SEPARATION AND DETERMINATION OF SOME CATI ONS IN THE TRANSITIONAL METALS OR PLATINIC METALS GROUPS, AS INTERNAL COMPLEXES WITH MERCAPTOBENZOTHIAZOLE, BY THE REVERSE-PHASE HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY

This paper presents a method to separate and determine some cations fr om the transition metals and platinum metals group, as internal comple xes with mercaptobenzothiazole, by reverse phase high performance liqu id chromatography. An advantage of this method is, among others, that it permits to determine the ionic form of the metal in the analyzed sa mple. The mercaptobenzothiazole metallic complexes detection limit ran ging 0.1 ppb (ng/ml) forplatinum and 0.7 ppb for palladium was obtaine d. The complexes can be quantitatively extracted in chloroform, thus m aking possible the cations determination in various aqueous medium.