Data/hora: 16/06/2024 11:24:33

Provedor de dados: | 63
País: | Brazil
Título: | Study on vinasse dynamics in soil usin energy dispersive X-ray fluorescence with radioisotopic excitation
Autores: | Simabuco,S.M.; Nascimento Filho,V.F.
Data: | 1994-08-01
Ano: | 1994
Palavras-chave: | X-ray fluorescence; Energy dispersive; Radioisotopic excitation; Vinasse.
Resumo: | The distribution of S, Cl, K and Ca along the profiles of two soils of different texture (Red Yellow Podzolic and Dark Red Latosol) treated with amounts of vinasse equivalent to 4000 m³/ha were studied using energy dispersive X-ray fluorescence, observing a significant increase in the contents of these elements. The same effect was observed for Cu, Zn, Rb and Sr contents in soils treated with vinasse as compared to the control. The concentrations of Al, Si, Ti, Mn, Fe and Zr could also be evaluated but no significant variation was observed due to the high soil initial concentrations of these elements as compared to the low concentrations in the vinasse. Annular radioactive sources of Fe-55 and Cd-109 were employed for the excitation of these elements in the soil samples, treated or not with vinassse. For the detection of the characteristic X-rays, a Si (Li) semiconductor detector was used, coupled to a multichannel emulation card inserted in a microcomputer.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200002
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90161994000200002
Formato: | text/html
Fonte: | Scientia Agricola  v.51 n.2 1994
Fonte: | info:eu-repo/semantics/openAccess