Data/hora: 13/06/2024 05:28:48

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Concentration of radioactive elements (U, Th and K) derived from phosphatic fertilizers in cultivated soils	
Autores: 	Becegato,Valter Antonio; Ferreira,Francisco José Fonseca; Machado,William César Pollonio.	
Data: 	2008-12-01	
Ano: 	2008	
Palavras-chave: 	Gamma-rays spectrometry; Soils; Fertilizers.	
Resumo: 	Gamma spectrometric measurements were obtained for the agricultural soils aiming at characterizing the spatial distribution of radionuclide concentrations (K, eU and eTh), as well for the samples of phosphatic fertilizers and agricultural gypsum. In the study areas, three types of soils occured: Eutrophic Red Nitosol (Alfisoil), Eutroferric Red Latosol of clayey texture (Oxisoil) and Dystrophic Red Latosol of medium texture (Oxisoil). The results showed that the radionuclide concentrations in more clayey soils were higher than in more sandy soils, mainly as a function of a higher adsorption capacity of the former. For the area where human activity predominated, the average contents of K, eU and eTh were respectively 54.75; 10.22 and 7.27 Bq/Kg, significantly higher than those for the area where no fertilizers were used (34.15 Bq/Kg K; 1.69 Bq/Kg eU, and 5.36 Bq/Kg eTh). Variations in the radionuclide concentrations were also observed in various fertilizer formula used in soybean and wheat crops.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000600022	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132008000600022	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.51 n.6 2008	
Fonte: 	info:eu-repo/semantics/openAccess