J. Chromatogr. 519, 268-270 (1990). TLC on silica with hexane - acetone 4:1. Detection by spraying with 5% sodium hydroxide followed by 5% cobalt acetate, and then with 1% o-tolidine in acetic acid. Detection limit 10 µg (!).

Chinese J. Chem. Anal. (Lihua Jianyan, Huaxue Fence) 26, 371, 372 (1990). TLC of 4-hydroxy-3-(1-tetrahydronaphthalenyl)-coumarin (a raticide) on silica with chloroform - methanol 99:1.

Don. Herba Hungarica 29, 63-68 (1990). TLC of catharanthine, vindoline, leurosine and vinblastine on silica with ethyl acetate – ethanol – benzene – NH3 100:5:5:3.

J. Agric. Food. Chem. 42, 963-967 (1994). TLC of phenolic fractions on microcrystalline cellulose with 1-butanol - acetic acid - water 4:1:5, 6% acetic acid, acetic acid - hydrochloric acid - water 30:3:10; after drying observation under log-wave UV, then sprayed with vanillin reagent to detect flavan-3-ols or with a mixture of equal volumes of 2 % K3[Fe(CN)6] + 2% FeCl3 to detect phenolics. Radiolabeled compounds were detected by autoradiography.

Biochemical Systematics and Ecology 23, 201-207 (1995). TLC of lipids on silica with hexane - ether - acetic acid 90:10:1. Visualization by spraying with 2,7-dichlorofluorescein solution in ethanol and under UV 360 nm. Purification of the sterol fraction by preparative TLC on AgNO3 - silica 2:8. GC analysis.

J. Planar Chromatogr. 9, 48-51 (1996). TLC of 7,7'-biphysicon, physicon, chrysophanol on silica with chloroform - ethyl acetate - formic acid 89:10:1. After cutting the plate into two pieces 7.0 cm from the bottom edge, the upper portion was developed with the same solvent for 1.0 cm, and after drying with hexane - ethyl acetate - formic acid - water 178:20:2:7. Quantification by densitometry at 430 nm and a reference wavelength of 540 nm. Detection limit in the lower nanogram range (5 - 10 ng).

CBS 83, 6-7 (1999). HPTLC-AMD of PAHs in liver and lung of animals exposed to contaminated soil on RP-18 with a 14-step gradient from acetonitrile to methanol - water 9:1. Quantification by fluorescence measurement at 313/>400 nm and 254/>400 nm, respectively. Strict linearity (r2 > 0.99 on 5 measuring points) was proven. Coefficient of variation was found to be < 5 %, and recoveries between 55 and 70 % were given. Limits of detection was determined to be 0.2 to 2 ng/g sample.

J. Planar Chromatogr. 18, 349-357 (2005). HPTLC of pesticides (prochloraz, chloroxuron, chlorotoluron, metoxuron, chlorbromuron, cyanazine, flamprop-M-isopropyl, prometryn, permethrin, bitertanol, hexazinone, chlorsulfuron, methabenzthiazuron, phenmedipham, metiocarb, dichlofluanid, propachlor, procymidone, terbuthylazine, propyzamide, tri-allate, bifenthrin) on silica gel, RP-18 W, RP-18, and cyano phases in a horizontal chamber. In adsorbent-gradient TLC silica gel plates were used in the first direction with tetrahydrofuran - n-heptane 1:4. After drying, the plates were cut in narrow strips and connected with RP-18 W or cyano plates, the pesticides were transferred to the before mentioned plates with methanol and developed in the second dimension with water - methanol or water - dioxane. Detection under UV light at 254 or 366 nm. Quantitative determination by densitometry at 254 nm.