METHOD FOR DETERMINING CONTENT OF OSMIUM (IV) BY EXTRACTION AND PHOTOMETRIC ANALYSIS

摘要

The proposed method for determining content of osmium (IV) by extraction and photometric analysis implies using, as solvent, mixture of toluene and dichloroethane with a ratio of 3:2 between the components of the mixture, concentration of H3PO4 acid of 1.9 ... 5.7 mol/l, and concentration of chloride ions of no more than 0/006 mol/l. As the base dye in the photometric analysis, 3-methylthio-1',3',3'-trimethylindocarbocyan with concentration of (0,4 ... 1,2)?10-4 mol/l.