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Prediction of the Concentration of Solutes in Soil Solutions For Soil Systems Containing Gypsum and Exchangeable Ca and Mg
Author(s) -
Dutt Gordon R.
Publication year - 1962
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1962.03615995002600040010x
Subject(s) - distilled water , chemistry , solubility , adsorption , soil water , ion exchange , solubility equilibrium , ion , gypsum , aqueous solution , inorganic chemistry , ionic bonding , chromatography , soil science , materials science , geology , organic chemistry , metallurgy
The equilibrium relationships for the solubility of CaSO 4 in solution and the exchange of Ca ++ and Mg ++ between solution and the soil exchange complex may be used in conjunction with the Debye‐Hückel theory to predict the equilibrium concentrations of the ions in solution and ions adsorbed by the exchanger when distilled water or a solution of Ca ++ and/or Mg ++ salts is used to wet a Ca‐Mg‐soil which contains an excess of CaSO 4 . The equilibrium concentration of the solution and adsorbed ions have been calculated for mixtures of CaSO 4 , Yolo soils, containing different ratios of Ca ++ to Mg ++ , and distilled water or 0.05 M MgCl 2 . The ionic concentration of the equilibrium solution was also determined experimentally for these same mixtures. The theoretical and measured concentrations of the ions in the equilibrium solution are compared.