J. Shanghai Univ. Med. (Shanghai Yike Daxue Xuebao) 25 (2), 121 (1998). TLC on silica gel with dichloromethane - methanol - acetic acid 90:10:3. Detection by exposure to iodine vapor. Identification by standard comparison.

Sz. Nyiredy, A. Kakuk (eds.): Planar Chromatography 2000, Lillafüred, Hungary, 24-26 June 2000, Res. Inst. for Med. Plants, p. 173-181. After prechromatographic derivatization with dansyl chloride OPLC of biogenic amines on HPTLC silica gel with n-hexane - n-butanol - triethylamine 900:100:81 and n-hexane - n-butanol 4:1. Densitometry at 305 nm. The main biogenic amines in red wines were putrescine (41%), agmatine (33%), tyramine (13%) and spermidine (<10%), in white wines were putrescine (37%), tyramine (36%), agmatine (20%) and cadaverine (<10%). OPLC of resveratrol on TLC silica gel with chloroform - methanol 25:2.

J. Planar Chromatogr. 17, 65-71 (2004). TLC of 13 phenols, 15 quinolines, and 9 anilines on silica gel impregnated with zinc nitrate, bromide, chloride, acetate, and sulfate. Binary non-aqueous mixtures of 2-propanol or ethyl acetate with heptane were used. Development after pre-saturation in horizontal DS chambers. Detection under UV light at 254 nm. The impregnation with zinc acetate leads to improvement of spot shape and separation selectivity, especially for quinoline derivatives.

J. Planar Chromatogr. 24, 214-217 (2011). HPTLC of six phenolic compounds (phenol, 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, and pentachlorophenol) in water samples extracted using microliter volumes of 1-undecanolon, on RP-18 with methanol - water 2:1 in a twin-trough chamber. Detection by spraying with a mixture of iron(III) chloride and potassium ferricyanide. Quantitative determination by densitometry in absorbance mode at 254 and 725 nm. The calibration curves were linear in the range of 0.025-4.0 and 0.1-20.0 mg/band. The limits of detection and quantification were between 8-35 and 25-98 ng/band, respectively. The relative standard deviation for repeatability was between 2.6 % and 6.4 %. Recovery (by standard addition) was between 89.2-101.7 %.

Phytochemistry 106, 44-54 (2014). HPTLC of phenylethanoid glycosides acteoside and aucubin in tissue cultures of Plantago lanceolata on silica gel with ethyl acetate - water - acetic acid - formic acid 134:36:15:15. Detection by spraying with 0.5 g vanillin dissolved in methanol - acetic acid - sulphuric acid 17:2:1, followed by heating at 105 ºC for 20 min. Qualitative identification at 520 nm. The hRF values of acteoside and aucubin were 20 and 70, respectively.

Rev. Bras. Farmacogn. 25, 193-198 (2015). HPTLC of mangiferin (1) and scopoletin (2) in Canscora decussata on silica gel with ethyl acetate - acetic acid - formic acid - water 20:1:1:3. Quantitative determination by absorbance measurement at 254 nm. The hRF values for (1) and (2) were 22 and 78, respectively. Linearity was in the range of 100-600 ng/zone for (1) and (2). LOD and LOQ were 46 and 94 ng/zone for (1) and 31 and 78 ng/zone for (2). The intermediate precision was below 0.2 % (n=3). Average recovery was 100 % for both (1) and (2).

Planta Medica 82 (15), 1374-1380 (2016). To monitor the subfractionation with methanol on cyclodextrin of a butanol fraction of a methanolic Soxhlet extract of Tamaris Africana shoots, TLC on silica gel with n-butanol – acetic acid – water 12:3:5 and chloroform – methanol – water 70:30:3. Chromatograms were derivatized with Natural Product/PEG reagent and with cerium sulfate sulfuric acid reagent. From the obtained subfractions, flavonoids (three sulfated) and phenolic compounds (ferulic and veratric acid derivatives) could be further isolated.

J. Chromatogr. A 1526, 151-156 (2017). Development of a rapid and cost-effective method for determining brominated flame retardants (BFR) such as tetrabromobisphenol A/S (TBBPA/S) and their derivatives in soils, including TBBPA, TBBPA bis(allyl ether) (TBBPA-BAE), TBBPA bis(2,3-dibromopropyl ether) (TBBPA-BDBPE), TBBPS bis(allyl ether) (TBBPS-BAE) and TBBPS bis(2,3-dibromopropyl ether) (TBBPS-BDBPE), based on TLC sample pre-treatment coupled with HPLC-DAD at UV 214 nm. The LODs and LOQs were between 0.023-0.087 μg/g dw and 0.076-0.29 μg/g dw, respectively. The recoveries were between 41-108 % and both % RSD of repeatability and intermediate precision were < 11 %. The method showed a good performance for analyzing natural soil samples collected from BFRs industrial park, suggesting its great application potential for monitoring environmental TBBPA/S and their derivatives.