| 摘要 |
An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of diluent, free-flowing and particulate, and comprises a Crown ether that is a 4,4'(5')[C4-C8-alkylcyclohexano]18-Crown-6 dispersed on an inert substrate material.
|
