Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS

Detalhes bibliográficos
Autor(a) principal: Korn, Maria das Graças Andrade
Data de Publicação: 2012
Outros Autores: Barin, Juliano S., Pereira, J .S. F., Mello, Paola A., Knorr, C. L., Moraes, D. P., Mesko, Márcia F., Flores, E. M. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/15492
Resumo: Texto completo: acesso restrito. p. 308–314
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spelling Korn, Maria das Graças AndradeBarin, Juliano S.Pereira, J .S. F.Mello, Paola A.Knorr, C. L.Moraes, D. P.Mesko, Márcia F.Flores, E. M. M.Korn, Maria das Graças AndradeBarin, Juliano S.Pereira, J .S. F.Mello, Paola A.Knorr, C. L.Moraes, D. P.Mesko, Márcia F.Flores, E. M. M.2014-08-06T13:51:38Z20120039-9140http://repositorio.ufba.br/ri/handle/ri/15492v. 90, n. 30Texto completo: acesso restrito. p. 308–314The advantages and shortcomings of focused microwave-induced combustion (FMIC) for digestion of plant samples were studied. The effects of sample mass, absorbing solution, oxygen gas flow-rate, and time of reflux step on recoveries of major, minor and trace metals were systematically evaluated. Afterwards, Al, Ba, Ca, Co, Cr, Cu, Mg, Mn, Ni, Sr, V, and Zn were determined by inductively coupled plasma optical emission spectrometry (ICP OES) and by inductively coupled plasma mass spectrometry (ICP-MS). The main advantages of FMIC when compared to microwave-assisted wet digestion (MAWD) and focused-microwave-assisted wet digestion (FMAWD) are the possibility to digest larger masses of samples (up to 3 g) using shorter heating times and diluted nitric acid solution for absorbing all analytes. Using the selected experimental conditions for FMIC, residual carbon content was lower than 0.7% for all samples and relative standard deviation (RSD) varied from 1.5 to 14.1%. Certified reference materials (NIST 1515 apple leaves and NIST 1547 peach leaves) were used for checking accuracy and determined values for all metals were in agreement with certified values at a 95% confidence level. No statistical difference (ANOVA, 95% of confidence level) was observed for results obtained by FMIC, FMAWD, and MAWD. Limits of detection were lower when using FMIC in the range of 0.02–0.15 μg g−1 for ICP OES and 0.001–0.01 μg g−1 for ICP-MS, which were about 3 and 6 times lower than the values obtained by FMAWD and MAWD, respectively. It is important to point out that FMIC was a suitable sample preparation method for major, minor and trace metals by both determination techniques (ICP OES and ICP-MS). Additionally, since it allows lower LODs (because up to 3 g of sample can be digested) and diluted acid solutions are used (without any further dilution), the use of ICP-MS is not mandatory.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-08-06T13:51:38Z No. of bitstreams: 1 M.G.A. Korne.pdf: 354613 bytes, checksum: 174ea83d1308272b53eadf77ffcef6c9 (MD5)Made available in DSpace on 2014-08-06T13:51:38Z (GMT). No. of bitstreams: 1 M.G.A. Korne.pdf: 354613 bytes, checksum: 174ea83d1308272b53eadf77ffcef6c9 (MD5) Previous issue date: 2012http://dx.doi.org/ 10.1016/j.talanta.2012.03.048reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAFocused microwaveMicrowave-induced combustionTrace plant analysisResidual carbon contentFocused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MSTalantainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALM.G.A. Korne.pdfM.G.A. Korne.pdfapplication/pdf354613https://repositorio.ufba.br/bitstream/ri/15492/1/M.G.A.%20Korne.pdf174ea83d1308272b53eadf77ffcef6c9MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/15492/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTM.G.A. Korne.pdf.txtM.G.A. 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dc.title.pt_BR.fl_str_mv Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
dc.title.alternative.pt_BR.fl_str_mv Talanta
title Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
spellingShingle Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
Korn, Maria das Graças Andrade
Focused microwave
Microwave-induced combustion
Trace plant analysis
Residual carbon content
title_short Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
title_full Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
title_fullStr Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
title_full_unstemmed Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
title_sort Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS
author Korn, Maria das Graças Andrade
author_facet Korn, Maria das Graças Andrade
Barin, Juliano S.
Pereira, J .S. F.
Mello, Paola A.
Knorr, C. L.
Moraes, D. P.
Mesko, Márcia F.
Flores, E. M. M.
author_role author
author2 Barin, Juliano S.
Pereira, J .S. F.
Mello, Paola A.
Knorr, C. L.
Moraes, D. P.
Mesko, Márcia F.
Flores, E. M. M.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Korn, Maria das Graças Andrade
Barin, Juliano S.
Pereira, J .S. F.
Mello, Paola A.
Knorr, C. L.
Moraes, D. P.
Mesko, Márcia F.
Flores, E. M. M.
Korn, Maria das Graças Andrade
Barin, Juliano S.
Pereira, J .S. F.
Mello, Paola A.
Knorr, C. L.
Moraes, D. P.
Mesko, Márcia F.
Flores, E. M. M.
dc.subject.por.fl_str_mv Focused microwave
Microwave-induced combustion
Trace plant analysis
Residual carbon content
topic Focused microwave
Microwave-induced combustion
Trace plant analysis
Residual carbon content
description Texto completo: acesso restrito. p. 308–314
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2014-08-06T13:51:38Z
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://repositorio.ufba.br/ri/handle/ri/15492
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 90, n. 30
identifier_str_mv 0039-9140
v. 90, n. 30
url http://repositorio.ufba.br/ri/handle/ri/15492
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/ 10.1016/j.talanta.2012.03.048
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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collection Repositório Institucional da UFBA
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