Chinese J. Pharm. Anal. 8, 196-200 (1988) (Yaowu Fenxi Zazhi). Application of six Chinese traditional patent formulations without pretreatment, on silica by TAS technique. Development with various solvent systems. Detection by spraying with various reagents.

J. Planar Chromatogr. 18, 132-140 (2005). Detailed description of a semi-automatic sample applicator. All components are commercially available at low cost; the process of assembly is very simple, especially the spraying head and the applicator mechanism. The type and the position of the spraying head, the gas pressure, and the application speed were tested. The relative standard deviation of band length and band width are < 1 % and < 2.5 %, respectively. The application speed is an important factor: the faster the application speed, the better.

J. Planar Chromatogr. 3, 10-14 (1990). Description of a new solid phase sample application method and application device. It enables regular sample applications in the entire cross section of the preparative layer with the advantage of in situ sample concentration and clean up. With the proposed device the sample can be applied to improve the starting situation for a preparative planar chromatographic separation, independent of whether the migration of the mobile phase is achieved by capillary action or forced flow phase is achieved by capillary action or forced flow (OPLC, RPC). Chromatography of crude plant extracts from leaves of Malva silvestris and roots of Heracleum sphondylium.

J. Planar Chromatogr. 19, 81-85 (2006). A simple device is proposed for chromatographic separation with a traditional plate under the condition of a closed adsorbent layer (TLC-CL). Compared with traditional TLC the new variant has certain advantages, it takes for example 20-30 % less time; the efficiency of TLC-CL was, however, usually less than that of traditional TLC.

Labo 21, 7-12 (1990). Description of an additional method for quantification in planar chromatography offering qualified quantitative analysis before, with or instead of HPLC with one or many samples simultaneously. The instrumental requirements can be compared with HPLC.

J. Planar Chromatogr. 6, 463-466 (1993). Thermogravimetry for studying the distribution of different TLC impregnating reagents, such as paraffin oil, n-octanol, a quaternary ammonium compound (tricaprylmethylammonium chloride, TCMA), ethylenediaminetetraacetic acid (EDTA), and boric acid on silica gel layers.

J. Planar Chromatogr. 7, 157-159 (1994). TLC of morphine (as dansyl derivative, 5 - 80 ng) and 7-aminoflunitrazepam (as fluorescamin derivative, 100 pg - 2.5 ng); fluorescence enhancement was performed by dipping the developed plate (no details) in a solution of Triton X-100 in a 1:7 mixture of chloroform and hexane. Pre-chromatographic reactions on the TLC plate using a commercially available sampler.

J. AOAC Int. 78, 1141-1144 (1995). TLC of ivermectin after purification and derivatization with trifluoroacetic anhydride on silica with chloroform - ethyl acetate 3:1. Detection after air-drying and dipping in a tank containing 10% paraffin in n-hexane under UV 366 nm. Ivermectin appears as 2 blue spots, one of which is of much higher intensity than the other. The method allows detection of residues in swine and cattle meat, liver, and fat at levels as low as 5 µg/kg.