Издательство Taylor&Francis по журналам "Separation Science"
Отображаемые элементы 1-20 из 313
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(Taylor & Francis Group, 1966-01-01)The field of axial and radial dispersion of unsorbed bands in columns or beds packed with spherical particles is reviewed and it is shown that there is broad agreement between various workers: at low reduced velocities ...
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(Taylor & Francis Group, 1972-10-01)In displacement development of mixture of very closely related species on ion exchange columns, determination of the distance between the band middle and the point of initial composition permits an evaluation of HETP. This ...
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(Taylor & Francis Group, 1966-01-01)The most accurate methods for determining the distribution of radioactivity on thin-layer chromatograms are zonal scanning (1,2) and strip scanning (3). The present communication records the comparison of these two methods ...
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(Taylor & Francis Group, 1973-12-01)A phenomenological model based on a set of partial differential equations and boundary conditions is proposed for chromatography and, in particular, for gel permeation chromatography. The intractable boundary value problem, ...
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(Taylor & Francis Group, 1974-06-01)Separation of rhenium(VII) from molybdenum, vanadium, chromium, tungsten, iron, cobalt, nickel, copper, manganese, iridium, ruthenium, and uranium is achieved by solvent extraction with 4-methyl-2-pentanol either from ...
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(Taylor & Francis Group, 1971-06-01)Extremely high resolution can be attained with correspondingly long columns made practicable by propelling the carrier gas with a driving force other than inlet pressure.
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(Taylor & Francis Group, 1968-02-01)The plate-height behavior of open tubular columns, for both gases and liquids, has been studied fundamentally in the turbulent flow region. Appriate analytical expressions have been established on the basis of a purely ...
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(Taylor & Francis Group, 1975-02-01)The effects of membrane separation parameters using liquid/liquid dialysis under idealized conditions and using hollow fiber geometry were calculated with the aid of a computer. These calculations were carried out for both ...
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(Taylor & Francis Group, 1976-01-01)By the use of a permeable, but immiscible, liquid layer in a liquid thermal diffusion column, it is possible to reduce remixing effects and hence improve separation. The technique is illustrated by using water as the ...
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(Taylor & Francis Group, 1977-08-01)The chromatographic analysis of capsaicinoids and of oleoresin capsicum can indicate relative amounts of the pungent components and the sources of the samples. The present work describes gas chromatographic analyses of ...
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(Taylor & Francis Group, 1972-08-01)The basic definition of qualitative analytical efficiency has been evaluated in the light of recent advances in automated numerical analysis. The low resolution region R < 1.0 is explored theoretically, and it is shown ...
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(Taylor & Francis Group, 1977-02-01)The theory of temperature programming has been reexamined. It is shown that a linear program leads to an explicit relation for the retention temperature in terms of the inverse exponential integral. Numerical examples are ...
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(Taylor & Francis Group, 1968-02-01)The decrease in the plate height with increasing Reynolds number, predicted by theory, has been verified for gas chromatography in open tubular columns. It has been shown that this decrease is most pronounced when the mass ...
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(Taylor & Francis Group, 1969-12-01)By using a relatively new liquid phase of moderate polarity (OV-225, Supelco Inc., Bellefonte, Pa.), we have significantly improved the gas-liquid chromatographic analyses of certain steroid hormones from human plasma. ...
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(Taylor & Francis Group, 1970-12-01)We have developed an inexpensive device which, when used with a Technicon proportioning pump, will prepare reproducible density gradients of viscous solutions.
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(Taylor & Francis Group, 1974-02-01)The effects of high pressure (up to 3600 kg/cm2) on the distribution coefficients of simple and complex anions have been studied on a strongly basic anion exchange resin. The retention volumes of Br−, Cl−, and NO2− were ...
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(Taylor & Francis Group, 1967-01-01)In this paper a highly selective method is described for the separation of micro- and milligram amounts of germanium from arsenic(III and V) as well as from many other metal ions by means of the strongly basic anion-exchange ...
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(Taylor & Francis Group, 1976-01-01)We consider the utility of the usual definition of the resolution of two peaks in chromatography in terms of the height of the valley between the two peaks. We show that over a wide range of relative amounts and bandwidths, ...
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(Taylor & Francis Group, 1966-01-01)Based on the assumptions that the adsorption of a binary gas mixture may be described by Langmuir isotherms and that the rate of diffusion into the interior of the adsorbent is proportional to the gradient in chemical ...
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(Taylor & Francis Group, 1976-01-01)Straw pretreated with concentrated nitric acid has been used as an adsorbent in columns. This adsorbent has been shown to possess high adsorbability and high affinity for thorium, and it is based on this property that the ...
Отображаемые элементы 1-20 из 313