Zobrazeno 1 - 10
of 22
pro vyhledávání: '"N. O. Mchedlov‐Petrosyan"'
Publikováno v:
Colloid Journal. 78:647-651
The features of premicellar aggregation in aqueous solutions of sodium n-octyl, n-nonyl, and n-decyl sulfonate, as well as sodium n-dodecyl sulfate, at a constant ionic strength maintained by adding NaCl are studied by potentiometry using modified io
Publikováno v:
Kharkov University Bulletin Chemical Series.
Autor:
E. A. Reshetnyak, L. P. Loginova, N. A. Nikitina, O. S. Chernysheva, N. O. Mchedlov-Petrosyan
Publikováno v:
Colloid Journal. 76:358-365
Potentiometry has been employed to determine the activity coefficients of n-decyl sulfate and n-alkyl(C5–C10)sulfonate ions in aqueous solutions of their sodium salts containing NaCl or Na2SO4 as a background electrolyte. The selectivity factors ha
Publikováno v:
Kharkov University Bulletin Chemical Series.
Publikováno v:
Russian Journal of General Chemistry. 79:1859-1889
The survey is dedicated to the critical analysis of different experimental methods of determining the dissociation constants (Ka) of organic acids in solutions. Advantages and disadvantages of the contemporary methods of rapid analysis used in bioche
Publikováno v:
Russian Journal of General Chemistry. 79:1437-1445
Ionization constants of fluorescein and six its derivatives in water micellar solutions of zwitterionic surfactant, N-cetyl-N,N-dimethyl-3-ammonium-1-propanesulfonate were evaluated spectrophotometrically. On the basis of absorption spectra of dyes c
Publikováno v:
Russian Journal of Physical Chemistry A. 82:1434-1437
A procedure is suggested for determining the distribution constants of methyl orange dye between water and direct microemulsion droplets (N-cetylpyridinium chloride + 1-pentanol + benzene in water) as the disperse phase, which allows one to circumven
Publikováno v:
Russian Journal of Physical Chemistry A. 82:1451-1455
The solubility of cetyltrimethylammonium perchlorate (CTAP) in propan-2-ol and its mixtures with water was determined by the isothermal saturation method over the whole composition range at 278.15–308.15 K. The solubility products and total standar
Autor:
V. I. Alekseeva, N. O. Mchedlov-Petrosyan, N. A. Vodolazkaya, A. G. Yakubovskaya, O. N. Bezkrovnaya, L. P. Savvina
Publikováno v:
Russian Journal of Applied Chemistry. 81:696-703
Spectral and protolytic properties of two hydrophobic rhodamine dyes and fluorescein n-decyl ester were studied in Langmuir-Blodgett films based on a polyamido acid. The possibility of weakening the concentration quenching of rhodamine dye fluorescen
Publikováno v:
Russian Journal of General Chemistry. 76:1607-1617
The dissociation constants of fluorescein halo derivatives containing substituents in the xanthene ring and/or in the phthalic acid moiety were determined in 91.4 wt % aqueous ethanol. The tautomerism of the dyes was inferred from the electronic abso