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	Provedor de dados Scientia Agricola (1) Autor Alleoni,Luís Reynaldo Ferracciú (1) Camargo,Otávio Antônio de (1) Casagrande,José Carlos (1) Jordão,Camila Beig (1) Palavra-chave Copper (1) Desorption (1) Ionic strength (1) PH (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2004 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Copper desorption in a soil with variable charge Scientia Agricola Casagrande,José Carlos; Jordão,Camila Beig; Alleoni,Luís Reynaldo Ferracciú; Camargo,Otávio Antônio de. Adsorption processes of heavy metals in soils have been more extensively studied than desorption, in spite of this latter process being related to nutrient bioavailability in the soil solution. Copper desorption from surface (0-0.2 m) and subsurface (1.0 - 1.2 m) samples of an Anionic Acrudox was studied at two pH values (4.5 and 7.5). Soil samples were incubated with Cu rates varying from 0 to 400 mg kg-1, during 4 and 12 weeks, in the presence of CaCl2 as support electrolyte at concentrations of 0.01 and 0.001 mol L-1. Complete soil adsorption of added Cu was observed at pH 7.5 in all incubation periods, indicating that a 24h-shaking period was enough to reach equilibrium and maximum adsorption. Copper adsorption varied with the incubation period and was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Copper; Desorption; Ionic strength; PH. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000200012 Registros recuperados: 1 Primeira ... 1 ... Última

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