FIELD: analytical methods. SUBSTANCE: sorbent contains macroporous brick with particle size 0.3-0.5 mm (65-70%) covered by fine CaX-type zeolite (35-30%) prepared by mixing in water of the components followed by drying and heat treatment in inert gas flow at temperature gradually raised from 100 to 350 C with rate 50 C/h. EFFECT: improved working characteristics. 2 cl, 1 tbl
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