Selivanova T. Ion associates of heteropoly molybdates as analytical forms for the determination of silicon and germanium in various objects

Object of the investigation: reactions of the formation of heteropoly anions (HPA) of silicon(ІV) and germanium(ІV) as well as their ion associates (IA) with organic dyes. Subject of the investigation: chemical-analytical properties of molybdenum HPAs of Si(ІV) and Ge(ІV), their IAs with polymethine and tripenylmethane dyes. Methods of the investigation: chemical analysis, spectroscopy in ultraviolet, visible and infrared regions of the spectrum by investigation of the reactions of the formation of molybdenum HPAs of Si(IV) and Ge(IV) and their ІА with organic dyes. Spectrophotometry, colorimetry and visual test-methods by development of the analytical methods. Novelty: new analytical forms - IAs of HPAs of silicon with non-ionic surfactants and triphenylmethane dyes by using preconcentration on PUFs. For the first time, optimal conditions for formation of nanosized aggregates of IAs of 12-HPA of Si(IV) and Ge(IV) with astraphloxine. Methods for the sorption-spectrophotometric, colorimetric and visual test determination of Si(IV) and Ge(IV) after selective sorption of ІАs of 12-molybdogermanate on the paper were developed. Sphere of the use: developed methods are perspective for the analysis of environmental objects, biomedical and industrial samples. Extent of the implementation: Methods were introduced into the laboratory workshop "Methods for the purification and quality control of the waters " for the speciality "Ecology and protection of environment" in "Krivoi Rog National University" Krivoi Rog pedagogical institute.