Abstract
ELECTROKINETIC methods can be used with great advantage in the study of the adsorption of electrolytes or potential-determining ions on crystalline substances. One of us1 determined the streaming potentials in diaphragms of precipitated and aged barium sulphate, as a function of the composition of the bathing electrolyte solution. Reyerson, Kolthoff and Kieth Coad2 have recently confirmed in a general way these results, With the exception that they found a constant negative charge in hydro-alcoholic (50 per cent) solution of potassium chloride (10-5 M). Ruyssen1 had found that by the replacement of the aqueous potassium chloride solution by a hydroalcoholic one the initial negative charge was reversed.
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References
Ruyssen, R., J. Phys. Chem., 44, 265 (1940). Kruyt, H. R., and Ruyssen, R., Kon. Acad. Wetenschappen Amsterdam, 37 498 (1934).
Reyerson, L. H., Kolthoff, I. M., and Coad, K., J. Phys. Chem., 51, 321 (1947).
Buchanan, A. S., and Heymann, E., Nature, 161, 649 (1948).
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RUYSSEN, R., LOOS, R. Electrokinetic Potentials of Aged Barium Sulphate Crystals. Nature 162, 741 (1948). https://doi.org/10.1038/162741a0
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DOI: https://doi.org/10.1038/162741a0
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