| Popis: |
The dependence of the elution patterns of o , m - and p-xylenes and ethylbenzene on the β-cyclodextrin concentration in the formamide stationary phase deposited on Celite has been studied in the temperature range 50–70°C. It has been found that stereoselective molecular inclusion processes take place in the formamide medium, thus, modifying its chromatographic properties. Such systems result in a gain in stereoselectivity while at the same time retaining all the advantages of partition gas chromatography. The conditions for complete separation of the investigated compounds have been elaborated. |
