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45. | | OLIVEIRA, T. S. de; COSTA, L. M. da; CRUZ, C. D.; HORN, H. A. Metais pesados como indicadores de materiais de origem em uma topolitosequência do triangulo mineiro, Estado de Minas Gerais. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 8, p. 1451-65, ago. 1999 Título em inglês: Heavy metals as indicators of parent rocks in a topolithosequence in Triângulo Mineiro, State of Minas Gerais, Brazil. Biblioteca(s): Embrapa Unidades Centrais. |
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52. | | DIAS, L. E.; ALVAREZ, V. H.; COSTA, L. M.; NOVAIS, R. F. Estimativa do potencial de movimentação de cations decorrente da adição de gesso, por meio de caracterização de formas de enxofre no solo. REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 20, Piracicaba : SBCS. p. 120-121. (Resumo n.040)., v., p.-, 1992. Biblioteca(s): Embrapa Agrobiologia. |
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56. | | MATOS, A. T. de; FONTES, M. P. F.; COSTA, L. M. da; MARTINEZ, J. A. Fatores de retardamento e coeficientes de dispersão-difusão dos metais zínco, cádmio, cobre e chumbo em solos do municipio de Viçosa-MG: II. correlação com algumas propriedades fisicas dos solos. IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.4, p. 2336-2338. Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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57. | | LOPES, L. R.; BRAGA, J. M.; COSTA, L. M. da; FONTES, M. P. F.; BEZERRA, R. Fósforo orgânico: influência de fosfato, calcário e período de incubação. Revista da Universidade do Amazonas. Serie: Ciencias Agrarias, Manaus, v.2, n.1, p.43-54, jan./jun. 1993. Biblioteca(s): Embrapa Amazônia Ocidental. |
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58. | | GOMES, P. C.; FONTES, M. P. F.; COSTA, L. M. da; MENDONCA, E. de S. Fracionamento de Cd, Cr, Cu, Ni e Pb influenciado por doses de metais em latossolo vermelho-amarelo. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 26., 1997. Rio de Janeiro, RJ. Resumos... Rio de Janeiro: Sociedade Brasileira de Ciencia do Solo, 1997. p.480. Biblioteca(s): Embrapa Solos. |
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Registros recuperados : 214 | |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
17/11/2009 |
Data da última atualização: |
15/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MATOS, W. O.; MENEZES, E. A.; GONZALEZ, M. H.; COSTA, L. M.; TREVIZAN, L. C.; NOGUEIRA, A. R. de A. |
Afiliação: |
WLADIANA O. MATOS, UFSCar/SÃO CARLOS, SP; EVELINE A. MENEZES, UFSCar/SÃO CARLOS, SP; MARIO HENRIQUE GONZALEZ, UFSCar/SÃO CARLOS, SP; LETÍCIA M. COSTA, UFMG/BELO HORIZONTE; LILIAN C. TREVIZAN, UFMG/BELO HORIZONTE; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
Título: |
Partial microwave-assisted wet digestion of animal tissue using a baby-bottle sterilizer for analyte determination by inductively coupled plasma optical emission spectrometry. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Spectrochimica Acta Part B: Atomic Spectroscopy, v. 64, n. 6, p. 615-618, june 2009. |
DOI: |
https://doi.org/10.1016/j.sab.2009.05.005 |
Idioma: |
Inglês |
Conteúdo: |
A procedure for partial digestion of bovine tissue is proposed using polytetrafluoroethylene (PTFE) micro-vessels inside a baby-bottle sterilizer under microwave radiation for multi-element determination by inductively coupled plasma optical emission spectrometry (ICP OES). Samples were directly weighed in laboratory-made polytetrafluoroethylene vessels. Nitric acid and hydrogen peroxide were added to the uncovered vessels, which were positioned inside the baby-bottle sterilizer, containing 500 mL of water. The hydrogen peroxide volume was fixed at 100 µL. The system was placed in a domestic microwave oven and partial digestion was carried out for the determination of Ca, Cu, Fe, Mg, Mn and Zn by inductively coupled plasma optical emission spectrometry. The single-vessel approach was used in the entire procedure, to minimize contamination in trace analysis. Better recoveries and lower residual carbon content (RCC) levels were obtained under the conditions established through a 24-1 fractional factorial design: 650 W microwave power, 7 min digestion time, 50 µL nitric acid and 50 mg sample mass. The digestion efficiency was ascertained according to the residual carbon content determined by inductively coupled plasma optical emission spectrometry. The accuracy of the proposed procedure was checked against two certified reference materials. |
Palavras-Chave: |
Microwave assisted; Multielemental determination. |
Thesaurus NAL: |
digestion; extraction; meat. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 02245naa a2200253 a 4500 001 1575070 005 2023-03-15 008 2009 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.sab.2009.05.005$2DOI 100 1 $aMATOS, W. O. 245 $aPartial microwave-assisted wet digestion of animal tissue using a baby-bottle sterilizer for analyte determination by inductively coupled plasma optical emission spectrometry.$h[electronic resource] 260 $c2009 520 $aA procedure for partial digestion of bovine tissue is proposed using polytetrafluoroethylene (PTFE) micro-vessels inside a baby-bottle sterilizer under microwave radiation for multi-element determination by inductively coupled plasma optical emission spectrometry (ICP OES). Samples were directly weighed in laboratory-made polytetrafluoroethylene vessels. Nitric acid and hydrogen peroxide were added to the uncovered vessels, which were positioned inside the baby-bottle sterilizer, containing 500 mL of water. The hydrogen peroxide volume was fixed at 100 µL. The system was placed in a domestic microwave oven and partial digestion was carried out for the determination of Ca, Cu, Fe, Mg, Mn and Zn by inductively coupled plasma optical emission spectrometry. The single-vessel approach was used in the entire procedure, to minimize contamination in trace analysis. Better recoveries and lower residual carbon content (RCC) levels were obtained under the conditions established through a 24-1 fractional factorial design: 650 W microwave power, 7 min digestion time, 50 µL nitric acid and 50 mg sample mass. The digestion efficiency was ascertained according to the residual carbon content determined by inductively coupled plasma optical emission spectrometry. The accuracy of the proposed procedure was checked against two certified reference materials. 650 $adigestion 650 $aextraction 650 $ameat 653 $aMicrowave assisted 653 $aMultielemental determination 700 1 $aMENEZES, E. A. 700 1 $aGONZALEZ, M. H. 700 1 $aCOSTA, L. M. 700 1 $aTREVIZAN, L. C. 700 1 $aNOGUEIRA, A. R. de A. 773 $tSpectrochimica Acta Part B: Atomic Spectroscopy$gv. 64, n. 6, p. 615-618, june 2009.
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