Abstract
The development of contemporary gas chromatography is closely connected with improvements to packing materials and columns. New adsorbents obtained on the basis of treating silica gel with organic compounds in a high-frequency, low-temperature plasma give real possibilities in this direction. The influence of the time of exposure in the plasma on the gas chromatographic properties of packings such as selectivity, efficiency and retention was investigated. For this purpose modified silica gel of particle size 63–71 μm was used as a packing for short gas chromatographic columns (20 × 0.2 cm I.D.). It was found that silica gels modified in plasma, with low degrees of coverage of their surface with polymer, have good selectivity and columns packed with them show high efficiency. The results confirm the opinion that the columns under consideration could be used succesfully instead of the usual 1–2-m long packed columns.
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