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Focuses on the offer of high separation power by modern planar chromatographic techniques. Application of two-dimensional planar arrangements, chromatoplates with different properties; Potential of multidimensional planar chromatographic techniques.

Focuses on the development of column switching in liquid chromatography (LC) in many configurations. Discrimination of precolumn switching from coupled-column; Packing of precolumns with materials of larger particle size; Evidence of the high separation power of the analytical column of LC.

Focuses on separation efficiency of capillary gas chromatography, complemented by hardware and detectors. Complexity of resolution on any chromatographic phase; Exacerbation of compounds present at trace amounts; Use of selective element specific detectors for positive compound identification.

Discusses the development of a system for automated off-line packed column supercritical fluid chromatography for characterization of triglycerides (TGs) in vegetable oils. Separation of the TGs according to degree of saturation; Use of silver-loaded stationary phase for separation in the second dimension; Offer of information on TG composition of vegetable oils from orthogonal separation mechanisms.

Reports on the advantage of two-dimensional gas chromatography for separation of complex mixtures. Separation of the sample on a first capillary column; Distribution of sample molecules over a limited space; Optimization of the frequency of modulation.