engleski

Precipitation of NH4UO2PO4*3H2O - Solubility and Structural Comparison with Alkali Uranyl (2+) Phosphates

Precipitates formed in the system UO2(NO3)2-NH4OH-H3PO4-H2O aged for 30 days at 298 K were studied. The precipitates were characterized by chemical and thermogravimetric analyses, x-ray powder diffraction, infrared spectroscopy, polarized light microscopy and by their fluorescent properties. The precipitation boundary was established tindaloometrically and microscopically. On the basis of these measurements, the stability conditions, structural parameters and solubility of the tetragonal polymorph of NH4[UO2PO4]*3H2O were determined.

alkali uranyl(2+)phosphates ; ammonium uranyl(2+)phosphate ; precipitation ; solubility product ; unit-cell dimensions ; x-ray diffraction pattern

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