Cellular and foamed plastics as separation media A new geometrical form of the solid phase in analytical liquid-solid contact.
There has been considerable interest during the last few years in using cellular (foamed) plastics (mainly polyurethanes) either unloaded or as a means of immobilizing hydrophobic organic reagents, powdered ion-exchangers or finely divided precipitates, for the collection and separation of inorganic or organic species from aqueous solution. Foamed plastics with anchored (bonded) functional groups have also been used for the same purpose. It has been realized that the application of cellular plastics is often advantageous not only for quantitative work but also for qualitative and semiquantitative analysis. Methods available on the application of cellular and foamed plastics for the collection, separation and recovery of various inorganic and organic components from aqueous solution are reviewed.
Braun
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Institute of Inorganic and Analytical Chemistry, L. Eötvös University, P.O. Box 123, 1443 Budapest, Hungary.
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