CBS 88, 14-15 (2002). HPTLC of mushroom extracts on silica gel with dichloromethane - ethyl acetate - methanol 3:1:1 and HPTLC of hydroquinone, rutin, resorcinol, and ascorbic acid on silica gel with toluene - methanol - acetic acid 45:8:4 over 80 mm with chamber saturation. Determination of bioactivity with DPPH-biotest by spraying with 5 mg (2,2-di-(4-tert-octylphenol)-1-picrylhydrazyl in 10 mL acetone.

Anal. Chem. 78, 4938-4934 (see correction p.6283) (2006). Modest modifications to the atmospheric sampling capillary of a commercial electrospray mass spectrometer are described. Discussions pf upgrades to a developed surface positioning control software package used to enable the automated sampling and imaging of analytes on and within large area surface substrates using desorption electrospray ionization mass spectrometry. Application of rhodamine B, 6G and 123 on TLC RP-8 plates with methanol – water containing 500 mM ammonium acetate 31. Examples are shown for user-defined spot sampling from separated bands on a TLC plate, scanning of the complete development lane, or imaging of analyte bands in a development lane.

Anal. Chem. 55, 2120-2126 (1983). TLC of long-chain alkylbenzemes on silica impregnated with 15 % AgNO3 with hexane. Location by visualization a standard band by spraying with 2',7'-dichlorofluorescein in methanol. Subsequent analysis of the eluate by GC. Comparison of TLC/GC technique with GC/MS.

J. Chromatogr. 703, 573-612 (1995). A review with 194 references on the multidimensionality in planar chromatography, including unidimensional multiple development and two-dimensional controlled or forced flow of the mobile phase, mobile phase gradients and system automation outlining the theoretical consideration, the method development, instrumentation and application. Discussion of the potential of interfacing column and planar chromatographic methods for complex mixture analysis, component identification and trace analysis.

Multi-stage development over a constant distance. J. Chromatogr. A 726, 185-192 (1996). Presentation of a theoretical model of multiple development over a constant distance, which is verified with experimental results. Calculation of the final Rf values by computer program for known retention vs. eluent composition relationships for the solutes. Comparison of the predicted and experimental Rf values.

J. Chromatogr. A 1460, 181-189 (2016). Development of an online simultaneous TLC-MS analysis system, liquid thin layer chromatography–mass spectrometry (LTLC-MS), using regular TLC plates combined with a newly developed ambient ionization method, glow discharge-matrix assisted infrared desorption ionization (GD-MAIRDI), and forced-flow TLC (FFTLC) technique. This guarantees that the MS detection process does not disturb the TLC separation process throughout the analysis, but successfully synchronizes the TLC separation and MS detection processes like GC–MS and HPLC–MS do. Demonstration by applying to the analysis of the two main components of a pain relief pills proved that the technique opens up new possibilities of combining TLC with other techniques like MS, etc.

J. Planar Chromatogr. 4, 330-332 (1991). HPTLC separation of chlordiazepoxide, demoxepam, and ACB (2-amino-5-chlorobenzophenone) on silica (after cleaning by successive development with ethyl acetate aqueous NH3 - methanol 1:9. ‚Related‘ cpds were separated with ethyl acetate in a saturated chamber, chlordiazepoxide with aqueous ammonia - acetonitrile 1:999 in an unsaturated chamber. Quantification by densitometry (absorbance at 254 nm).

Chinese J. Inform. Trad. Chinese Med. 20 (5), 67-69 (2013). Yinao Huoxue Keli granule is a TCM compound for the treatment of hemiplegia, numbness of limbs, deviation of mouth and tongue. For quality control, HPTLC on silica gel (1) for Salvia miltiorrhiza Bunge with chloroform – acetone – formic acid 8:1:1, detection by spraying with 3 % ferric chloride in 2 N hydrochloric acid – water 1:100 and heating at 105 °C until the spots were visible, identification by fingerprint comparison with the standard protocatechuic aldehyde and the standard ingredient drug; (2) for Panax quinquefolius L., ginsenoside Re, Rb1 and pseudoginsenoside F11 with the lower phase of chloroform – ethyl acetate – methanol – water 15:40:22:10 placed at 5-10 °C for 12 h, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 °C until the spots were visible.