J. Liquid Chromatogr. 18, 739-753 (1995). TLC of the title compounds on RP-18 silica with methanol - water 45:55. Quantification of metribuzin by densitometry at 290 nm. Detection limit 30 ng. Recoveries of metribuzin from soil fortified at 2 mg/kg, 73-86%, those from water at 10 and 100 µg/L, 89-92%.

J. Planar Chromatogr. 14, 422-425 (2001). HPTLC of bensulfuron-methyl and irradiation products on silica gel with dichloromethane - acetone - methanol - 9 M NH3 45:15:10:1, in the dark, in a vapor-equilibrated, paper-lined TLC chamber. Quantification by fluorescence densitometry at 240 nm. Accuracy and precision were determined. A simple quantitative method.

J. Sep. Sci. 30, 964-970 (2007). Multidimensional planar chromatography of a mixture of five groups of pesticides: (1) diuron, isoproturon, and lenacil; (2) monolinuron, propoksur, carbaryl, and simazine; (3) alachlor and dinoseb; (4) trifluralin, tetradifon, p,p´-DDT, and 4,4´-dibromobenzophenone; (5) hexachlorobenzene. The silica gel plate was developed in the first dimension with ethyl acetate – n-heptane 1:3, and then turned by 90°. Portions of the stationary phase were sequentially removed to ensure that the mobile phase of the following developments reaches only the target spots: (2) chloroform – n-heptane 19:1 (4) acetone – n-heptane 1:59, (3) toluene, and (1) ethyl acetate – dichloromethane 1:9. The plate was dried between 5 and 15 min before each development. Detection under UV light at 254nm.

5. Mittlg. Adsorptionsparameter potentieller Antimycotica des Pyrimidin-Typs und ihre Korrelation zur biologischen Wirkung. Parameters of adsorption chromatography, Part.5.: Adsorption parameters of potencial antimycotics of the pyrimidine type and their correlation with biological activity. Pharmazie 42, 513-516 (1987). TLC of 19 fungicide pyrimidine derivatives on aluminium oxide (without binder) with 48 solvent systems (benzene - methanol, benzene - ethanol and chloroform - ethanol). Detection with 0.1% KMnO4 solution acidified 10% sulfuric acid (9:1).

J. Planar Chromatogr. 11, 450-456 (1998). Use of RP-TLC for the evaluation of the hydrophobicity and antimycotic activity of dihydroxythiobenzanilides, newly synthesized bioactive compounds with fungicidal properties. The retention behavior of the compounds has been examined with water-acetone or water-methanol. TLC of 19 dihydroxythiobenzanilides on RP-18 with different water-organic modifier systems as mobile phases. Detection by densitometry at 325 nm.

J. Planar Chromatogr. 25, 48-53 (2012). HPTLC of alpha-cypermethrin in soil on silica gel with hexane - toluene 1:1. Quantitative determination by absorbance measurement at 220 nm. The hRf values for alpha-cypermethrin was 38. Linearity was in the range of 12.5-1000 ng/zone. Limits of detection and quantification were 2 and 6 ng/spot, respectively. Precision was found in the range 1.7-6.3 % (n=6). Recovery was between 90.8 and 91.2 %.

J. Chromatogr., 396, 441-443 (1987). TLC on silica with n-hexane - acetone 4:1. Detection by spraying with 2% sodium hydroxide solution followed by 5% aqueous nickel chloride solution - 30% NH3 1:1. Discussion of the mechanism of the color reaction. Greyish black spots were observed immediately, and stable for more than 24 h.

Analyst 117, 75-76 (1992). Description of a spray reagent for the detection of pyrethroid insecticides containing a nitrile group by TLC. The chromogenic reagent contains 10% sodium hydroxide solution, 5% copper(II)acetate solution, and 1% phosphomolybdic acid solution followed by 0.1% o-tolidine in acetic acid. Detection limit about 1 µg.