Selection and preparation of membranes

The choice of a suitable polymer material is a prerequisite for the success of the enrichment process. In general, all polymers with a low degree of crystallinity and low glass temperature show good enrichment capacities (Table 6.5-2). 

Silver chloride AgCl 2.0 0.45-16 Sensitive to UV and VIS, very soft, react with many metals 

KRS-5 TlBr/I 2.35 0.7-30 Very toxic, soft, attacked by warm water, acids and bases 

Zinc selenide ZnSe 2.42 0.5-14.3 May react with acids to H2Se 

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