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Information × Registration Number 0311U003980, 0107U010943 , R & D reports Title Synthesis of the new chemically modified adsorbents for solid phase exstraction of metal ions and molecules popup.stage_title Розробка методів передконцентрування іонів металів з використанням нових комплексоутворюючих адсорбентів Head Tertykh Valentin Anatolievich, Registration Date 15-11-2011 Organization Zhytomyr State University named after Ivan Franko popup.description2 The objects of the research are chemically modified silicas with the covalently fixed 8-hydroquinoline, 4 (2 pyridylazo) resorcinol, 1(2 pyridylazo)-2 naphthol and composites of the polyaniline with the precipitated silicas. The aim of the study is the research of the adsorptive characteristics of the modified adsorbing materials regarding the ions of the heavy metals and the investigation dealing with the metal complexes structure with the organic reagents on the silicas surface. The methods of the research are the atomic absorption spectrography, the potentiometric analysis, the electron spectroscopy of the diffusive reflection. The work continues the research of the sorption properties of the chemically modified adsorbing materials, synthesized according to the single-stage aminomethylation. The structure of the complexes Cu2+ with the inoculated reagents 8 hydroquinoline, 4 (2 pyridylazo) resorcinol and 1-(2-pyridylazo)-2-naphthol was investigated via EPR and electron spectroscopy methods. The X-ray fluorescence possibility determining the ions trace amounts of the toxic metals directly in the adsorbent phase after metal ions extraction out of the solutions in the dynamic regime of the adsorption was established. The determination of the metal ions out of the aqueous solution in the process of their joint presence in the standardized test solutions and the analysis of the natural objects are initiated. The investigation results showed that the presence of the foreign ions (excesses in 10-100 times) influences on the metal ions extraction out of the aqueous solutions. It was established that the pH environment essentially influences upon the metal ions adsorption (Zn2+, Cu2+, Ni2+) on the shungite, saponite and clinoptiolite natural adsorbents. It was stated upon the electron spectra of the diffusive reflection of the metal complexes with the molecules of the organic reagents that the way coordinating the metal ions on the silica gel surface is analogous to their interaction with these reagents in the solutions. Within the study the students and magistrates' scientific researches are carried out on the chemistry department. Product Description popup.authors Вознюк Володимир Іванович Денисюк Роман Олександрович Кичкирук Ольга Юріївна Климчук Олена Олександрівна Кусяк Наталія Володимирівна Прохорчук Олена Ульянівна popup.nrat_date 2020-04-02 Close