The chromatography of gases and vapours. Part V. Partition analyses with columns of silicone 702 and of tritolyl phosphate

Abstract

The paper describes an apparatus for partition gas chromatography. Results obtained with this apparatus for the vapours of alcohols, esters, and aromatic hydrocarbons on columns of silicone 702 fluid and of tritolyl phosphate are presented as plots of corrected retention volumes per g. of column fluid against the inverse of the column temperature. A Atcvhols

Pollutant Removal from Wood and Coal Flue Gases by Soil Treatment

“…The height equivalent to a theoretical plate for HC in soils is 5 to 10 cm and the specific retention volume for benzene, for example, is about 300,000 per unit of soil mass. The specific retention volume, as a first approximation, equals the partition coefficient 14 and is an index of the soil's ability to adsorb gases. The partition coefficient decreases with soil moisture content 15 but, even if the partition coefficient decreased thousandfold from dry to field moisture contents, passage through 10 cm of soil would remove more than 99% of the benzene content of air.…”

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“…Identification of compounds as well as determination of their physico-chemical properties by using gas chromatography are always based on the determination of specific retention volumes of the analytes, as this quantity was formulated by Littlewood et al [1]:…”

Linear retention indices in gas chromatographic analysis: a review

“…Already in 1952, in their first publication on gas-liquid chromatography, A. T. James and A. J. P. Martin 1 mentioned that the retention volume of a pure substance on a certain gas chromatographic column is a characteristic value which could be used for the identification of sample components. Further, in 1955, Littlewood et al 2 introduced the specific retention volume as an attempt to make retention data independent of temperature, stationary phase film thickness, carrier gas flow rate and pressure drop across the column; however, this parameter was not practically applied. From the many proposals a general consensus has emerged favouring the use of relative retention data expressed with respect to the retention of a standard substance.…”