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The effect of heat treatment upon the solubility of potassium in kalitrachytes

K. Holobradý and A. Dobiš

Department of Chemistry, Agricultural University, Nitra

 

Abstract: The influence of heat treatment upon the solubility of potassium in kalitrachytes was studied in a laboratory scale. The highest solubility of potassium in 1 N-nitric acid  and 2 % citric acid was found to have kalitrachyte from Kremnica which was heated at 600 °C and kalitrachyte from Nová Baňa heated at 700 °C. Furthermore, the influence of heating time upon t h e solubility of potassium in kalitrachytes was investigated by means of preparations made at constant temperature. These results can be valuable in further experimental studies dealing with the utilization of heat treated kalitrachytes instead of non-treated, e. g. when meliorating light soils with a very low total contents of K20.

Full paper in Portable Document Format: 224a272.pdf (in Slovak)

 

Chemical Papers 22 (4) 272–276 (1968)

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