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Information × Registration Number 0214U002339, 0111U001149 , R & D reports Title Heteropoly anions as analytical forms and reagents in spectroscopic and automated flow analytical methods popup.stage_title Head Tsiganok Ludmila Pavlovna, Registration Date 29-01-2014 Organization Dniepropetrovsk national university popup.description2 Object of the investigation - chemical and physical properties of monoligand and mixed heteropoly anions (HPA) of formula (XZM11O40q-, XZM17O61p-, where M = Mo(VI), W(VI); Z = SbIII, BiIII, TiIV et al.) in reactions of formation of ion associates (IA) with triphenylmethane and polymethine dyes (PD), reactions of interaction with reducing agents, species capable of forming complexes with metalsubstituted HPAs, processes of sorption of IAs with HPAs on solid sorbents. The goal of the investigation - fundamental investigations of formation reactions of ІА of HPA with basic dyes, including those of the new class (polymethine) by using their spectroscopic, luminescent, reduction-oxidation properties, sorption processes of ІА on solid sorbents, synthesis and investigation of reactions of HPA having Keggin or Dawson structure with reducing agents, species, which form complexes with metalsubstituted HPAs and development of spectroscopic and flow methods of analysis. Methods of the investigation and equipment - spectrophotometry, luminescence, colorimetry, fow-injection analysis, spectrophotometer, luminescent spectropmeter, scaner, flow system. Simple, rapid and highly selective spectrophotometric methods for the determination of Si(IV) and Ge(IV) have been developed based on the formation of ІАs of their molybdenum HPAs with polymethine dye Astra Phloxine, which have the sensitivity that is significantly better than for the existing methods for the determination of these elements and have the detection limit on the level of 0,3-1 mkg/l. For the first time, luminescent properties of ІА formed between polymethine dyes and HPAs have been investigated. It was shown that , owing to the formation of nanoaggregates of IA of HPA P(V) with PDs quenching of the luminescence of the dye occurs. Other consequence assocoated with the formation of organic nanoparticles is appearance of fairly seldom phenomenon - strongly intensified (up to 100 000 times) resonance scattering of the light which can be observed with common luminescent spectrophotometers. A number of automated methods for the determination of pharmaceutical preparates with reducing properties (p-amonophenol, cysteine, adrenalin, ascorbic acid) by sequential injection and cyclic injection analysis methods were developed. These methods significantly exceed existing best methods in sensitivity, simplicity, are fully automated, and meet all the principles of "Green chemistry". Implementation of the effective, highly sensitive methods for the determination of ascorbic acid, cysteine, adrenalin, p-aminophenol, paracetamol will enable to improve the control of the content of these compounds in pharmaceutical preparations. Methods of visual-test determination of ascorbic acid, phosphate-, ans silicat-ions are suitable for the development of simple test-systems with color scales and are applicable for their determination for the evaluation of the water quality by ecological monitoring, or determination of vitamic C in food products. Product Description popup.authors Вишнікін Андрій Борисович Денисенко Тетяна Олександрівна Заруба Сергій Вікторович Мєх Юлія Василівна Петрушина Галина Олександрівна popup.nrat_date 2020-04-02 Close