Zobrazeno 1 - 10 of 16 pro vyhledávání: '"O. Yu. Nadzhafova"'
1
Optimization and use of composite coatings based on silicon oxide and polyvinylsulfonic acid for the adsorption-spectrophotometric determination of iron(II) and zinc(II) phenanthrolinates
Autor: E. V. Nebesnaya, M. V. Drozdova, V. B. Ishchenko, O. Yu. Nadzhafova
Publikováno v: Journal of Analytical Chemistry. 62:1136-1142
Conditions are optimized for preparing sol-gel modified composite films based on silicon oxide and polyvinylsulfonic acid in the presence of the Tween 20 nonionic surfactant as a template for the adsorption of Fe(II) and Zn(II) phenanthrolinates. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20eacba67a5d1e368e1ee87e007a999b
https://doi.org/10.1134/s1061934807120064
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2
[Untitled]
Autor: O. Yu. Nadzhafova, V. V. Sukhan, S. V. Lagodzinskaya
Publikováno v: Journal of Analytical Chemistry. 56:178-181
A test paper for the determination of aluminum(III) was developed on the basis of chromatographic cellulose paper impregnated with Chrome Azurol S. The test paper was applied to monitoring the concentration of aluminum(III) in potable and natural wat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f37fa226c13b21c285c282c7b357f539
https://doi.org/10.1023/a:1009411106043
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3
The nature of the binding of high-molecular weight aminoammonium and quaternary ammonium salts with the amorphous silica surface
Autor: V. V. Sukhan, O. A. Zaporozhets, O.V Shulga, Vladimir V. Turov, O. Yu. Nadzhafova
Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 168:103-108
The adsorption of high-molecular weight aminoammonium salt (C10H21)2N(CH2)2N(C10H21)3I and quaternary ammonium salts with different structure of hydrophilic and hydrophobic areas: (CH3)(C10H21)2N(CH2)2N(C10H21)3I2, (C10H21)3N(CH2)6N(C10H21)3I2 and (C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d6f5c84d7c1830afc0776846bfda37c
https://doi.org/10.1016/s0927-7757(99)00492-6
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4
X-ray fluorescence determination of mobile forms of Cu, Zn and Co in soils with preconcentration on silica gel modified by didecylaminoethyl-β-tridecylammonium iodide
Autor: M.M Tananaiko, A.B. Blank, N.I. Shevtsov, K. N. Belikov, O. Yu. Nadzhafova
Publikováno v: Analytica Chimica Acta. 383:277-281
The possibility of recovery of Cu, Zn and Co from highly mineralized acetate–ammonia soil extracts is investigated. Optimum sorption conditions are determined. The influence of foreign ions on the completeness of the sorption is studied. It is show
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::edfebbb35810a651073d7d4c2091a525
https://doi.org/10.1016/s0003-2670(98)00816-2
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5
Solid-phase reagents for the determination of anionic surfactants in water
Autor: T. Ye Keda, O. A. Zaporozhets, V. V. Verba, S. A. Dolenko, V. V. Sukhan, O. Yu. Nadzhafova
Publikováno v: The Analyst. 123:1583-1586
Sorption–spectrometric methods for the determination of anionic surfactants (A Surf) in natural and waste water using silica gel (SG) loaded with ion-pair associates of high molecular weight quaternary ammonium salts (QAS) and anionic dyes were dev
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68cf0bbc06590412237751cda4a7ca2c
https://doi.org/10.1039/a708811f
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6
Interaction of water-insoluble quaternary ammonium salts with the hydrated silica surface
Autor: O. A. Zaporozhets, O. Yu. Nadzhafova, V. V. Sukhan, Vladimir V. Turov
Publikováno v: Theoretical and Experimental Chemistry. 32:331-334
PMR spectroscopy of adsorbed molecules upon freeze-out of the liquid phase was used to study the interaction of high-molecular-weight quaternary ammonium salts differing in the structure of the hydrophilic part of the molecule and the distance betwee
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::739e314e34ad43dea98534e097e909f3
https://doi.org/10.1007/bf01374127
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7
Analytical Application of Silica Gel Modified with Didecylaminoethyl-β-Tridecylammonium Iodide
Autor: A.I. Zubenko, O. A. Zaporozhets, O. Yu. Nadzhafova, V. V. Sukhan
Publikováno v: Talanta. 41:2067-2071
Sorption of a high molecular weight quaternary ammonium salt, didecylaminoethyl-beta-tridecylammonium iodide (DDATD) on different types of sorbents was investigated. The nature of reagent adsorption on silica gel was examined by spectroscopic and com
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5142e1f83fa3489a374bc183d8298b48
https://doi.org/10.1016/0039-9140(94)00180-4
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8
Akademický článek
Composite Silica-Based Films as Platforms for Electrochemical Sensors.
Autor: Tananaiko O; Department of Analytical Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska Str., 64, Kyiv, Ukraine, 01601., Walcarius A; Université de Lorraine, CNRS, LCPME, 54000, Nancy, France.
Publikováno v: Chemical record (New York, N.Y.) [Chem Rec] 2024 Feb; Vol. 24 (2), pp. e202300194. Date of Electronic Publication: 2023 Sep 22.
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9
Akademický článek
Functional material based on polyvinylalcohol hydrogel for absorption spectrophotometry.
Autor: Ermolenko, Yu.1, Novikova, N.1, Tsareva, E.1
Publikováno v: Fibre Chemistry. Jul2012, Vol. 44 Issue 2, p106-110. 5p. 1 Black and White Photograph, 1 Diagram, 2 Graphs.
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