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Solubility of fine particles of strontium sulfate

Technical Report ·
OSTI ID:5656453
The Ostwald-Freundlich equation for the solubility of fine particles was extended to crystals of any geometry with any number of different interfacial tensions. Measuring the particle sizes by electron microscopy, the solubility of SrSO/sub 4/ particles in the colloidal range was investigated by a tracer method at 25.0/sup 0/C. Results are in good agreement with the theory. The smallest particles in a given population appear to control the solubility. The solid SrSO/sub 4//solution mean interfacial tension was calculated as 84 +- 8 erg. cm./sup -2/ at 25.0/sup 0/C against a much higher value given in the literature, which is considered to be in error. From precipitation experiments the size of SrSO/sub 4/ nuclei is estimated to be ca. 18A/sup 0/.
Research Organization:
Princeton Univ., NJ (USA)
DOE Contract Number:
AA02-78CH00033
OSTI ID:
5656453
Report Number(s):
NYO-6000; ON: DE84003472
Country of Publication:
United States
Language:
English