Separation of Carrier-free As (III) from As (V) by the Thin-layer Chromatographic Method

Abstract

The simple and rapid separation of recoiling arsenite-⁷⁶As, which is produced by the neutron irradiation of arsenates, from the target was investigated by the thin-layer chromatographic method. The thin-layer plate was prepared by spreading“Wakogel B-5” silicagel containing 5% gypsum on a glass plate in 250μ thickness. Several developers were tested. By developing with acetone +conc. H₃PO₄ (10 : 1), As (III) with or without the carrier can be readily separated from As (V) in the developing time of 20-30 min.