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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
27/01/1997 |
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Data da última atualização: |
03/04/2017 |
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Autoria: |
ALVES, B. J. R.; BODDEY, R. M.; URQUIAGA, S. S. |
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Título: |
A rapid and sensitive flow injection technique for the analysis of ammonium in soil extracts. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v.24, n.3/4, p.277-284, 1993. |
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Idioma: |
Inglês |
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Conteúdo: |
The steam distilation technique for the quantification of soil mineral nitrogens is not well adapted to estimate very low levels of NH4+ and NO3- such as those found in tropical pastures. In this paper we describe a flow injection analysis (FIA) technique for the direct estimation of soil ammonium in potassium chloride extracts. The technique is based on the salicylate/hypochloride colorimetric reaction with the resulting colouration read at 647 nm. The speed of the reaction was increased by immersing the reaction coils in a water bath maintained at 70C. The technique was capable of accurately quantifying ammonium to concentrations as low as 0.05 mg NH4+-N/L (equivalent to 0.25 mg NH4+-N/g dry soil) and sample thoughputs of at least 60 samples per hour could be achieved. It was found that amino acids whould also give a positive colorimetric reaction but that in the ten tropical soils examined this was not a significant source of error. |
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Palavras-Chave: |
Ammonium; Amonio; Analysis. |
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Thesagro: |
Análise; Nitrogênio; Nutrição; Solo. |
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Thesaurus Nal: |
nitrogen; nutrition; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01656naa a2200265 a 4500
001 1790324
005 2017-04-03
008 1993 bl --- 0-- u #d
100 1 $aALVES, B. J. R.
245 $aA rapid and sensitive flow injection technique for the analysis of ammonium in soil extracts.
260 $c1993
520 $aThe steam distilation technique for the quantification of soil mineral nitrogens is not well adapted to estimate very low levels of NH4+ and NO3- such as those found in tropical pastures. In this paper we describe a flow injection analysis (FIA) technique for the direct estimation of soil ammonium in potassium chloride extracts. The technique is based on the salicylate/hypochloride colorimetric reaction with the resulting colouration read at 647 nm. The speed of the reaction was increased by immersing the reaction coils in a water bath maintained at 70C. The technique was capable of accurately quantifying ammonium to concentrations as low as 0.05 mg NH4+-N/L (equivalent to 0.25 mg NH4+-N/g dry soil) and sample thoughputs of at least 60 samples per hour could be achieved. It was found that amino acids whould also give a positive colorimetric reaction but that in the ten tropical soils examined this was not a significant source of error.
650 $anitrogen
650 $anutrition
650 $asoil
650 $aAnálise
650 $aNitrogênio
650 $aNutrição
650 $aSolo
653 $aAmmonium
653 $aAmonio
653 $aAnalysis
700 1 $aBODDEY, R. M.
700 1 $aURQUIAGA, S. S.
773 $tCommunications in Soil Science and Plant Analysis$gv.24, n.3/4, p.277-284, 1993.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 6 | |
| 2. |  | PAUVOLID-CORRÊA, A.; LANCELLOTI, S. R.; GONÇALVES, M. C. R.; JULIANO, R. S.; BARTH, O. M.; SCHATZMAYR, H. G. Preliminary investigation of the orthopoxvirus circulation in sheep from the Nhecolândia Sub-region in Pantanal of Mato Grosso do Sul, Central - West Brazil. Virus Reviews and Research, v. 15, supl. 1, p. 253, oct. 2010. Trabalho apresentado no NATIONAL MEETING OF VIROLOGY, 21.; MERCOSUL MEETING OF VIROLOGY, 5.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 3. | | PAUVOLID-CORRÊA, A.; KENNEY, J. L.; COUTO-LIMA, D.; CAMPOS, Z.; SCHATZMAYR, H. G.; NOGUEIRA, R. M. R.; BRAULT, A. C.; KOMAR, N. Ilheus virus isolation in the Pantanal, west-central Brazil. PLoS Neglected Tropical Diseases, v. 7, n. 7, p. 1-7, 2013. 8 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Pantanal. |
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| 4. | | PAUVOLID - CORREA, A.; MORALES, M. A.; LEVIS, S.; FIGUEIREDO, L. T. M.; COUTO-LIMA, D.; NOGUEIRA, M. F.; SILVA, E. E.; NOGUEIRA, R. M. R; SCHATZMAYR, H. G. Detection of neutralizing antibodies for west nile virus in resident horses from Brazilian Pantanal. Virus Reviews and Research, v. 15, supl. 1, p. 265, oct. 2010. Trabalho apresentado no NATIONAL MEETING OF VIROLOGY, 21.; MERCOSUL MEETING OF VIROLOGY, 5.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 5. | | PAUVOLID CORRÊA, A.; FIGUEIREDO, L. T. M.; MORALES, M. A.; LEVIS, S.; COUTO-LIMA, D.; NOGUEIRA, M. F.; SCHATZMAYR, H. G. Serological evidence of cacipacore virus circulation in horses from Brazilian Pantanal. Virus Reviews and Research, v. 15, supl. 1, p. 264-265, oct. 2010. Trabalho apresentado no NATIONAL MEETING OF VIROLOGY, 21.; MERCOSUL MEETING OF VIROLOGY, 5.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 6. | | PAUVOLID-CORRÊA, A.; MORALES, MARIA ALEJANDRA; LEVIS, S.; FIGUEIREDO, L. T. M.; COUTO-LIMA, D.; CAMPOS, Z.; NOGUEIRA, M. F.; SILVA, E. E. da; NOGUEIRA, R. M. R.; SCHATZMAYR, H. G. Neutralising antibodies for West Nile virus in horses from Brazilian Pantanal. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 106, n.4, p. 467-474, jun. 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pantanal. |
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| Registros recuperados : 6 | |
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