Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Ervin sz. Kováts"'
Autor:
Ervin sz. Kováts, Stephan Morgenthaler
Publikováno v:
Chromatographia. 70:831-837
We have studied the retention indices of 127 volatile substances on a C-78-paraffin and on its seven nearly isochor and isomorphous polar derivatives over a temperature range of 90-210 A degrees C. The retention index of a substance on the C-78 paraf
Autor:
Ervin sz. Kováts, Richárd Kresz
Publikováno v:
Journal of Chromatography A. 1113:206-219
In a paper published in 1992 [K.S. Reddy, J.-Cl. Dutoit, E.sz. Kovats, Pair-wise interactions by gas chromatography. I. Interaction free enthalpies of solutes with non-associated primary alcohol groups, J. Chromatogr. 609 (1992) 229] retention indice
Publikováno v:
Journal of Chromatography A. 1046:185-202
Gas–liquid distribution coefficients at ideal dilution in non-volatile solvents can be measured by gas chromatography. The numerical value of a coefficient depends on the choice of the concentration unit in the solvent and in the gas phase. The rel
Publikováno v:
Fluid Phase Equilibria. 210:57-67
Kovats’ retention indices were determined for 41 halogenated compounds by gas–liquid chromatography (GLC) at temperatures from 373 to 433 K using fused silica open tubular capillary columns coated with 19,24-dioctadecyldotetracontane (C78H158, C7
Publikováno v:
Journal of Chromatography A. 904:211-242
A polar type liquid having a secondary alcohol substituent on a branched alkane skeleton, SOH, was used as stationary phase. The molecules of this stationary phase are nearly isomorphous and isochor with those of the branched alkane, C 78 , elected a
Autor:
Ervin sz. Kováts, György Fóti
Publikováno v:
Journal of High Resolution Chromatography. 23:119-126
The problem of the calculation and interpretation of the net retention volume with a real gas as carrier is revisited. The properties of the carrier are described by a first order virial equation of state. The net retention volume of a solute is rela
Autor:
András Dallos, Ervin sz. Kováts
Publikováno v:
Analytical Chemistry. 71:3503-3512
It is shown that gas-liquid partition coefficients measured by gas chromatography on nonvolatile paraffin stationary phases at high temperatures allow estimation of gas-liquid partition coefficients of solutes at ambient temperatures in volatile alka
Publikováno v:
Analytical Chemistry. 68:2580-2589
The classical model for ion exchange chromatography is characterized by firmly adsorbed driving ions at the surface of the stationary phase in an amount required by electroneutrality and stoichiometric ion exchange between the bulk of the eluent elec
Autor:
Ervin sz. Kováts, Laszlo Jelinek
Publikováno v:
Langmuir. 10:4225-4231
Publikováno v:
Journal of Chromatography A. 630:1-20
The retention of 39 molecular probes was measured on chemically bonded dense layers of (3,3-dimethylbutyl)dimethylsiloxy (DMB) and tetradecyldimethylsiloxy (C 14 ) substituents on silica as a function of the composition of the binary acetonitrile-wat