Jap. J. Toxicol. Environ. Health 40, 101-110 (1994). TLC of 46 common pesticides in serum and gastric lavage solutions on silica with 4 developing systems and 3 detection methods. Detection of 24 pesticides at < 500 ng by viewing under UV radiation, of 12 ones by spraying with Dragendorff's reagent. Study of the recoveries by using spiked serum samples.

60th Indian Pharmaceutical Congress PA-87, (2008). HPTLC of carvedilol on silica gel with toluene - chloroform - methanol - acetic acid 20:20:10:1. Densitometric evaluation at 240 nm. The method was linear in the range of 50-1000 ng/spot. The method could effectively separate the drug from its degradation products (acid, base, oxidaline, photodegradation). The kinetic studies confirmed that the drug is more degraded in alkaline medium than in acidic medium.

Biomed. Chromatogr. 10, 225-227 (1996). TLC on silica with chloroform - acetone - ethyl acetate - methanol 136:64:4:1. Detection by spraying with ethylenediamine - methanol - potassium ferricyanide (1.5%) 1:3:1, incubating for 5 min at 60°C and in the dark at room temperature for 15 min. Quantification by fluoro densitometry at 415/>485 nm.

J. Planar Chromatogr. 22, 83-88 (2009). TLC of isoniazid, pyrazinamide, ethambutol, and aminosalicylic acid on RP-18 in a horizontal chamber at 20 °C with acetonitrile - water 3:7. The mobile phase was modified by adding copper(II) chloride to the mixture at a constant concentration of 0.05 M. Detection under UV light at 254 nm. Quantitative determination by absorbance measurement in the range 200 - 700 nm with a TLC scanner equipped with a diode-array detector.

J. Chromatogr. B 700, 283-285 (1997). TLC on RP-18 silica gel with methanol - water 4:1. Quantitation by fluorodensitometry at 313/>490 nm. Validation of the procedure by standard spiking. Comparison with HPLC.

J. Planar Chromatogr. 22, 175-181 (2009). TLC of 14 tetraoxanes on silica gel with ethyl acetate - toluene and ethyl acetate - petroleum ether, on cyano phase with methanol - water and acetone - water, and on RP-18 with water - organic modifier (methanol, acetone, or dioxane) in various combinations, with chamber saturation for 15 min at ambient temperature (22 +/- 2 °C). Detection by spraying with 50 % sulfuric acid, followed by heating until spots became visible.

J. Liq. Chrom. & Rel. Technol. 19, 687-698 (1996). TLC of 3-indoleacetic acid, 5-hydroxytryptophan, serotonin-creatinine sulfate, a-tryptophan on silica gel, cellulose and RP-18; TLC of indolic compounds on cellulose with chloroform - methanol - ammonia 12:7:1, light protected. Quantitation by densitometry at 280 nm (excitation) and 347 nm (emission). Determination of the compounds over the range 10-100 ng, with relative standard deviations between 1.70-6.52 % and detection limits over the range 16.39-22.50 ng.

Ind. J. Pharma. Sci. 8(4), 198-201(2009). HPTLC of nebivolol hydrochloride and valsartan on silica gel with ethyl acetate - methanol - acetic acid 12:2:1 in a twin trough chamber saturated for 15 min. Quantitative determination by absorbance measurement at 240 nm for valsartan and 280 nm for nebivolol hydrochloride. The method was found to be linear in the range of 600-1400 ng/band for valsartan 1200-2800 ng/band for nebivolol. The sample were subjected to different stress conditions (acid, alkali, oxidation, photolysis, thermal) and all degradation products were well separated from the main compounds.