552.pdfef1b2236191c1f79824943872323199dMD51LICENSElicense.txtlicense.txttext/plain1906https://repositorio.ufba.br/bitstream/ri/2833/2/license.txt845654b8b30ba1015b95d52fbe8f6661MD52TEXT23552.pdf.txt23552.pdf.txtExtracted texttext/plain26481https://repositorio.ufba.br/bitstream/ri/2833/3/23552.pdf.txt1eff15c8e36e1764975e9b7ba61c5c1eMD53ri/28332022-07-05 14:03:22.837oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:22Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
dc.title.alternative.pt_BR.fl_str_mv Eclética Química
title Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
spellingShingle Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
Matos, G. D.
Planejamento Experimental
sistema de pré-concentração
espuma de poliuretano
cobalto
Experimental Designs
preconcentration system
polyurethane foam
cobalt
title_short Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
title_full Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
title_fullStr Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
title_full_unstemmed Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
title_sort Use of experimental design in the optimisation of a solid phase preconcentration system for Cobalt determination by GFAAS
author Matos, G. D.
author_facet Matos, G. D.
Tarley, César Ricardo Teixeira
Ferreira, Sergio Luis Costa
Arruda, Marco Aurélio Zezzi
author_role author
author2 Tarley, César Ricardo Teixeira
Ferreira, Sergio Luis Costa
Arruda, Marco Aurélio Zezzi
author2_role author
author
author
dc.contributor.author.fl_str_mv Matos, G. D.
Tarley, César Ricardo Teixeira
Ferreira, Sergio Luis Costa
Arruda, Marco Aurélio Zezzi
Matos, G. D.
Tarley, César Ricardo Teixeira
Ferreira, Sergio Luis Costa
Arruda, Marco Aurélio Zezzi
dc.subject.por.fl_str_mv Planejamento Experimental
sistema de pré-concentração
espuma de poliuretano
cobalto
Experimental Designs
preconcentration system
polyurethane foam
cobalt
topic Planejamento Experimental
sistema de pré-concentração
espuma de poliuretano
cobalto
Experimental Designs
preconcentration system
polyurethane foam
cobalt
description p.65-74
publishDate 2005
dc.date.issued.fl_str_mv 2005
dc.date.accessioned.fl_str_mv 2011-09-22T19:35:03Z
dc.date.available.fl_str_mv 2011-09-22T19:35:03Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/2833
dc.identifier.issn.none.fl_str_mv 0100-4670
dc.identifier.number.pt_BR.fl_str_mv 30(1):65-74
identifier_str_mv 0100-4670
30(1):65-74
url http://www.repositorio.ufba.br/ri/handle/ri/2833
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