Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/7769 |
Resumo: | Texto completo: acesso restrito. p. 187-190 |
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Ferreira, Sergio Luis CostaSantos, Hilda Costa dosJesus, Djane Santiago deFerreira, Sergio Luis CostaSantos, Hilda Costa dosJesus, Djane Santiago de2013-01-07T15:12:13Z20010937-0633http://www.repositorio.ufba.br/ri/handle/ri/7769v. 369, n. 2Texto completo: acesso restrito. p. 187-190A procedure is proposed for the separation and determination of molybdenum in iron matrices by a batch process. It is based on the solid-phase extraction of the molybdenum(V) ion as thiocyanate complex on polyurethane (PU) foam. The extraction parameters were optimized. Using 0.20 mol L–1 hydrochloric acid, a thiocyanate concentration of 0.10 mol L–1, 100 mg of polyurethane foam and shaking time of 10 min, molybdenum (5–400 μg) can be separated and preconcentrated from large amounts of iron (10 mg). Desorption was carried out instantaneously by conc. nitric acid or acetone. Distribution coefficients, sorption capacity of the PU foam and coefficients of variation were also evaluated. The effect of some ions on the separation procedure was assessed. Iron(III) should be reduced to iron(II). The proposed procedure was used to determine molybdenum in standard iron matrices such as steel and pure iron. The achieved results did not show significant differences with certified values.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-07T15:12:13Z No. of bitstreams: 1 Ferreira.pdf: 29396 bytes, checksum: 98a9c0d493bacef847534e56b0fb01f9 (MD5)Made available in DSpace on 2013-01-07T15:12:13Z (GMT). No. of bitstreams: 1 Ferreira.pdf: 29396 bytes, checksum: 98a9c0d493bacef847534e56b0fb01f9 (MD5) Previous issue date: 2001http://dx.doi.org/10.1007/s002160000590reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMolybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foamFresenius' Journal of Analytical Chemistryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALFerreira.pdfFerreira.pdfapplication/pdf29396https://repositorio.ufba.br/bitstream/ri/7769/1/Ferreira.pdf98a9c0d493bacef847534e56b0fb01f9MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/7769/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTFerreira.pdf.txtFerreira.pdf.txtExtracted texttext/plain16898https://repositorio.ufba.br/bitstream/ri/7769/3/Ferreira.pdf.txt7b646a48f798088f80ced94778420293MD53ri/77692022-08-08 13:17:58.766oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:17:58Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
dc.title.pt_BR.fl_str_mv |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
dc.title.alternative.pt_BR.fl_str_mv |
Fresenius' Journal of Analytical Chemistry |
title |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
spellingShingle |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam Ferreira, Sergio Luis Costa |
title_short |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
title_full |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
title_fullStr |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
title_full_unstemmed |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
title_sort |
Molybdenum determination in iron matrices by ICP-AES after separation and preconcentration using polyurethane foam |
author |
Ferreira, Sergio Luis Costa |
author_facet |
Ferreira, Sergio Luis Costa Santos, Hilda Costa dos Jesus, Djane Santiago de |
author_role |
author |
author2 |
Santos, Hilda Costa dos Jesus, Djane Santiago de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ferreira, Sergio Luis Costa Santos, Hilda Costa dos Jesus, Djane Santiago de Ferreira, Sergio Luis Costa Santos, Hilda Costa dos Jesus, Djane Santiago de |
description |
Texto completo: acesso restrito. p. 187-190 |
publishDate |
2001 |
dc.date.issued.fl_str_mv |
2001 |
dc.date.accessioned.fl_str_mv |
2013-01-07T15:12:13Z |
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/7769 |
dc.identifier.issn.none.fl_str_mv |
0937-0633 |
dc.identifier.number.pt_BR.fl_str_mv |
v. 369, n. 2 |
identifier_str_mv |
0937-0633 v. 369, n. 2 |
url |
http://www.repositorio.ufba.br/ri/handle/ri/7769 |
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.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1007/s002160000590 |
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) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
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Repositório Institucional da UFBA |
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