Abstract
Combination of planar (thin-layer and paper) and column (gas and liquid) chromatographic techniques is discussed in detail. Use of gas chromatography as a sampling technique for thin-layer and paper chromatography is shown in the results as a common principle of a new two-dimensional chromatographic development. Liquid (column) chromatography, on its new level, is discussed in this connection, too. A critical search of adsorbents for thin-layer chromatography is given, and new sorbents are introduced. From some examples of R F values of several model substances measured on thin layers of organic porous polymers like Porapak Q, R, S, and T as well as on thin layers of porous glass beads with chemically modified surface like Durapaks, the prospect of applying such materials in thin-layer chromatography is shown and discussed.
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