Mit Sorptionsmitteln gefüllte Papiere als Dünnschicht-Fertigplatten

Summary Paper loses the properties required for use in partition chromatography with increasing degree of grinding of the cellulose from which the paper is made. For example, paper made from a cellulose mixture consisting of 80% (by weight) Aspa-Birkesulfat and 20% Fichtesulfit adsorbs water to a height of 10 cm after 15 min in the case of a degree of grinding of 14.8°SR (Schoppe-Riegler value) and to a height of only 0.9 cm in the case of a value of 73.3°SR. By adding 50–65% (by weight — based on paper) of adsorbents such as Kieselgel G, Kieselgur G, a mixture of both, Aluminiumoxid G and pure silica gel to the finely ground cellulose mixture in the paper-making process, papers are obtained which adsorb water to a height of 7.6 to 9.3 cm. These filled papers are well suited as thin-layer chromatography plates for adsorption chromatography, as was shown by comparative trials with conventional plates using optical brighteners and 2 solvent systems.

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Herrn Dr.E. Becker zum 65. Geburtstag gewidmet.