Liquid Anion Exchange Chromatographic Extraction and Separation of Osmium(VIII) with 4-(4-Methoxy-benzylideneimino)-5-methyl-4H-1,2,4-triazole-3-thiol in Hydrochloric Acid Medium

Abstract

A novel method is proposed for the extraction of microgram level concentration of osmium(VIII) from hydrochloric acid medium with 4-(4-methoxybenzylideneimino)-5-methyl-4H- 1,2,4-triazole-3-thiol (MBIMTT) dissolved in chloroform as an extractant. The osmium(VIII) from the organic phase is stripped with mixture of thiourea and 2 M hydrochloric acid and determined spectrophotometric method. The method affords the binary separation and determination of osmium(VIII) from synthetic mixture. The method is successfully applied for the separation and determination of osmium from the alloys. The method is highly selective, simple and reproducible.