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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
08/04/2020 |
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Data da última atualização: |
13/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, M. A.; SILVA, A. B. S.; MACHADO, R. C.; DIAS, E. A.; BARROS, J. A. V. A.; NOGUEIRA, A. R. de A. |
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Afiliação: |
Mykaelli A. Santos, UFSCar; Ana Beatriz S. Silva, UFSCar; Raquel C. Machado, UFSCar; Ellen A. Dias, UFSCar; Juan A. V. A. Barros, Agilent Technologies; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Silicon determination by microwave-induced plasma optical emission spectrometry: considerations and strategies for the use of tetrafluorboric acid and sodium hydroxide in sample preparation procedures. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Spectrochimica Acta Part B: Atomic Spectroscopy, v. 167, 105842, may 2020. |
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Páginas: |
4 p. |
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DOI: |
https://doi.org/10.1016/j.sab.2020.105842 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of tetrafluoroboric acid and sodium hydroxide were investigated for the total decomposition of plant tissues and fertilizers for Si determination by microwave-induced plasma optical emission spectrometry (MIP OES). The accuracy was estimated by comparing the results of the proposed method with those of energy dispersive X-ray fluorescence (ED-XRF). The optimized HBF4 volume required to decompose 100 mg of sample was estimated to be 0.2 mL (48% w v-1). The Si recovery obtained was 99%, and the limit of detection was 0.03 g kg-1. Concerning the reactions and the possible products formed, after digestion 70% of the Si was found as fluorosilicic acid. Besides this, hydrofluoric acid was formed. High dilution factors, the addition of excess boric acid, or the use of a sample introduction system manufactured from inert components can be adopted to avoid damage to the MIP OES components and contamination of the analytical blank. The introduction of air in the N2 plasma was assessed to reduce the matrix effect noted due to high sodium concentration in the alkaline digestion, and improved accuracy was achieved. The Si recoveries obtained by applying this method varied from 100 to 102%, and the limit of detection was 0.4 g kg-1. |
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Palavras-Chave: |
Alkaline digestion; MIP OES; Sample preparation; Tetrafluoroboric acid. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02149naa a2200253 a 4500
001 2121595
005 2023-03-13
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.sab.2020.105842$2DOI
100 1 $aSANTOS, M. A.
245 $aSilicon determination by microwave-induced plasma optical emission spectrometry$bconsiderations and strategies for the use of tetrafluorboric acid and sodium hydroxide in sample preparation procedures.$h[electronic resource]
260 $c2020
300 $a4 p.
520 $aThe use of tetrafluoroboric acid and sodium hydroxide were investigated for the total decomposition of plant tissues and fertilizers for Si determination by microwave-induced plasma optical emission spectrometry (MIP OES). The accuracy was estimated by comparing the results of the proposed method with those of energy dispersive X-ray fluorescence (ED-XRF). The optimized HBF4 volume required to decompose 100 mg of sample was estimated to be 0.2 mL (48% w v-1). The Si recovery obtained was 99%, and the limit of detection was 0.03 g kg-1. Concerning the reactions and the possible products formed, after digestion 70% of the Si was found as fluorosilicic acid. Besides this, hydrofluoric acid was formed. High dilution factors, the addition of excess boric acid, or the use of a sample introduction system manufactured from inert components can be adopted to avoid damage to the MIP OES components and contamination of the analytical blank. The introduction of air in the N2 plasma was assessed to reduce the matrix effect noted due to high sodium concentration in the alkaline digestion, and improved accuracy was achieved. The Si recoveries obtained by applying this method varied from 100 to 102%, and the limit of detection was 0.4 g kg-1.
653 $aAlkaline digestion
653 $aMIP OES
653 $aSample preparation
653 $aTetrafluoroboric acid
700 1 $aSILVA, A. B. S.
700 1 $aMACHADO, R. C.
700 1 $aDIAS, E. A.
700 1 $aBARROS, J. A. V. A.
700 1 $aNOGUEIRA, A. R. de A.
773 $tSpectrochimica Acta Part B: Atomic Spectroscopy$gv. 167, 105842, may 2020.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
07/04/2015 |
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Data da última atualização: |
03/04/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
JASMIN, J.; GONÇALVES, F. S.; ASCARI, I. J.; FONSECA, T. S.; CAMARGO, L. S. de A.; PETERS, V. M.; MENDEZ-OTERO, R. |
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Afiliação: |
J. JASMIN, UFJF; F. S. GONÇALVES, UFJF; I. J. ASCARI, UFJF; T. S. FONSECA, UFJF; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; V. M. PETERS, UFJF; R. MENDES-OTERO, UFRJ. |
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Título: |
Optimization of in vitro development of mouse embryos using mesenchymal stem cells as feeder layers. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Animal Reproduction, v. 11, n. 3, p. 463, 2014. |
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Idioma: |
Inglês |
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Notas: |
Edição dos proceedings do 28º Annual Meeting of the Brazilian Embryo Technology Society, 2014, Natal. |
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Palavras-Chave: |
Células-tronco mesenquimais; Co-cultura; Desenvolvimento embrionário. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1012907/1/Optimization-of-in-vitro-development-of-mouse-embryos.pdf
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Marc: |
LEADER 00785nam a2200217 a 4500
001 2012907
005 2024-04-03
008 2014 bl uuuu u00u1 u #d
100 1 $aJASMIN, J.
245 $aOptimization of in vitro development of mouse embryos using mesenchymal stem cells as feeder layers.$h[electronic resource]
260 $aAnimal Reproduction, v. 11, n. 3, p. 463$c2014
500 $aEdição dos proceedings do 28º Annual Meeting of the Brazilian Embryo Technology Society, 2014, Natal.
653 $aCélulas-tronco mesenquimais
653 $aCo-cultura
653 $aDesenvolvimento embrionário
700 1 $aGONÇALVES, F. S.
700 1 $aASCARI, I. J.
700 1 $aFONSECA, T. S.
700 1 $aCAMARGO, L. S. de A.
700 1 $aPETERS, V. M.
700 1 $aMENDEZ-OTERO, R.
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Embrapa Gado de Leite (CNPGL) |
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