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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/04/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PEREZ, D. V.; SALDANHA, M. F. C.; MOREIRA, J. C.; VAITSMAN, D. S. |
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Afiliação: |
DANIEL VIDAL PEREZ, CNPS; MARCELO FRANCISCO COSTA SALDANHA, CNPS. |
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Título: |
Evaluation of uranium, thorium and niobium concentrations in some Brazilian soils. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON PROCESS RELATED TO ANALYTICAL CHEMISTRY IN ENVIRONMENTAL INVESTIGATIONS, 5., 1996, Gramado. Abstracts... Gramado: UFRGS, 1996. p. 27. |
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Idioma: |
Inglês |
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Conteúdo: |
Samples from superficial (A) and subsuperficial (B) diagnostic horizons of 15 Brazilian soils were analysed to determine the content of uranium, thorium and niobium (on a dry weight basis) by inductively coupled plasma - mass spectrocopy (ELAN 5000, Perkin-Elmer) following digestion with "aqua regia". A rande of 1.69 to 2.018 ug/kg for uranium were obtained for the superficial (A) horizons. A range of 0.47 to 937.6 ug/kg for niobium, 3.36 to 38.080 ug/kg for thorium and 1.28 to 2.298 ug/kg for uranium were obtained for the subsuperficial (B) horizons. In general except for Nb, soil samples of the B horizon showed higher contents of Th and U than those collected from the A horizon. The Pearson correlation, coefficients (all positives) were found in the A horizons between U and Fe (P<0.001), U and Th (P<0.01) Th and Fe (P<0.01), Nb and Fe (P<0.05). In the B horizons, only the correlation between U and Fe was significant (P<0.001). |
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Palavras-Chave: |
Nióbio; Tório. |
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Thesagro: |
Solo; Urânio. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01597nam a2200193 a 4500
001 1331675
005 2024-04-22
008 1996 bl uuuu u00u1 u #d
100 1 $aPEREZ, D. V.
245 $aEvaluation of uranium, thorium and niobium concentrations in some Brazilian soils.
260 $aIn: INTERNATIONAL COLLOQUIUM ON PROCESS RELATED TO ANALYTICAL CHEMISTRY IN ENVIRONMENTAL INVESTIGATIONS, 5., 1996, Gramado. Abstracts... Gramado: UFRGS, 1996. p. 27.$c1996
520 $aSamples from superficial (A) and subsuperficial (B) diagnostic horizons of 15 Brazilian soils were analysed to determine the content of uranium, thorium and niobium (on a dry weight basis) by inductively coupled plasma - mass spectrocopy (ELAN 5000, Perkin-Elmer) following digestion with "aqua regia". A rande of 1.69 to 2.018 ug/kg for uranium were obtained for the superficial (A) horizons. A range of 0.47 to 937.6 ug/kg for niobium, 3.36 to 38.080 ug/kg for thorium and 1.28 to 2.298 ug/kg for uranium were obtained for the subsuperficial (B) horizons. In general except for Nb, soil samples of the B horizon showed higher contents of Th and U than those collected from the A horizon. The Pearson correlation, coefficients (all positives) were found in the A horizons between U and Fe (P<0.001), U and Th (P<0.01) Th and Fe (P<0.01), Nb and Fe (P<0.05). In the B horizons, only the correlation between U and Fe was significant (P<0.001).
650 $aSolo
650 $aUrânio
653 $aNióbio
653 $aTório
700 1 $aSALDANHA, M. F. C.
700 1 $aMOREIRA, J. C.
700 1 $aVAITSMAN, D. S.
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Registro original: |
Embrapa Solos (CNPS) |
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| 1. |  | CARVALHO, D. A. de; MARTÍNEZ, A. M.; CAROLINO, I.; BARROS, M. C.; VALLEJO, M. E. C.; SANTOS-SILVA, F.; ALMEIDA, M. J. de O.; CAROLINO, N.; BERMEJO, J. V. D.; SARMENTO, J. R. Diversity and genetic relationship of free-range chickens from the Northeast Region of Brazil. Animals, v. 10, n. 10, 1857, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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