Zobrazeno 1 - 10
of 11
pro vyhledávání: '"E. V. Elsuf'ev"'
Autor:
Anatoliy K. Trofimchuk, Elena V. Borodina, E. V. Elsuf’ev, Segey I. Metelitsa, Victoriya V. Parfenova, Vladimir N. Losev
Publikováno v:
Separation Science and Technology. 55:2659-2669
Silica gel chemically modified with dithiocarbamate groups (DTCS) was used for separation and preconcentration of precious metals and their subsequent determination in geological samples an...
Autor:
Elena V. Borodina, E. V. Elsuf’ev, Natalya Maznyak, Anatoliy К. Trofimchuk, Vladimir N. Losev, Olga V. Buyko
Publikováno v:
Minerals, Vol 11, Iss 481, p 481 (2021)
Minerals
Volume 11
Issue 5
Minerals
Volume 11
Issue 5
Silicas chemically modified with a number of sulfur-containing groups (mercaptopropyl, mercaptophenyl, dipropyl disulfide, thiadiazole thiol, dithiocarbamate and thiourea derivatives) were proposed for the separation and preconcentration of precious
Autor:
Vladimir N. Losev, E. V. Elsuf’ev, S. L. Didukh, O. V. Belousov, V. V. Parfenova, O. V. Buiko, N. G. Maksimov
Publikováno v:
Journal of Analytical Chemistry. 73:325-333
Adsorbents based on silica chemically modified by sulfur-containing groups (dithiocarbamate, thiodiazolethiol, mercaptophenyl, and aminobenzothiazole) quantitatively extract (recovery ≥99%) platinum( IV) from solutions ranging from 4 M HCl to pH 6.
Publikováno v:
METHODS AND OBJECTS OF CHEMICAL ANALYSIS. 13:71-78
Publikováno v:
Journal of Analytical Chemistry. 70:781-787
The adsorption of osmium(VIII) from sulfuric and hydrochloric acid solutions and gas phase on silicas chemically modified by dithiocarbamate, thiodiazolthiol, mercaptophenylpropylurea, and aminobenzothiazolpropyl groups is studied. A procedure is dev
Publikováno v:
Journal of Analytical Chemistry. 67:772-777
Application of silica chemically modified with dithiocarbamate groups (DTCS) has been proposed for the low-temperature sorption-luminescence determination of platinum. The establishment of a sorption equilibrium in the platinum(IV) and platinum(II) e
Publikováno v:
Journal of Analytical Chemistry. 64:903-909
Silica gel chemically modified with N-(1,3,4-thiodiazole-2-thiol)-N′-propylurea extracted gold(III) from solutions in the range of 6 M HCl-pH 8 and silver(I) from nitric acid solutions in the range of 6 M HNO3-pH 8 and 1–2 M HCl at 20°C with 99.
Publikováno v:
Journal of Analytical Chemistry. 64:346-349
Silica gel chemically modified with 1,3,4-thiadiazol-2-thiol groups recovered 99% of the copper(II) from solutions of pH 4–6; the adsorption equilibrium was attained in no more than 5 minutes. During irradiation with ultraviolet light, a yellow-ora
Publikováno v:
Russian Journal of Inorganic Chemistry. 51:565-568
The sorption of silver(I) from nitric and hydrochloric acid solutions with silica gels chemically modified with mercaptopropyl groups (MPSG) and dipropyl disulfide groups (DDSG) has been studied. For nitric acid solutions, the highest silver(I) recov
Publikováno v:
Journal of Analytical Chemistry. 60:341-344
Silica gel chemically modified with mercaptopropyl groups extracts silver(I) from solutions in the acidity ranges from 4 M HNO3 to pH 8 and from 0.01 M HCl to pH 7. The time it takes to attain a sorption equilibrium is no more than 2 min; distributio