J. Liq. Chromatogr. Relat. Technol. 40, 50-57 (2017). HPTLC of six nucleobases, guanosine (1), guanine (2), cytosine (3), adenine (4), uracil (5), and thymine (6) in sea buckthorn leaves on silica gel with dichloromethane – methanol – formic acid 160:45:16. Detection at UV 254 nm. The hRF values for (1-6) were 17, 23, 32, 38, 64 and 73, respectively. The bands were eluted using a TLC–MS interface and subjected to electrospray ionization-mass spectrometry (ESI-MS)._x000D_

J. Chromatogr. A 1530, 185-191 (2017). Development of a new spray-on method for applying yeast cells to HPTLC plates, leading to a much higher sensitivity of the planar yeast estrogen screen (p-YES), which can serve as a highly valuable and sensitive screening tool for the detection of estrogenic compounds in various sample matrices such as water and wastewater, personal care products and foodstuff. HPTLC of sample constituents and direct detection of estrogenic compounds by spraying with yeast cells. This resulted in much sharper signals compared to those in previous publications. Satisfying results were achieved using cultures with cell densities of 1000 FAU with reduced signal broadening, thus lower LOQ for estrogenic compounds, e.g. estrone 2 pg/zone, 17β-estradiol 0.5 pg/zone, 17α-ethinylestradiol 0.5 pg/zone and estriol 20 pg/zone. Demonstration of the possibility of the method to characterize profiles of estrogenic activity of wastewater samples with high quality and reproducibility by using native samples from wastewater or even surface water directly applied on HPTLC plates without the need for prior sample treatment.

Anal. Chem. 56, 1277-1281 (1984). TLC for chemical class fractionation on silica with 1) pentane for nonpolar compounds and 2) ether - pentane 1:5 for the polar. Detection by spraying with 0.2 % 2,7-dichloro-fluorescein solution and irradiation with UV light. Compound identification by GC/MS and IR.

Anal. Chem. 59, 525-527 (1987). HPTLC separation of nucleic purine derivatives (guanine, adenine, purine, 1-methylguanine, 3-methylguanine, 7-methylguanine, 9-methylguanine, 1-methyladenine, 1-methylhypoxanthine) on silica with chloroform - methanol - NH3 60:20:1. After drying plates are sprayed with colloidal silver solution and analyzed for SERS spectra. Quantity required from 10 to 60 ng / spot.

Chinese J. Med. Ind. 18, 266-267 (1987) (Yiyao Gongye). TLC of nifedipine and its analogs, nitrendipine and nimodipine on silica with hexane - chloroform - ethyl acetate 2:3:1 or hexane - acetone 1:1. Identification by Rf comparison and UV spectroscopy.

Immunochemical detection of C-series polysialogangliosides in adult bovine brains. J. Chromatogr. 445, 377-384 (1988). TLC on silica with chloroform - methanol - 15 mM magnesium chloride 5:4:1 and chloroform - methanol - 2.5 mM NH3 5:4:1. Detection by spraying with resorcinol - hydrochloric acid reagent. Also Q-sepharose CC and enzyme immunostaining on TLC plate.

serrata, B. carteii, and B. papyrifera. J. Chromatogr. 27, 127-133 (1989). TLC on silica with dichloromethane - acetone 98:2. Detection by spraying with 1M antimony pentachloride in chloroform, heating at 120°C; day light or UV 365 nm. Also GC and GC/MS.

J. Planar Chromatogr. 2, 194-197 (1989). Discussion of a new method for preparing surface-enhanced Raman spectroscopy using silver colloidal spheres deposited on HPTLC plates. The sensitivity permits the aquisitation of Raman spectra from HPTLC spots down to 1 µm in size. It is possible to identify organic substances in the pico- and femtogram region of mass.