ASORODANINES: THE COMPLEX-FORMING PROPERTIES AND ANALYTICAL APPLICATION FOR THE EVALUATION OF THE WATERS CONTAMINATION WITH HEAVY METALS

Abstract

The objects of investigation: 18 asoderivatives of rhodanine, 3 - aminorhadanine and thiopropiorhodanine. For the first time, the investigation of its complex-forming properties with a view to using them as the analytic reagents for mercury, lead, cadmium, copper, nickel has been performed. The four new organic reagents for these elements, exceeding the known and the most widely used reagents by selectivity have been found for its determination. The spectrophotometric study of the new colour reactions has been made, the sensitivity and selectivity has been evaluated. The complex of the physico-chemical methods, the optimum one at the investigation of the complex-forming of heavy metals with asorhodanines, has been developed. The most probable mechanisms of the complex-forming and the structure of the complexes have been offered. The phenomenon of the autocatalysis, not know earlier for the colour reactions, has been detected. The recommendations on use of asorhodanines in the hydrochemical monitoring and the complex of the expressive high-selective, to be reproducable and high-sensible spectrophotometric and sorbtion-photometric methods of determination of the mercury, lead, cadmium, copper, nickel with application of the asorhodanines in the river, channel, collector-drainage, underground waters, urbanized and background regions of Russia and Turkmenistan and sewage waters of the different productions have been developed.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio