J. Planar Chromatogr. 27, 192-198 (2014). HPTLC of losartan (1), irbesartan (2), valsartan (3), and_x000D_ olmesartan (4) in plasma and dosage form on silica gel with chloroform - glacial acetic acid 3:1. Quantitative determination by absorbance measurement at 255 nm. The hRF values for (1) to (4) were 36, 45, 78 and 23, respectively. Linearity was in the range of 90-750 ng/zone for compounds (1) to (4). The intermediate/interday/intra-day precisions were below 3 % (n=6). The LOD and LOQ were 30 and 91 ng/zone for (1), 18 and 56 ng/zone for (2), 15 and 45 ng/zone for (3) and 30 and 92 ng/zone for (4), respectively. Recovery was between 96.4 and 99.5 % for (1) to (4).

J. of Xinjiang Trad. Chinese Med. 31 (4), 77-79 (2013). Conger Pian tablet is a herbal TCM for treating sensorineural hearing loss. For quality control, TLC on silica gel 1) for Ligusticum chuanxiong and the standard ferulic acid, with n-hexane – ethyl acetate 9:1, detection under UV 366 nm; 2) for Cornus officinalis Sieb. et Zucc. and the standard ursolic acid, with cyclohexane – chloroform - ethyl acetate 20:5:8, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 ˚C until the zones are visible in daylight. Quantification of icariin by HPLC.

J. Liq. Chromatogr. Relat. Technol. 37, 1568-1582 (2014). HPTLC of artesunate (1) and amodiaquine (2) on silica gel with acetonitrile – water – ammonia 40:7:2. Quantitative determination by absorbance measurement at 366 nm. The hRf values for (1) and (2) were 44 and 50, respectively. Linearity was in the range of 100-600 ng/zone for (1) and 50-300 ng/zone for (2). The intermediate/interday/intra-day precisions were below 2 % (n=9). The LOD and LOQ were 25 and 60 ng/zone for (1) and 12 and 30 ng/zone for (2), respectively. Recovery was 98.1-99.9 % for (1) and 99.3-100.9 % for (2).

Chinese J. of Inform. on TCM 20 (1), 67-69 (2013). Zhige Jiejiu Keli granule is a herbal TCM for the prevention and treatment of alcoholism. For quality control, TLC on silica gel 1) for Lobed Kudzuvine root and Pueraria lobata, with the upper phase of toluene – ethyl acetate – formic acid 5:3:1, detection under UV 366 nm; 2) for Hovenia acerba Lindl., with the upper phase of n-hexane – ethyl acetate – ethanol – ammonia 14:8:2:1, detection under UV 366 nm. Quantification of chlorogenic acid by HPLC.

J. Planar Chromatogr. 27, 409-415 (2014). TLC of propanolol enantiomers on silica gel impregnated with 15 nm gold nanoparticles (AuNPs) and 10.0 mM L-cysteine (L-cys) pH = 8.1, as first and second layer, respectively and developed with 10.0 mM copper(II) acetate, in 70% ethanol – water adjusted at pH 6.3.

J. Ethnopharmacol. 160, 140-148 (2015). HPTLC of hesperidin in the roots of Jasminum sambac on silica gel with ethylacetate - methanol - water - acetic acid 25:2:2:1. Quantitative determination by absorbance measurement at 254 nm. The hRF of hesperidin was 28.

J. Planar Chromatogr. 27, 477-479 (2014). HPTLC of N,N-dimethyltryptamine in seized street samples on silica gel with methanol – ammonia 200:3. Quantitative determination by absorbance measurement at 220 nm. The hRF value of N,N-dimethyltryptamine was 50. Linearity was in the range of 11.5-34.2 μg/zone. The intermediate precisios were below 5 % (n=3). The LOD and LOQ were 3.3 and 9.9 μg/zone, respectively. Mean recovery was 117.9 %.

J. Planar Chromatogr. 27, 377-384 (2014). HPTLC of metformin in urine on silica gel with chloroform – methanol – ammonia 27 % 25:25:1. Quantitative determination by absorbance measurement at 237 nm. The hRF value of metformin was 25. Linearity was between 200 and 2000 ng/zone. The intermediate inter-day and intra-day precisions were below 9 % (n=5). The LOD and LOQ were 40 and 120 ng/zone, respectively. Recoveries were in the range of 92-94 %.