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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10033

Title: Effect of pH on Zinc Adsorption and Solubility in Suspensions of Different Clays and Soils
Authors: A. M. Falatah
A. S. Mashhady
A. I. Metwally
Issue Date: 1993
Publisher: Z. Pflainzenernahr. Bodenk.,
Abstract: Zinc solubility in clay and soil suspensions was controlled by chemi-sorption at pH 4.5 - 7.0. Thesolubility in clay mineral suspensions was in the order palygorskite < montmorillonite < kaolitlite and reflected the high affinity of zinc to palygorskite and the high CEC of montmorillonite. The solubility in soil suspensions was in the order haplustoll < Torrifluvents and reflected the effect of high CEC and organic matter content of the first. The slopes of the pH-pZn curves, calculated zinc potential and sequential desorption data suggested that Zn++- Zn(OH)2 aqueous controlled the solubility of zinc in soil and clay mineral suspensions at pH 7.5 - 9.0. The slopes of the pH-pZn curves of two soils were, however, modified by the possible peptization of organic matter and Zn(OH)2.
URI: http://hdl.handle.net/123456789/10033
Appears in Collections:College of Foods And Agricultural Science

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