Reagent generation for chemical analysis assisted by ultrasonic irradiation

Detalhes bibliográficos
Autor(a) principal: Korn, Mauro
Data de Publicação: 2004
Outros Autores: Borges, Sivanildo da Silva, Maia, Pedro R. M., Lima, José Luis Fontes da Costa, Lapa, Rui A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/7701
Resumo: Texto completo:acesso restrito. p. 585-590
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spelling Korn, MauroBorges, Sivanildo da SilvaMaia, Pedro R. M.Lima, José Luis Fontes da CostaLapa, Rui A. S.Korn, MauroBorges, Sivanildo da SilvaMaia, Pedro R. M.Lima, José Luis Fontes da CostaLapa, Rui A. S.2012-12-20T18:22:15Z20040041-624Xhttp://www.repositorio.ufba.br/ri/handle/ri/7701v. 42, n. 1-9Texto completo:acesso restrito. p. 585-590Few methods, such as coulometrics, have been developed to produce reagents in situ for analytical purposes. In this work the concept related to the generation of ultrasound-assisted reagents was exploited to yield oxidizing species in batch and flow systems of analysis.To evaluate the efficiency of ultrasound-assisted reagent generation, the conversion of Fe2þ to Fe3þ associated with the 1,10-ophenantroline spectrophotometric method was tested to compare the oxidizing power of the produced species from pure water and aqueous solutions saturated with CCl4 or CHCl3 irradiated ultrasonic waves. Irradiation processes were conducted with an ultrasonic bath (40 kHz and 140 W). The borosilicate reactor was used in the batch studies, while the PTFE tube reactor was used for setting up the flow system, with the temperature during irradiation being controlled using a thermostatic bath. The sonochemical production of oxidizing agents was demonstrated to be efficient for chemical analysis in batch and flow systems. This technique was exemplified by oxidation of iodide and ferrous ions. It was observed that after 120 min of sonication approximately 40 lg of Fe2þ was quantitatively oxidized to Fe3þ. Similar result was obtained by the irradiation of iodine in aqueous–organic medium.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-12-20T18:22:14Z No. of bitstreams: 1 1-s2.0-S0041624X03002233-main.pdf: 288381 bytes, checksum: d853454b22d904374e799702ab53e498 (MD5)Made available in DSpace on 2012-12-20T18:22:15Z (GMT). No. of bitstreams: 1 1-s2.0-S0041624X03002233-main.pdf: 288381 bytes, checksum: d853454b22d904374e799702ab53e498 (MD5) Previous issue date: 2004Elsevierhttp://dx.doi.org/10.1016/j.ultras.2003.12.002reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAReagent generationFlow systemAutomationOxidizingReagent generation for chemical analysis assisted by ultrasonic irradiationUltrasonicsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL1-s2.0-S0041624X03002233-main.pdf1-s2.0-S0041624X03002233-main.pdfapplication/pdf288381https://repositorio.ufba.br/bitstream/ri/7701/1/1-s2.0-S0041624X03002233-main.pdfd853454b22d904374e799702ab53e498MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/7701/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT1-s2.0-S0041624X03002233-main.pdf.txt1-s2.0-S0041624X03002233-main.pdf.txtExtracted texttext/plain23572https://repositorio.ufba.br/bitstream/ri/7701/3/1-s2.0-S0041624X03002233-main.pdf.txt0197254f33ff874514df7d29c12f2f89MD53ri/77012022-07-05 14:04:14.386oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:04:14Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Reagent generation for chemical analysis assisted by ultrasonic irradiation
dc.title.alternative.pt_BR.fl_str_mv Ultrasonics
title Reagent generation for chemical analysis assisted by ultrasonic irradiation
spellingShingle Reagent generation for chemical analysis assisted by ultrasonic irradiation
Korn, Mauro
Reagent generation
Flow system
Automation
Oxidizing
title_short Reagent generation for chemical analysis assisted by ultrasonic irradiation
title_full Reagent generation for chemical analysis assisted by ultrasonic irradiation
title_fullStr Reagent generation for chemical analysis assisted by ultrasonic irradiation
title_full_unstemmed Reagent generation for chemical analysis assisted by ultrasonic irradiation
title_sort Reagent generation for chemical analysis assisted by ultrasonic irradiation
author Korn, Mauro
author_facet Korn, Mauro
Borges, Sivanildo da Silva
Maia, Pedro R. M.
Lima, José Luis Fontes da Costa
Lapa, Rui A. S.
author_role author
author2 Borges, Sivanildo da Silva
Maia, Pedro R. M.
Lima, José Luis Fontes da Costa
Lapa, Rui A. S.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Korn, Mauro
Borges, Sivanildo da Silva
Maia, Pedro R. M.
Lima, José Luis Fontes da Costa
Lapa, Rui A. S.
Korn, Mauro
Borges, Sivanildo da Silva
Maia, Pedro R. M.
Lima, José Luis Fontes da Costa
Lapa, Rui A. S.
dc.subject.por.fl_str_mv Reagent generation
Flow system
Automation
Oxidizing
topic Reagent generation
Flow system
Automation
Oxidizing
description Texto completo:acesso restrito. p. 585-590
publishDate 2004
dc.date.issued.fl_str_mv 2004
dc.date.accessioned.fl_str_mv 2012-12-20T18:22:15Z
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/7701
dc.identifier.issn.none.fl_str_mv 0041-624X
dc.identifier.number.pt_BR.fl_str_mv v. 42, n. 1-9
identifier_str_mv 0041-624X
v. 42, n. 1-9
url http://www.repositorio.ufba.br/ri/handle/ri/7701
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.ultras.2003.12.002
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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