I. FID performances and response of pure compounds related to fossil fuel products. J. Chromatogr. Sci. 36, 419-486 (1998). Test of the performances on a modern TLC-FID system on polycyclic aromatic compound standards and related compounds. Evaluation of performances of the FID configuration. Investigation of TLC-FID response factors for compounds of several homologous series. Discussion of the criteria for the accurate application of TLC-FID to fossil fuel samples.

Chinese J. Biochem. & Biophys. (Shengwu Huaxue Yu Shengwu Wuli Xiebao) 33 (3), 262-268 (2001). TLC of high density lipoprotein and oxidized high density lipoprotein on silica gel with chloroform - NH3 - methanol - water 180:11:108:11. Detection by exposure to iodine vapor. Also SDS-PAGE on 10% polyamide at 15 V/cm for 5 hours. Investigation of the properties of oxidatively modified high density lipoprotein, the effects of hypochlorite and Cu2+ on HDL in vitro.

J. Chinese Trad. Patent Med. (Zhongchengyao) 26 (1), 26-29 (2004). TLC on silica gel with 1) ethyl acetate - methanol - conc. ammonia 17:2:1, 2) cyclohexane - ethyl acetate - formic acid 30:15:1, or 50:10:1. Detection 1) by spraying with 5 % potassium iodobismuthate solution, 2) by spraying with 5 % vanillin in H2SO4 solution and heating at 105 ºC, 3) under UV 254 nm. Identification by fingerprint techniques. Quantitative determination of puerarin by HPLC.

CBS 101, 9-11 (2008). Identification of an unknown impurity detected during an in-process control by HPTLC coupled to ESI-MS using the ChromeXtractor interface. HPTLC of two impurities (an aldehyde derivative and a chlorinated ketone derivative) on silica gel with n-butanol - water - acetic acid 3:1:1 in a twin-trough chamber. Detection by spraying with sulfuric acid reagent (10 % in methanol) followed by heating at 120 °C for 15 min.

Anal. Chem. 81, 3858-3866 (2009). HPTLC of microcystin LR and nodularin on silica gel with 1-propanol - ethyl acetate - water 3:5:2 with 5 % acetic acid. Detection and quantification by UV spectroscopy at 232 nm and direct identification of separated analytes on the HPTLC plate by IR-MALDI-o-TOF MS. The detection limit was 3-5 ng/zone. For detection of peptides, plates were cut and sprayed with a solution of p-anisaldehyde, followed by heating at 105 °C until purple-blue peptide spots appeared.

J. Chromatogr. A 1217 (43), 6600-6609 (2010). A review on hyphenations of planar chromatography and its most important subcategory HPTLC. Examples from the field of natural product search, food, and lipid analysis point out the hyphenation with effect-directed analysis and mass spectrometry and illustrate the efficiency gain. Depending on the task at hand, hyphenations can readily be selected, for example with MS, bioassays etc. as required to reach the relevant information about the sample. At the same time, information is obtained for many samples in parallel. The flexibility and the unrivalled features through the planar format valuably assist separation scientists.

J. Planar Chromatogr. 26, 402-408 (2013). HPTLC of 17alpha-ethinylestradiol (1) and 17beta-estradiol (2) and estrone (3) on silica gel with chloroform - acetone - petroleum 11:4:5. The method was combined with the Yeast Estrogen Screen for the detection of estrogenic activity in aqueous samples. Quantitative determination by absorbance measurement at 366 nm. The hRf values of compounds (1) to (3) were 60, 50 and 67, respectively. LOD for (2) was 5 pg/zone.

Rapid Commun. Mass Spectrom. 30, 321-332 (2016). The paper describes different technical and methodic improvements for interface configuration, source caps and transfer tube to enhance sensitivity and reliability in Direct Analysis in Real Time mass spectrometry (DART-MS) surface scanning. By doing so, the detectability of HPTLC-scanning DART-MS was increased by a factor of 34, which is crucial for analysis in the low-nanogram range on the plate and the hyphenation of HPTLC with DART-MS, but also for surface scanning in general. The modified device was shown to work highly quantitative.