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| Registros recuperados : 113 | |
| 29. |  | FRANCHINI, J. C.; MIYAZAWA, M.; PAVAN, M. A.; MALAVOLTA, E. Dinâmica de íons em solo ácido lixiviado com extratos de resíduos de adubos verdes e soluções puras de ácidos orgânicos. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 12, p. 2267-2276, nov. 1999 Título em inglês: Dynamic of ions in acid soil leached with green manure residues extracts and pure solutions of organic acids.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 33. | | PAVAN, M. A.; MIYAZAWA, M.; TSUNETA, M.; KISHINO, A. Y. Extracao de nutrientes em folhas de frutiferas de clima tropical, subtropical e temperado pelo metodo sem digestao. Revista Brasileira de Fruticultura, v.6, n. Unico, p,17-22, Cruz das Almas, 1984.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 37. | | MIYAZAWA, M.; PAVAN, M. A.; BLOCK, M. F. M. Determination of Ca, Mg, K, Mn, Cu, and P in coffee, soybean, corn, sunflower, and pasture grass leaf tissues by HC1 extraction method. Commun. Soil Sci. Plant Anal., v.15, n.2, p.141-147, 1984.| Biblioteca(s): Embrapa Agrobiologia. |
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| 38. | | MIYAZAWA, M.; PAVAN, M. A.; BLOCK, M. F. M. Determination of Ca, Mg, K, Mn, Cu, Zn, Fe, and P in coffee, soybean, corn, sunflower, and pasture grass leaf tissues by a HCl extraction method. Communications in Soil Science and Plant Analysis, New York, v. 15, n. 2, p. 141-147, 1984.| Biblioteca(s): Embrapa Trigo. |
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| 39. | | FRANCHINI, J. C.; MIYAZAWA, M.; PAVAN, M. A. Influência de resíduos vegetais nba toxidez de Al e na mobilidade de íons no solo. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 26.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 10.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 8.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 5., 2004, Lages. Fertbio 2004. Lages: SBCS, 2004. 1 CD-ROM.| Biblioteca(s): Embrapa Soja. |
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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
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
03/09/1998 |
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Data da última atualização: |
02/09/2021 |
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Autoria: |
NOGUEIRA, A. R. de A.; SOUZA, G. B. de; BATISTA, L. A. R.; ARRUDA, M. A. Z.; MIYAZAWA, M. |
|
Afiliação: |
ANA RITA DE ARAUJO NOGUEIRA, CPPSE; GILBERTO BATISTA DE SOUZA, CPPSE; LUIZ ALBERTO ROCHA BATISTA, CPPSE; UNICAMP; Instituto Agronômico do Paraná. |
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Título: |
Catalytic determination of cobalt by flow injection spectrophotometry: application in animal faeces analysis using hydrochloric acid as extracting solution. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Animal Feed Science and Technology. v.74, n.1, 1998. |
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Páginas: |
p.79-84 |
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Idioma: |
Inglês |
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Conteúdo: |
A flow injection system for cobalt determination in faeces of bovines and equines receiving CoEDTA as a tracer in animal nutrition studies is proposed, using 1.0 mol HCl lÿ1 as extracting medium, and detection by flow injection spectrophotometric procedure based on the catalytic effect of Co(II) on the oxidation of Tiron by hydrogen peroxide. Linearity was observed up to 8.0 mg Co lÿ1, and the detection limit was 0.2 mg Co lÿ1 (3 s blank). The system requires 0.12 mg Tiron per determination and handles 65 samples hÿ1. No baseline drift was observed during extended operation periods (8 h) and precise results (r.s.d.<1%) were detected. Accuracy was confirmed by running several faeces samples already analysed by flame atomic absorption spectrometry. Results related to the HCl extraction procedure were in close agreement with those obtained using the nitric-perchloric digestion (y0.978x0.101, R2 0.9848), suggesting that HCl extraction and flow injection determination can be used routinely for rapid analysis of cobalt in faeces. |
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Palavras-Chave: |
Flow injection; HCI extraction; Injeção em fluxo; Spectrophotometry. |
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Thesagro: |
Cobalto; Espectrofotometria. |
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Thesaurus NAL: |
cobalt. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01880naa a2200265 a 4500
001 1044204
005 2021-09-02
008 1998 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, A. R. de A.
245 $aCatalytic determination of cobalt by flow injection spectrophotometry$bapplication in animal faeces analysis using hydrochloric acid as extracting solution.$h[electronic resource]
260 $c1998
300 $ap.79-84
520 $aA flow injection system for cobalt determination in faeces of bovines and equines receiving CoEDTA as a tracer in animal nutrition studies is proposed, using 1.0 mol HCl lÿ1 as extracting medium, and detection by flow injection spectrophotometric procedure based on the catalytic effect of Co(II) on the oxidation of Tiron by hydrogen peroxide. Linearity was observed up to 8.0 mg Co lÿ1, and the detection limit was 0.2 mg Co lÿ1 (3 s blank). The system requires 0.12 mg Tiron per determination and handles 65 samples hÿ1. No baseline drift was observed during extended operation periods (8 h) and precise results (r.s.d.<1%) were detected. Accuracy was confirmed by running several faeces samples already analysed by flame atomic absorption spectrometry. Results related to the HCl extraction procedure were in close agreement with those obtained using the nitric-perchloric digestion (y0.978x0.101, R2 0.9848), suggesting that HCl extraction and flow injection determination can be used routinely for rapid analysis of cobalt in faeces.
650 $acobalt
650 $aCobalto
650 $aEspectrofotometria
653 $aFlow injection
653 $aHCI extraction
653 $aInjeção em fluxo
653 $aSpectrophotometry
700 1 $aSOUZA, G. B. de
700 1 $aBATISTA, L. A. R.
700 1 $aARRUDA, M. A. Z.
700 1 $aMIYAZAWA, M.
773 $tAnimal Feed Science and Technology.$gv.74, n.1, 1998.
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