Chromatographia 28, 148-150 (1989). TLC of chlorophyll a and b on cellulose layers with petrol ether - isopropanol 98:2 in the dark. Quantification by densitometry at 410 nm for chlorophyll a and at 452 nm for b. Detection limit 50 ng. The calibration curves were linear in the range of 50-200 ng (r=0.997 for a and 0.995 for b). TLC provides a rapid and simple method for monitoring vegetation damage.

Bola. J. Agric. Food. Chem. 42, 640-644 (1994). TLC of carotenoids (ß-carotene, lutein, neoxanthin, violaxanthin, ß-cryptoxanthin, zeaxanthin, capsanthin, capsorubin - as esters) on silica with hexane - ethyl acetate - ethanol - acetone 95:3:2:2; co-chromatography; observation under UV 254 and 366 nm.

Biochemical Systematics and Ecology 25, 547-552 (1997). TLC of carotenoids on silica with heptane - acetone 2:1 or acetone - methanol 9:1.

J. Planar Chromatogr. 16, 48-51 (2003). TLC of embelin (2,5-dihydroxy-3-undecyl-1,4-benzoquinone) on silica gel, impregnated with 1% oxalic acid solution, with n-hexane - ethyl acetate 7:3 in a saturated chamber. Detection in visible light as a yellow spot; densitometry at 285 nm. Under these experimental conditions the method was highly sensitive - detection limit 12.5 ng - and recovery was satisfactory - from 89.45% to 92.28%.

J. of Chromatogr. A 1257, 195-203 (2012). Based on the recent description of the fabrication of TLC plates from patterned carbon nanotube (CNT) forests via direct infiltration/coating of the CNTs by low pressure chemical vapor deposition of silicon from SiH4, followed by high temperature oxidation of the CNTs and Si, an improved microfabrication process for the preparation of these TLC plates has been presented. First, deposition of a few nanometers of carbon and/or a thin film of Al2O3 on the CNTs, confirmation of the presence of additional oxygen after carbon deposition by X-ray photoelectron spectroscopy, after priming, coating of the plates by rapid, conformal deposition of an inorganic material that does not require subsequent oxidation, i.e., by a fast pseudo atomic layer deposition (?-ALD) of SiO2 from trimethylaluminum and tris(tert-butoxy)silanol and faithful reproduction of the features in the masks is still observed after oxidation. Fast, highly efficient separations of the fluorescent dyes eosin Y disodium and sulforhodamine B were achieved on amino phase with LiCl - methanol 1:100 over 30 mm migration distance.

J. Planar Chromatogr. 4, 365-369 (1991). TLC and HPTLC separation of 8 thiazin dyes (thionine, azure A, azure B, azure C, methylene blue, new methylene blue, toluidine blue, methylene violet) on silica with 1-butanol - acetic acid - water in different ratios. Optimum solvent for all dyes except methylene violet 1-butanol - formic acid - water 10:1:1. Quantification by densitometry.

J. Liq. Chromatogr. & Rel. Technol. 26, 819-832 (2003). TLC of carotenoid colorings (annatto extract, orange color, gardenia yellow, paprika color, tomato color, marigold color, b-carotene) on RP-18 with acetonitrile - acetone - n-hexane 11:7:2 and acetone - water 9:1 and on silica gel with n-hexane - ether - acetic acid 4:1:1 and benzene - ethyl acetate - methanol 15:4:1. Color standards were i.a. capsanthin, b-carotene, b-cryptoxanthin, bixin, crocetin, lycopene, lutein, crocin, and norbixin.

J. Planar Chromatogr. 25, 509-515 (2012). HPTLC of textile dyes Lanasyn Blue F-L 150 (1), Lanasyn Dark Brown M-GLN (2), Lanasyn Red M-GA (3), Nylosan Dark Brown S-MBL (4), and Nylosan Red N-2RBL (5) on RP-18 with n-butanol - ethyl acetate - 5 % ammonium hydroxide 4:4:1. Quantitative determination by absorbance measurement at 550 nm. Linearity was in the range of 20-60 ng/band. Limits of detection for (1) to (5) were 7, 6, 3, 5 and 1 ng/band, respectively.