Table 1 Indexes and chemical composition of obtained samples in system M–Ca2+–NO3−–CO32−–PO43− (M–Na, K) (at fixed molar value of Ca/P = 1.67 and different ratio CO32−/PO43−) after heating to 400 °C
From: Immobilization of cesium from aqueous solution using nanoparticles of synthetic calcium phosphates
Samples index | M | Molar ratio CO32−/PO43− in initial solution | M (wt%) | Ca (wt%) | P (wt%) | C (wt%) | (Ca + M)/(P + C) (mol) |
|---|---|---|---|---|---|---|---|
I | Na | 0 | 0.28 | 34.40 | 18.76 | – | 1.44 |
II | 1 | 2.49 | 31.44 | 12.99 | 1.85 | 1.56 | |
III | K | 0 | – | 33.27 | 17.83 | – | 1.44 |
IV | 1 | 1.72 | 36.87 | 14.14 | 2.34 | 1.48 |