HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Doner, H. E. Articles by Pratt, P. F. Search for Related Content PubMed Articles by Doner, H. E. Articles by Pratt, P. F. Agricola Articles by Doner, H. E. Articles by Pratt, P. F.

Solubility of Calcium Carbonate Precipitated in Aqueous Solutions of Magnesium and Sulfate Salts¹

ABSTRACT

Calcium carbonates were precipitated in the presence of various salts at controlled CO₂ partial pressures. Solubilities of the precipitates were compared with that of calcite and the precipitates were subjected to X-ray diffraction for the detection of crystalline products and in some cases analyzed for coprecipitated Mg. In NaCl solutions, the solubility of the carbonate was that of calcite. In MgCl₂ solutions, the solubility of the precipitate was higher than that of calcite, both calcite and aragonite were detected and Mg was coprecipitated in the solid phase. In solutions of Na₂SO₄, the solubility of the precipitate was higher than in the case of the MgCl₂ solutions and both calcite and vaterite were detected. In solutions of MgSO₄, the solubility of the precipitate was intermediate between that of the MgCl₂ solutions and the Na₂SO₄ solutions. The solubility product of CaCO₃ seemed to be related mainly to the nature of the solid phase.

¹ Contribution from the Department of Soils and Plant Nutrition, University of California, Riverside.

² Former Graduate Research Assistant and Professor of Soil Science, respectively.

Received for publication April 19, 1969. Accepted for publication May 22, 1969.