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1.
Ya. I. Korenman N. N. Popova T. A. Kuchmenko 《Russian Journal of Applied Chemistry》2007,80(6):955-959
The quantitative and kinetic parameters of sorption of formic and acetic acids on thin films of various modifiers of piezoelectric quartz resonator electrodes are determined. Parameters of film formation on the electrodes (application procedure and thickness) are optimized. Methods for joint and separate determination of formic and acetic acids in air by piezoelectric microweighing with single- and double-sensor devices are developed. 相似文献
2.
Previously unknown solid complexes of Ti(IV), Zr(IV), and Zn(II) with chrysin were isolated, identified, and studied by thermogravimetric analysis and by UV-Vis, IR, and NMR spectroscopy. 相似文献
3.
Ya. I. Korenman N. N. Popova T. A. Kuchmenko S. M. Suleimanov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2006,80(12):1993-1998
The effect of the morphology of polymer films on the distribution of volatile C1–C4 carboxylic acids in the sorbent-gas system is discussed. The efficiency of sorption of vapors of formic, acetic, propionic, and butyric acids on films of polyethylene glycol esters of various structures formed on the electrodes of a piezoquartz resonator by means of static evaporation of a drop and immersion of the resonator into a sorbent solution is evaluated. 相似文献
4.
Extraction of phenol- and naphtholsulfonic acids from aqueous salt solutions in the presence of a surfactant, N-cetylpyridinium chloride, with hexane, ethylbenzene, and acetone-diacetone alcohol is studied.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 1, 2005, pp. 79–82.Original Russian Text Copyright © 2005 by Korenman, Gubin, Sukhanov. 相似文献
5.
6.
G.Ya. Korenman 《Hyperfine Interactions》1999,119(1-4):227-233
Effect of medium density on shift and broadening of (
) spectral lines is considered in the framework of binary-collision approximation with an effective (
)–He potential including the long-range attraction and short-range repulsion. Quantum calculations of the scattering phase
shifts at reasonable values of the potential parameters allow to explain the main features of the observed density effect
on the shape of (
) spectral lines in low-temperature helium.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
7.
Ya. I. Korenman E. I. Mel’nikova S. I. Niftaliev S. E. Boeva A. A. Selivanova E. S. Rudnichenko E. V. Bogdanova 《Russian Journal of Applied Chemistry》2009,82(8):1380-1383
System of sensors operating on the piezoquartz microweighing principle was employed to forecast the storage life of food products
based on milk serum. Signals from the sensors are integrated into an output signal forming a recognizable “visual pattern”
of an odor. 相似文献
8.
The effects of mixed liquid stationary phases based on tributyl phosphate (TBP) and dinonyl phthalate (DNP) with didecyl sebacate
and pentyl acetate additives on the distribution ratios of phenol, the retention, the capacity, the resolving power, and the
stability of extraction-chromatographic columns in the preconcentration of phenol from water were examined. Stationary phases
based on TBP can be used in the analysis of large-volume samples with phenol concentrations at a level of 1 to 2.5 of MPC.
Stationary phases based on DNP were recommended for the analysis of water samples of smaller volume with higher concentrations
of phenol. 相似文献
9.
O. A. Pakhomova Ya. I. Korenman N. Ya. Mokshina S. I. Niftaliev 《Russian Journal of Applied Chemistry》2010,83(11):1940-1943
Conditions for extraction separation of tyrosine and glycine in extracts based on a mixture of hydrophilic solvents were developed.
The effect of the content of a salting-out agent on the distribution coefficients of tyrosine and glycine in a system constituted
by a mixture of hydrophilic solvents (n-butanol-ethyl acetate-acetone) and an aqueous-salt solution was studied. Mathematical methods of experiment design were used
to optimize the separation conditions of amino acids. 相似文献
10.
Ya. I. Korenman A. V. Zykov N. Ya. Mokshina 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2011,85(5):862-865
General regularities of the liquid-liquid distribution of B1, B2, B6, and B12 vitamins in aqueous polyethylene glycol (PEG-2000, PEG-5000) solution-aqueous salt solution systems are studied. The influence
of the salting-out agent, the concentration of the polymer, and its molecular weight on the distribution coefficients and
recovery factors of the vitamins are considered. Equations relating the distribution coefficients (log D) to the polymer concentration are derived. 相似文献