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Preconcentration of samples in sandwich tanks for continuous thin-layer chromatography |
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| Authors: | E Soczewi&#x;ski G Matysik |
| Institution: | E. Soczewiński,G. Matysik |
| Abstract: | It is demonstrated that horizontai sandwich tank with two cover plates can be used to preconcentrate sample solutions. Narrow sharply-defined starting zones are obtained just outside the smaller cover plate when the series of spots of the sample solution are applied on the thin layer and predeveloped with a volatile solvent. After evaporation of the solvent, the whole area of the TLC-plate is covered with two plates and developed with a suitable solvent. |
| Keywords: | Thin-layer Chromatography TLC Improvement of sampling by preconcentration Tenfold enrichment (and more) possible by using a sandwich tank principle in continuous mode technique |