Chinese J. Chromatogr. (Sepu) 13, 295-296 (1995). TLC of capsanthin on silica with petrol ether - benzene 3:1 and hexane - benzene - ethyl acetate - ethanol 20:2:5:2. Quantification by densitometry at 470 nm.

J. Liq. Chrom. & Rel. Technol. 24, 1435-1445 (2001). TLC of chestnut pigments extracted from sawdust on silica gel and impregnated silica gel layers (prepared by overnight predevelopment in n-hexane - paraffin oil 19:1) with aqueous solutions of 2-propanol, tetrahydrofuran, and dioxane; multistep gradient elution for adequate TLC separations. Evaluation by densitometry at 340 nm. Identification by in-situ FTIR spectra.

Application of methylation with diazomethane for the detection of lac color. J.A.O.A.C. 72, 48-51 (1989). TLC of reaction products of natural red colors methylated with ethereal diazomethane on silica with chloroform - methanol - water 90:10:1 resp. on cellulose with methanol - ethanol - 10% acetic acid 6:1:3.

J. Planar Chromatogr. 11, 244-246 (1998). Separation of a mixture of dyes by planar chromatography using electroosmotic flow. Separation is faster and peak shape is better than that obtained by conventional planar chromatography. When using a potential of 3.0 kV a mobile phase flow of 2 cm/min was observed during the early part of the development, but this diminishes as the separation proceeds. TLC of a dye mixture on RP-18 with water - ethanol 1:4 containing 1 mM TAPS buffer as mobile phase.

J. Planar Chromatogr. 21, 243-248 (2008) TLC plates were placed perpendicular or parallel to 2.45 +/- 0.5 GHz electromagnetic waves (microwaves) to improve chromatographic resolution. Perpendicular arrangements led to the greatest improvement. Compared with separation under normal conditions in microwave assisted TLC the migration distance of target compounds was increased, the migration distance of the mobile phase was decreased and the spot size was reduced. TLC of a lipophilic test dye mixture (indophenol blue, Sudan red G, 4-dimethylaminoazobenzene), a hydrophilic test mixture (brilliant black BN, amaranth S 75, fast yellow, chryosine) and a pesticide mixture (cymoxanil, kelthane, triadimefon, and trifluralin) on silica gel and cellulose with toluene, n-propanol - water in different ratios, and n-hexane - acetone 2:1. Detection of pesticides under UV light at 254 nm.

J. Sep. Sci. 38, 2737-2745 (2015). Novel hydrophobic-hydrophilic monolithic dual-phase plates prepared using a two-step polymerization method using 200 μm poly(glycidyl methacrylate-coethylene dimethacrylate) layers attached to microscope glass plates and UV-initiated polymerization method within a glass mold. The plates were used for TLC separation of the dyes malachite green, methyl red, p-amino-azo-benzene and rhodamine with ethyl acetate - ethanol - water 5:4:9 in the first and second dimension. Detection by surface enhanced Raman spectroscopy.

Marine Drugs 15 (2), 30 (2017). The degradation of the synthetic xylidine orange dye (sodium 1-(dimethylphenylazo)-2-naphthol-6-sulfonate) into colorless and less toxic derivatives was performed by Lysinibacillus sphaericus D3 (immobilized on alginate gel) and monitored by TLC on silica gel with methanol – chloroform 1:19. Detection of fluorescent zones under UV 366 nm.

8. J. Planar Chromatogr. 1, 65-68 (1988). TLC on silica with isoamyl alcohol - acetone - water - NH3 15:15:5:1 in triple development. Quantification by fluorodensitometry at 366/>400 nm.