J. Planar Chromatogr. 5, 465-467 (1992). TLC of 8 azaarenes on cellulose with DMF - water mixtures 65:35, 50:50, 35:65, 20:80, 10:90. After drying visualization under UV 254 nm and exposure to trifluoroacetic acid vapor followed by visualization under UV.

Quantitative HPTLC in toxicology. GIT Fachz. Lab. 37, 18-22 (1993). The presently observed renaissance of TLC is closely connected with the development of modern TLC-scanning equipment. - Description of applications under quantitative aspects, e.g. determination of opiates (esp. 6-monoacetylmorphin as heroin marker), 1,4-benzodiazepines via aminobenzophenones, phenothiazines, doping agents, barbiturate derivatives and pesticides. Detection limit of morphine/6-monoacetylmorphine after prechromatographic derivatization with dansylchloride 200 - 400 pg/chromatogram zone.

Anal. Chem. 67, 273R-294R (1995). A review with 843 references on forensic science covering drug and poisons, trace evidence and forensic biochemistry, including TLC applications in the area.

J. Planar Chromatogr. 9, 280-281 (1996). HPTLC of heroin, opium, mandrax tabl., diazepam, oxazepam, nitrazepam, phenobarbitone, and caffeine on silica with chloroform - ethanol 9:1. Detection after drying for 5 min at 100°C by spraying with a 1:1 mixture of 1% aqueous solutions of cupric chloride and potassium ferricyanide resulting in a dark brown spot for heroin. The reagent does not give positive reaction to the usually occurring adulterants as barbiturates, benzodiazepines, methaqualone, and caffeine, etc. Sensitivity: about 1 mg of heroin/spot.

J. Liq. Chrom. & Rel. Technol. 27, 2421-2439 (2004). TLC of e. g. delta8-tetrahydrocannabinol, cannabigerol, cannabigerolic acid, cannabidiolic acid, and (-)-delta9-(trans)-tetrahydrocannabinolic acid on RP18 with methanol - 5 % acetic acid 19:1. Detection under UV light at 254 nm and by spraying with modified anisaldehyde - sulfuric acid spray reagent. For selective detection of cannabinoids, the plate was sprayed with 0.5 % fast blue B salt in water, followed by 0.1 M NaOH.

J. Planar Chromatogr. 20, 217-219 (2007). TLC of dichlorvos and diptrex on silica gel with hexane - acetone 4:1. Detection by spraying with a reagent prepared from strong alkali, for example 10 % sodium hydroxide, and 0.5% aqueous sodium sulfide solution. The sensitivity is approx. 20 µg for both dichlorvos and diptrex.

J. Planar Chromatogr. 22, 29-33 (2009). HPTLC of theophylline (extracted at pH 8.5 with chloroform - isopropanol 4:1 from post-mortem blood after acid hydrolysis) on silica gel in a twin trough chamber with chloroform - methanol 9:1. Quantitative determination by absorbance measurement at 277 nm. Polynomial regression in the range of 0.5-20 µg/mL. The limit of detection was 0.5 µg/mL (S/N = 3). Intra-day and inter-day repeatability was between 0.5-0.8 % and 0.5-1.3 %, respectively, for three different concentrations in the range of 0.5-10 µg/mL. Recovery was 89.1-93.4 % at a concentration of 10 µg/mL and pH 8.3-8.6. An average analytical recovery of 89.9 % was achieved at pH 8.5 with a relative standard deviation of 2.2 %. Theophylline was stable in methanolic solution and during chromatography.

J. Liq. Chromatogr. Relat. Technol. 33, 922-935 (2010). TLC and HPTLC of 22 different pyridinium aldoximes on silica gel with water - acetonitrile - acetic acid 8:1:1, water - acetone - acetic acid 8:1:1, and acetone - 50 mM aqueous sodium acetate 1:4 using unsaturated and saturated vapor phase as well as OPLC. Detection under UV 254 nm.