Niederschlagsbildung-III Kristallwachstum und einfluss der fremdionenkonzentration in der bariumsulfatfällung

The influence of foreign ions on the particle size of barium sulphate precipitates has been investigated by sedimentation experiments, establishing that NaCl, NaNO(3), KBr, KNO(3), and other salts at high concentrations powerfully hinder the growth of the crystals even at high supersaturation. The l...

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Bibliographic Details
Published inTalanta (Oxford) Vol. 19; no. 8; p. 945
Main Authors Liteanu, C, Lingner, H
Format Journal Article
LanguageEnglish
Published Netherlands 01.08.1972
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Summary:The influence of foreign ions on the particle size of barium sulphate precipitates has been investigated by sedimentation experiments, establishing that NaCl, NaNO(3), KBr, KNO(3), and other salts at high concentrations powerfully hinder the growth of the crystals even at high supersaturation. The linear growth rate has been measured as a function of BaSO(4) concentration, foreign ion concentration and [BaCl(2)]/[K(2)SO(4)] ratio. Because the growth is already diffusion controlled at a fivefold supersaturation, the BaSO(4) precipitates will not undergo Ostwald ripening. A suitable apparatus has been devised for the investigations.
ISSN:0039-9140
DOI:10.1016/0039-9140(72)80027-4