J. Planar Chromatogr. 28, 352-353 (2015). HPTLC of imidacloprid on silica gel with dichloromethane – isopropyl alcohol 1:3. Detection by spraying with cobalt thiocyanate reagent (3 g ammonium thiocyanate and 1 g cobalt(II) chloride in 20 mL distilled water). The hRF value for imidacloprid was 82.

J. Chromatogr. 463, 229-233 (1989). TLC of sulfathiazole on silica with isopropanol - NH3 conc. 8:2. Detection by spraying with 1% sodium nitrite in 1M hydrochloric acid and 0.8% aq. ammonium sulfamate and 0.3% N-1-(naphthyl)ethylenediaminedihydrochloride in 1M hydrochloric acid. Quantification by densitometry. Also spectrometry.

J. Agric. Food. Chem. 42, 381-387 (1994). Analytical and preparative TLC of moxidectin and metabolites on silica with dichloromethane - ethyl acetate - formic acid 34:6:8, on RP-18 with acetonitrile - water 18:2; incremental multiple development TLC procedure was used to separate and isolate metabolites on RP-18 silica with acetonitrile - water 9:1 and on silica with ethyl acetate - hexane 5:2. Radioactive zones located by autoradiography.

JAOAC 85, 1420-1424 (2002). HPTLC of cypermethrin[(RS)-b-cyano-3-phenoxybenzyl(1RS,3RS,1RS,3SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate], a-cypermethrin, and l-cyhalothrin on silica gel with hexane - toluene 1:1. Quantitation by densitometry at 220 nm and comparing the integrated peak area with those of reference grade pyrethroid as internal standard. Simple, rapid and reproducible method.

J. of Chromatogr. A 1218 (37), 6540-6547 (2011). New approach and application of highly automated planar chromatographic tools for powerful clean-up, called high-throughput planar solid phase extraction (HTpSPE), which is indispensable for preventing matrix effects in multi-residue analysis of pesticides in food by liquid and gas chromatography coupled to mass spectrometry, employing TLC to completely separate pesticides from matrix compounds and to focus them into a sharp zone, followed by extraction of the target zone by the TLC-MS interface, thus resulting in extracts nearly free of interference and free of matrix effects, as shown for seven chemically representative pesticides in four different matrices (apples, cucumbers, red grapes, tomatoes), and completion of clean-up of one sample in a manner of minutes. Regarding the clean-up step, quantification by LC–MS with mean recovery (against solvent standards) of 90–104% and relative standard deviations of 0.3–4.1% (n = 5) for two spiking levels of 0.1 and 0.5 mg/kg.

(Hungarian). (Measurement of triazine pollution, endangering the rotation of maize and wheat by using analytical and biological methods.) TLC of triazine on silica with toluene - acetone 85:15. Detection with chlorotoluidine. Detection limit 0.05 mg/kg triazine.

General results and isolation of lignin metabolites. J. Agric. Food Chem. 32, 1237-1241 (1984). Separation of pentachlorphenol and metabolites on silica with hexane - ether - formic acid 70:30:4, cyclohexane - acetone 5:2 and chloroform as eluent. Detection and quantification by radioautography.

J.A.O.A.C. 72, 512-514 (1989). TLC separation of synthetic pyrethroids on silica. Detection by spraying the dry plate with NaOH solution (0.5N NaOH in 90% methanol), than with p-nitrobenzaldehyde solution (0.3 g p-nitrobenzaldehyde in 10 mL methyl cellosolve) and finally with o-dinitrobenzene solution (0.25 g in 10 mL methyl cellusolve). Detection limit 0.1 µg.