Table 1.
Percent Extraction of Alkaline Earth Metal Ions from Water to CHCl3 at pH 8.90 and 25 °C
percent extraction |
|||||
---|---|---|---|---|---|
ionophore | Mg2+ | Ca2+ | Sr2+ | Ba2+ | Ra2+ |
3 | <0.1 | 15.6 | 73.5 | 98.7 | >99.9 |
4 | <0.1 | 12.7 | 78.3 | 99.2 | >99.9 |
5 | 12.4 | 17.8 | 13.8 | 12.5 | 13.4 |
6 | 93.8 | 92.5 | 90.3 | 87.0 | 89.0 |