J. Liquid Chrom. 10, 3637-3645 (1987). TLC separation of malathion, phorate, dimethoate and methylazinphas on silica, impregnated with 0.5% p-cresol, with n-hexane - xylene - ethyl acetate - acetone 100:3:10:16. Detection with iodine vapor.

J. AOAC Int. 79, 1009-1011 (1996). TLC of pesticides (bromophos, chlorpyrifos, diazinon, dimethoate, ethion, fenitrothion, fenthion, malathion, parathion-ethyl, parathion-methyl, phorate, pirimiphos-methyl, and quinalphos) on silica in a TLC chamber saturated with petrol ether (60-80 °C) - ether 17:3 with 2,2,4-trimethyl-pentane - acetone - chloroform 12: 5:1. Visualization after drying by spraying with the chromogenic reagent (0.3 g 4-amino-N,N-diethylaniline dihydrochloride in 20 mL ethanol), drying again and subsequently keeping for abt 5 s in a chamber containing bromine vapors. Detection limits between 0.05 and 0.50 µg. New simple and sensitive TLC method.

Chromatogr. 3, 148-201 (1985). (Chinese) (Simultaneous determination of diethyl-4-methyl-1,3- phenylene-dicarbamate and its intermediates by thin-layer chromatography.) TLC of diethyl-4-methyl-1,3-phenylene-dicarbamate, ethyl-2-methyl-5-nitrophenylcarbamate, ethyl-3-nitro-4-methylphenyl-carbamate and 2,4-dinitrotoluene on silica with cyclohexane - ethyl acetate - methanol 14:6:0.5. Quantification by densitometry.

(Propham in the germination inhibitor Tixit - Quantitative determination and validation of the procedure). Dünnschicht-Chromatographie InCom Sonderband 1996, 97-111. HPTLC of propham (phenylcarbamic acid 1-methylethyl ester) on silica with dichloromethane. Detection under UV. Quantification at 228 nm. Detection limit 20 - 30 ng propham; repeatability 2.54% resp 3.23%, reproducibility 6.78% resp 10.20%.

J. Planar Chromatogr. 22, 65-71 (2009). Presentation of two simple and rapid HPTLC methods for early detection of the effects of herbicides using two different groups of plant biomarkers, which were developed as field tests (Herbicide Weed Response test - HWR-Test). Phytochemical changes can be detected before any morphological changes are visible on the plants. These changes are defined as biomarkers and can be detected by HPTLC-screening. After overall identification of the phytochemical biomarker pattern, two different biomarker groups, carbohydrates and amino acids, were detected using modified reagents for color reactions. Evaluation under daylight and videodensitometric analysis of digital images by VideoScan software. The screening method was previously described [H. W. Ravn, M. Hjorth, L. Lauridsen, P. Kudsk, S. K. Mathiassen, L. Mondolot, Bull. Environ. Contam. Toxicol. 75, 236-245 (2005)].

H. TRAITLER, A. STUDER, R.E. KAISER (eds): Instrumental HPTLC, Institute for Chromatography, Bad Dürkheim, FRG (1987), 277-284. TLC of trifluralin and its related compounds on silica with step-by-step chromatography in 5 eluting systems. Identification by densitometric registration, diffuse reflection electronic spectra denstitometry and differential signal resolution densitometry. The solvents used: 1. hexane - dichloroethane 7:3, 2. hexane - diethyl ether 3:1, 3. hexane - toluene 3:1, 4. benzene - acetonitrile - formic acid 130:40:1.5, 5. carbon tetrachloride - acetonitrile - formic acid 50:20:1.

J. Planar Chromatogr. 3, 251-255 (1990). New layer for problematic separation: TLC of 10 organic acid herbicides on silica - calcium sulfate layers 1:4 with different solvent systems. Identification by spraying with alkaline ethanolic solution of bromophenol blue.

J. Planar Chromatogr. 12, 145-149 (1999). TLC of 24 new chlorotriazines on silica gel with 14 different solvents. Visualization under UV 254 nm. Quantitation by densitometry. The proposed procedure can be used not only for monitoring the synthesis and to check the purity of the products but also for the determination of their stability and environmental behavior.