Výsledky vyhledávání - "A. A. Velikorodnyi"

Autor: A. A. Velikorodnyi, Elena I. Morosanova, E. A. Reznikova

Publikováno v: Journal of Analytical Chemistry. 56:173-177

The effect of Cu(II), Ti(IV), Bi(III), and Fe(III) on the reduction of the Vavele reagent (a mixture of series 12 and 18 phosphomolybdic acids) with ascorbic acids and hydrazines was studied. It was found that, in the presence of copper(II), the Vave

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ac210526d9af59cb2d8fab437ae33fb
https://doi.org/10.1023/a:1009459021972

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[Untitled]

Autor: Yu. A. Zolotov, O. V. Myshlyakova, Elena I. Morosanova, A. A. Velikorodnyi

Publikováno v: Journal of Analytical Chemistry. 56:284-289

Noncovalent immobilization of Arsenazo I, Alizarin Red, Xylenol Orange, and diphenylcarbazone by incorporation into silicic acid xerogels and modification of silica gels was studied, and procedures for determining fluoride and chloride ions by solid-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf107d573071fb6708d8070580474ca3
https://doi.org/10.1023/a:1009418909736

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Test determination of aniline in solutions based on azo coupling with analytical reagents incorporated into silicic acid xerogels

Autor: A. A. Velikorodnyi, Elena I. Morosanova

Publikováno v: Journal of Analytical Chemistry. 55:994-999

Silicic acid xerogels modified with 1-naphthol, 2-naphthol, 8-hydroxyquinoline, 2,7-dihydroxynaphthalene,N-(l-napthyl)ethylenediamine andp-hydroxydiphenyl were synthesized. It was shown that the immobilized reagents can participate in reactions of az

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e20b40d7fb9c1768bd632a26f30405b
https://doi.org/10.1007/bf02756094

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Silica-based xerogels modified with cobalt(III): Determination of naphthols in solutions by solid-phase spectrophotometry

Autor: Elena I. Morosanova, A. A. Velikorodnyi

Publikováno v: Journal of Analytical Chemistry. 55:724-731

Silica-based xerogels modified with various concentrations of cobalt ions were prepared. The redox and complexing properties of immobilized cobalt ions were studied. Modified xerogels were used for determining naphthols in solutions by solid-phase sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ab67952641a84dd550e0bb21def42e2
https://doi.org/10.1007/bf02757905

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Xerogels doped with 1-(2-pyridylazo)-2-naphthol and Xylenol Orange: Indicator tubes and indicator powders for determining copper(II) and iron(III) in solution

Autor: E. A. Puganova, A. A. Velikorodnyi, Elena I. Morosanova, Yu. A. Zolotov, I. V. Nikulin

Publikováno v: Journal of Analytical Chemistry. 55:486-491

Silica-based xerogels doped with l-(2-pyrilylazo)-2-naphthol and Xylenol Orange were prepared. The xerogels differ in the specific surface and the reagent concentration. Modified xerogels were used as indicator powders for determining copper(II) and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57d32f2c9882b91f725c47c759892d75
https://doi.org/10.1007/bf02757490

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Xerogels doped with phosphomolybdic heteropoly compounds: Indicator tubes and indicator powders for determining hydrazines and tin(II) in solution

Autor: E. A. Reznikova, N. M. Kuz'min, A. A. Velikorodnyi, Elena I. Morosanova

Publikováno v: Journal of Analytical Chemistry. 55:378-383

Xerogels were prepared on the basis of silicon dioxide and doped with phosphomolybdic heteropoly acid, its ammonium salt, and the Vavele reagent. Reactions of modified xerogels with hydrazines, ascorbic acid, hydroquinone, iodide ion, and iron(II) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09b629fa8bd5755e4f07ebf43dfbd372
https://doi.org/10.1007/bf02757776

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[Untitled]

Autor: Yu. A. Zolotov, Elena I. Morosanova, A. A. Velikorodnyi, V. I. Skornyakov

Publikováno v: Journal of Analytical Chemistry. 55:1136-1141

The use of microwave radiation for drying wet silicic acid gels significantly shortens the time of preparation of dry gels, or xerogels. The specific surface area of xerogels increases from 492 to 963 m2/g as the power of microwave radiation is incre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a05bb11e78f0d5383c318269ac1d585
https://doi.org/10.1023/a:1026654701709

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Magnetic anomalies of Na3C60

Autor: Elizaveta A. Konstantinova, Vladimir G. Kytin, A. V. Krechetov, V. A. Kulbachinskii, V. P. Tarasov, Yu. B. Muravlev, Yu. A. Velikorodnyi, Boris M. Bulychev

Publikováno v: Journal of Physics and Chemistry of Solids. 69:1221-1223

Sodium fullerides Na 3 C 60 have been synthesized by liquid phase reaction and investigated by X-ray diffraction (XRD), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR) and differential thermal analysis (DTA). The crystal struc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ebf073ebd337b563b06ffcd50e170044
https://doi.org/10.1016/j.jpcs.2007.10.103

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