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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. |
Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
08/04/2020 |
Data da última atualização: |
13/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SANTOS, M. A.; SILVA, A. B. S.; MACHADO, R. C.; DIAS, E. A.; BARROS, J. A. V. A.; NOGUEIRA, A. R. de A. |
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. |
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. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Spectrochimica Acta Part B: Atomic Spectroscopy, v. 167, 105842, may 2020. |
Páginas: |
4 p. |
DOI: |
https://doi.org/10.1016/j.sab.2020.105842 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Alkaline digestion; MIP OES; Sample preparation; Tetrafluoroboric acid. |
Categoria do assunto: |
W Química e Física |
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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Embrapa Pecuária Sudeste (CPPSE) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
15/01/2008 |
Data da última atualização: |
31/01/2008 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Circulação/Nível: |
-- - -- |
Autoria: |
SANTANA, D. L. de Q.; FAVARO, R. M.; LEITE, M. S. P.; ZANOL, K. M. R.; FERNANDES, B. V.; CAMARGO, J. M. M. |
Afiliação: |
Dalva Luiz de Queiroz Santana, Embrapa Florestas; Rodolfo Marcassi Favaro, Mestrando UFPR; Maria Silvia Pereira Leite, TURFAL; Keti Maria Rocha Zanol, UFPR; Bianca Vique Fernandes, V & M Florestal; Joelma Melissa Malherbe Camargo, doutoranda UFPR. |
Título: |
Controle do Psilideo-de-concha com utilização de fungos entomopatogênicos. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 10., 2007, Brasília, DF. Inovar para preservar a vida. Resumos. Brasília: DF: Embrapa Recursos Genéticos e Biotecnologia, 2007. |
Idioma: |
Português |
Palavras-Chave: |
Controle; Fungo entomopatogênico; Psilideo de concha. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00720naa a2200205 a 4500 001 1312049 005 2008-01-31 008 2007 bl --- 0-- u #d 100 1 $aSANTANA, D. L. de Q. 245 $aControle do Psilideo-de-concha com utilização de fungos entomopatogênicos. 260 $c2007 653 $aControle 653 $aFungo entomopatogênico 653 $aPsilideo de concha 700 1 $aFAVARO, R. M. 700 1 $aLEITE, M. S. P. 700 1 $aZANOL, K. M. R. 700 1 $aFERNANDES, B. V. 700 1 $aCAMARGO, J. M. M. 773 $tIn: SIMPÓSIO DE CONTROLE BIOLÓGICO, 10., 2007, Brasília, DF. Inovar para preservar a vida. Resumos. Brasília: DF: Embrapa Recursos Genéticos e Biotecnologia, 2007.
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