Chromatogr. A 1002 (1-2), 213-219 (2003). Three methods of coupling development and elution were studied in this paper. (1) A new mode of solvent supplementation and eluate collection was developed for descending development. By using a new distributor and collector in descending development, components can be separated and eluted continuously. (2) The same effect can be realized with a slope distributor [Su et al., J. Planar Chromatogr. 14 (2001) 203] and a collector by horizontal development. (3) In-situ elution can be used to treat a developed silica plate, which can elute the separated components to the receptor without scraping them off. These three methods can be used individually, and the in-situ elution can be used with other modes of development.

J. Liquid Chrom. 5, 1555-1566 (1982). Two-dimensional TLC on a special plate with two layers (silica and RP-18) of A) morphine with1) methanol - 0.5M NaCl 65:35, 65 °C for 20 minutes, 2) ethyl acetate - methanol - water - 28 % NH3, 170:27:2:1; B) lubricating oil with 1) acetonitrile-water - acetic acid 90:10:1, 2) hexane - chloroform 8:20. Detection of A) with methanolic iodoplatinate reagent and of B) with 5 % phosphomolybdic acid and heating for 5 minutes at 120°C.

J. Chromatogr. 265, 105-110 (1983). Use of various organic modifiers: acetone, dioxane, isopropanol and THF, in thin-layer chromatography on chemically bonded phases. Two classes of compounds have been studied: phthalate esters and isomeric aminophenols. TLC of phthalate esters/isomeric aminophenols on RP-plates with a) acetone - water, b) dioxane-water, c) isopropanol - water, d) THF-water, all with or without 3 % of sodium chloride. Detection by UV 254 nm.

Chromatographia 18, 318-322 (1984). The lipophilicity of aniline and 36 ring-substituted aniline derivatives was determined by reversed-phase thin-layer chromatography using methanol, acetone and acetonitrile as the organic phase. Reversed-phase TLC of aniline derivatives on silica, impregnated with 5 % solution of paraffin in hexane, with methanol, acetone, acetonitrile in varying proportions. Detection by UV.

(Current Thin-Layer Chromatography). LABO June 1997, 56-62 (1997). Short overview of advantages of TLC; i.e. simultaneous determination of more than 70 single substances within 30 min on a single plate; determination of up to 30 single substances per sample using Automated Multiple Development (AMD) techniques; TLC as general method for High Throughput Screening (HTS): more than 1000 samples per day per person; description of plates with spherical particles - available since 1997: developing time shorter by 20%, more compact spots with smaller diameter, therefore lower detection limits, order of elution unchanged.

J. High Resol. Chromatogr. 9, 218-223 (1986). Description of a preparative anticircular chromatography (PACH) apparatus including sampling device; evaluation of sample collection techniques, quantification and evaluation of consistency by UV/VIS scanning after spot-visualization as well as application examples.

Indian J. Pharm Sciences 67 (6), 687-690 (2005). HPTLC of sparfloxacin extracted with dichloromethane from plasma. A standard solution was prepared in methanol - dichloromethane 1:1. HPTLC on silica gel with chloroform - toluene - methanol - diethylamine 44:15:2:1. Quantitative determination by absorbance measurement at 301 nm. The method had a linearity range of 80-200 ng/spot with an average recovery of 89.17 %.

CBS 110, 10-11 (2013). New HPTLC silica gel plates specially suited for coupling with MS and TLC plates for coupling with NMR. These MS-grade HPTLC plates are low in impurities and show less background noise, the layer thickness is 100 µm. HPTLC of human insulin and its secondary components on MS-grade silica gel with 2-butanol - pyridine - ammonia 25 % - water 39:34:10:26, detection under UV 366 nm after treatment with fluorescamine and by elution with the TLC-MS Interface and Q-TOF MS analysis in ESI positive mode, the eluent was acetonitrile - water 19:1. Separation and identification of insulin and desamido insulin was achieved, even though there is only 1 Da mass difference.