J. of Chromatogr. A 1218 (50), 9111-9114 (2011). A short communication on the fractionation, separation and identification of spinochrome pigments from sea urchin (Strongylocentrotus droebachiensis) shells by TLC with off-line HPLC coupled to diode array detection and microTOF-Q mass spectrometry (HPLC–DAD–MS). Two fractions of pigments were obtained and separated by TLC, then eluted with methanol directly into the MS using the TLC-MS Interface. The HPLC-DAD-MS analysis of the fractions indicated the presence of six sea urchin pigments: spinochrome monomers B and D, three spinochrome dimers (anhydroethylidene-6,6'-bis(2,3,7-trihydroxynaphthazarin) and its isomer and ethylidene-6,6'-bis(2,3,7-trihydroxynaphthazarin)), and one pigment that was preliminary identified as a spinochrome dimer with the structural formula C22H16O16.

Acta Alimentaria 16, 339-350 (1987). TLC and HPTLC of carotene, neurosporin, lycopene, polycopene, violaxanthin, pheophytin, neoxanthin, cis-mutatoxanthin, lutein on silica with first hexane - benzene - acetone - acetic acid 80:10:5:5 and second hexane - benzene - acetone 90:8:2.

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.