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The possibility of calculating reliable retention data for unavailable materials from a knowledge of molecular structure and functional group retention increments has been explored. Molecular shape has been found to be a complicating factor in several cases. However, it has been discovered that...
The influence of the construction material of the open tubular column on selectivity of the separation system has been studied. Selectivity was expressed in terms of relative volatility and separation factor. It has been found that the material of which the column is made will participate in the...
In the present paper, the relation between retention values and number of C atoms was investigated for some homologous series from C 14 −C 20 . A procedure is described for establishing a diagram, by means of which the n-saturated and mono-unsaturated fatty acids, as well as their methyl esters...
By using column chromatography with Sephadex G-10 as packing material, the active detergent in a detergent composition can be isolated in quantitative yield. Connection of a cation exchanger in series to the Sephadex column allows the active detergent to be determined in equivalents per gram....
A brief account is given of the requirements which a modern gas chromatograph must fulfil. Details are given of the extent to which this is the case with the Becker 409 system.
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