J. Planar Chromatogr. 7, 394-398 (1994). Presentation of a method for the computer-assisted selection of the mobile phase for the HPTLC separation of a synthetic intermediate of unknown composition which is based on recognition of the order of the spots by comparison both of spot areas and of data from the UV absorbance spectra of the spots, followed by use of the MOS°O (Monofactor Optimization system for HPTLC) method. Excellent agreement was obtained between predicted data and experimental results.

J. Chinese Pharm. Univ. (Zhongguo Yaoke Daxue Xuebao) 27, 159-162 (1996). Presentation of a new method based on a silica plate coupling electrophoresis and chromatography in one step development to give a bidimensional chromato-electrophoresis map. Description of the device in which a parallel electric field can be put upon the plate in vertical direction. Investigation of the relationship between horizontal migration and electric field strength.

J. Planar Chromatogr. 14, 203-207 (2001). Description of a new sandwich chamber in which the mobile phase can be applied to any part of the plate. Because the starting position of the development can be anywhere this mode was called 'half-way development'. The results obtained with mixtures of dyes are satisfactory.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 123-128 (2003). TLC by Pressurized Planar Electrochromato-graphy (PPEC) of 4-cholesten-3-one, 17a-acetoxyprogesterone, 2'acetonaphthone, benzanilide, and o-nitroaniline on RP-18 with 55% aqueous acetonitrile containing 50 mM acetate buffer at a nominal pH of 4.5. The applied potential was 6 kV, and the pressure was elevated. Details are omitted based on the current patent application and intellectual property considerations. Improved new technique.

J. Chromatogr. A 1084 (1-2), 13-17 (2005). A variant of electroosmotic thin-layer chromatography is suggested with the use of low volatility compounds as mobile phases aimed at drastically decreasing the evaporation of the mobile phase and improving the reproducibility of the method. The linear movement velocity of zones of separated compounds is experimentally shown to increase 2- to 12-fold in electroosmotic chromatography (compared to similar values in traditional TLC). The separation efficiency is also considerably increased.

CBS 99, 9-11 (2007). HPTLC of petrochemical samples on silica gel pre- or post-chromatographically impregnated by dipping in methanolic berberine (60 mg/L) or coralyne (6 or 12 mg/L) solutions. Development in horizontal developing chamber with dichloromethane (saturated hydrocarbons), n-hexane (heavy gas oil), or petroleum ether - diethyl ether - acetic acid 80:20:1 (cholesterol). Quantitative determination by fluorescence measurement of berberine at 365/>450 nm and coralyne at 410/>450 nm. Linearity for alkenes was between 50 and 1500 ng and for naphtenes between 600 and 2400 ng.

J. Liq. Chromatogr. Relat. Technol. 40, 287-291 (2017). HPTLC of hypericin on silica gel with ethyl acetate – water – formic acid – t-butyl methyl ether – cyclohexane 90:7:7:40:15. Chemiluminescence was used for detection by dipping into bis(2,4,6-trichlorophenyl)oxalate (TCPO) reagent for 1 s, prepared by dissolving 250 mg TCPO in 36 mL of n-butyl acetate, plus added 0.4 mL of 35 % hydrogen peroxide vigorously shaken for 20 min. A sensitive CCD camera was used to measure the chemiluminescence. The hRF value for hypercin was 27. LOD and LOQ were 440 and 690 pg/zone, respectively.

J. Chromatogr. 351, 522-524 (1986). Study of dehydrogenation reaction of terpenoids on silica with l,4-naphthoquinone-K-tert-butoxide at 120 °C for 24 h. Development with benzene - ethyl acetate 10:1 and 4:1. Detection by spraying with sulfuric acid - methanol and heating at 110 °C. Qualitative identification, reaction on TLC plate, pre chromatographic in-situ derivatization.