Demyd A. The usage of properties of sodium diethyldithiocarbaminate in amperometric analysis of cationic mixtures

Obgect - chemicl and electrochemical properties DDTK and cations Cu2+, Cu+, Zn2+, Ni2+, Co2+ against chloride and bromide. The aim of this work is - work scietific bases methodic determination cations Cu2+, Zn2+, Ni2+, Co2+ with DDTK in mixtures without division on the against solutions of chlorides and bromides of alkaline metals and studying of properties product this determinations methods electrometric analisis. Methods: amperometry, amperodinamic titration, voltamperometry, IR mikroscopy, potentiometry, methods volume chemical analisis, phisical-chemical methods determination kinetic chemical reaction. Cu2+ react as oxidant with DDTK against solutions of chlorides and bromides and forms Cu+. At titration of mixtures of copper (І) and (ІІ) against potassium chloride the parts of interaction of different valency forms of copper with DDTC are accurately differentiated. The order of their interaction with titrant depends on concentration of chlorides. In their concentrated solutions at first Cu2+ is precepitated, and then Cu+ is. Universal amperometric indicator Cu+ for analisis mixters cations heavy metals with usage concentric chlorides and bromides of alkaline, as regulator propertis components systems and sodium diethyldithiocarbaminate as titrant wos in the first introduse. On the basis of the carried out researches the techniques of simultaneous amperometric definitions of several cations in complex mixtures of natural and artificial origin without their division were developed, that allows to accelerate and simplify the analysis, not reducing its accuracy in comparison with existing methods.Result of the work wos usege in educational proces Ternopil national pedagogical university. Branch usage - analitical chemistry.