Kautschuk + Gummi - Kunstoffe 41 (9) 875-881 (1988). TLC of antioxidants IPPD (N-isopropyl-N'-phenyl-p-phenylene-diamine), 6PPD (N-1,3-dimethyl-butyl-N'-phenyl-diamine), N,N'-diaryl-PPD (N,N'-diaryl-p-phenylene-diamine) and TMQ (2,2,3-trimethyl-1,2-dihydroquinoline) on silica with chloroform - hexane - methanol - acetic acid 15:6:1:1. To remove plasticizers the TLC plate is chromatographed twice with petrol ether first. Detection by multi-wavelength scanning of UV absorbance at 240, 280, 320, 360 nm and visually by spraying with 3% ethanolic solution of 2,6-dichloroquinone-4-chlorimide. Additionally identification by recording of UV spectra. A further mobile phase system (toluene - hexane - methanol 29:15:6) is mentioned.

Separation of DNA fragments on composite agarose - linear polymer matrices. J. Chromatogr. A 871, 289-298 (2000). Study of the effect of hydrophilic linear polymer additives on the migration behavior of double stranded DMA molecules, ranging from 200-1000 base pairs in ultra-thin-layer agarose electrophoresis. Among the various polymers investigated, addition of linear polyacrylamide resulted in the best separation performance. The separation mechanism using composite matrices was discussed and the activation energy curves were plotted based on the slopes of the Arrhenius plots of the various composite matrices.

CBS 95, 2-4 (2005). TLC of seven biogenic amines (extracted with trichloroacetic acid from fish, followed by dansylation with dansyl chloride) on silica gel (prewashed with developing solvent) with benzene - chloroform - triethylamine 10:6:7 or 10:6:2 in horizontal developing chamber over 90 mm. Quantitative determination by fluorescence measurement at 365 nm/> 400 nm. Calibration using peak area, LOD 7.5 mg/kg, LOQ 56 mg/kg.

Ind. J. Pharm. Sci. 70(2), 233-236 (2008). HPTLC of duloxetine hydrochloride (in bulk drug and in tablet dosage form) on silica gel with chloroform - methanol 8:1. Quantitative determination by absorbance measurement at 235 nm. The method was linear in the range of 40-200 ng/spot. The method was suitable for routine quality control.

62nd Indian Pharmaceutical Congress Abstract No. F-237 (2010). TLC of tolterodine tartarate on silica gel with acetonitrile – water – formic acid 50:50:3. Quantitative determination by absorbance measurement at 281 nm. The method was found to be linear in the range of 1-30 µg/band.

J. Planar Chromatogr. 29, 59-65 (2016). HPTLC of methadone in syrup on silica gel (1) or RP-18 (2) with methanol – 25 % ammonia 10:1. Detection by spraying with 1 mL of Dragendorff reagent. Quantitative determination using a flatbed scanner with a resolution of 16 bits. The hRF of methadone was 44 on (1) and 23 on (2). Linearity was in the range from 60 to 1260 ng/zone. The LOD and LOQ were 100 and 200 ng/zone, respectively. A total relative uncertainty of 6.5 % was achieved.

Analyst 113, 1605-1606 (1988). TLC of tyramine on silica with 1-butanol - acetic acid - water 15:3:2. Detection by spraying with Pauly’s reagent. Quantification by spectrophotometry at 237 nm after elution with 2M ammonia solution. The method is more reliable than HPLC method.

J. Planar Chromatogr. 5, 239-245 (1992). Study of the HPTLC behavior of closely related diethanolamines on silica developed with 4 binary eluents and evaluation of the effect of solute - solvent association using the thermodynamically formulated Oscik criterion.