title: [Thin-layer chromatographic demonstration of the herbicide zenkor].
abstract: Established were the thin-layer chromatography conditions for the demonstration of the herbicide Zenkor as a pure substance and a preparation. Comparative experiments were carried out applying Thomson and Stanley's thin-layer chromatography conditions and the authors' personal ones. Most adequate proved to be the following conditions: sorbent-Kieselgel 60F 254 (Merck); solvent -- chloroform: 1,4-dioxan (9:1); developer -- ultraviolet light (authors' technique). Essential with this method is the preliminary (prior to apply the pure substances on the thin-layer chromatographic plaque) moving of the plaque in the indicated mobile phase (authors' technique). Under these thin-layer chromatography conditions work is made feasible and the method is fast and simple, achieving high sensitivity -- 0.5 mug Zenkor.
mesh_terms: D002031:Bulgaria; D002855:Chromatography, Thin Layer / Q000379:methods*; D006540:Herbicides / Q000032:analysis*; D007202:Indicators and Reagents; D014227:Triazines; D014466:Ultraviolet Rays
chemical_list: D006540:Herbicides; D007202:Indicators and Reagents; D014227:Triazines
vernacular_title: Tunkosloĭnokhromatografsko dokazvane na kherbitsida zenkor