Effect of pH on Zinc Adsorption and Solubility in Suspensions of Different Clays and Soils
Metwally, Abdelaleem; Mashhady, A. S.; Falatah, A. M.; Reda, M.;
Abstract
Zinc solubility in clay and soil suspensions was controlled by chemisorption at pH 4.5 – 7.0. The solubility in clay mineral suspensions was in the order palygorskite < montmorillonite « kaolinite 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 . Copyright © 1993 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
Other data
| Title | Effect of pH on Zinc Adsorption and Solubility in Suspensions of Different Clays and Soils | Authors | Metwally, Abdelaleem ; Mashhady, A. S.; Falatah, A. M.; Reda, M. | Issue Date | 1-Jan-1993 | Journal | Zeitschrift Fur Pflanzenernahrung Und Bodenkunde | ISSN | 00443263 | DOI | 10.1002/jpln.19931560206 | Scopus ID | 2-s2.0-0008832846 |
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