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The influence of ultrasonic waves on the hydrogen ion concentration and the stability of colloidal solutions

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Summary

The influence of ultrasonic waves on the hydrogen ion concentration of several colloids have been studied It has been found that the sols of antimony sulphide, arsenious sulphide, stannic hydroxide, chromium hydroxide, vanadium pentoxide and manganese dioxide show slight decrease in pH values. On the other hand the sols of prussian blue, copper ferrocyanide, uranium ferrocyanide, aluminium hydroxide and cerium hydroxide show an increase and that of ferric arsenate, ferric phosphate and ferric hydroxide do not show any change in pH values. Further the sols of antimony sulphide, arsenic sulphide, manganese dioxide and uranium ferrocyanide coagulate on prolonged exposure and ceric hydroxide sol sets to a gel.

Zusammenfassung

Es wurde der Einfluß von Ultraschall auf die Wasserstoffionenkonzentration mehrerer Kolloide untersucht. Sole von Antimonsulfid, Arsensulfid, Zinnhydroxyd, Chromhydroxyd, Vanadiumpentoxyd und Mangandioxyd zeigen eine leichte Verminderung der pH-Werte. Andererseits lassen Sole von Preußisch-Blau, Kupferferrocyanid, Uranferrocyanid, Aluminiumhydroxyd und Cerhydroxyd einen Anstieg erkennen, während Ferriarsenat-, Ferriphosphat- und Ferrihydroxyd-Sole keinerlei Veränderung der pH-Werte zeigen. Außerdem koagulieren Sole von Antimonsulfid, Arsensulfid, Mangandioxyd und Uranferrocyanid bei längerer Beschallung, und Cerhydroxyd bildet ein Gel.

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Reference

  1. Prakash, S. andA. K. Ghosh, Kolloid-Z.151, 72–73 (1957).

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Prakash, S., Kumar Ghosh, A. The influence of ultrasonic waves on the hydrogen ion concentration and the stability of colloidal solutions. Kolloid-Zeitschrift 158, 33–35 (1958). https://doi.org/10.1007/BF01744654

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  • DOI: https://doi.org/10.1007/BF01744654

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