Anal. Biochem.128, 41-46 1983). TLC of N-acetyl-glucosamine, di-N-acetyl-chitobiose and tri-N-acetyl-chitotriose on a) silica with chloroform - methanol - water 10:8:2, b) on octadecylsilane bonded silica with acetonitrile-water 95:5. Detection with 7-amino-4-methyl coumarin or sulfuric acid and heating.

Anal. Chim. Acta 257, 135-138 (1992). Demonstration of the iodine - azide reaction for the determination of mg amounts of 2-thiohydantoins after their separation by TLC. Discussion of the parameters of the reaction.

CBS 114, 13-15 (2015). To test the new HTpSPE–TOFMS screening, TLC of a pesticide mixture (acetamiprid, azoxystrobin, chlorpyrifos, fenarimol, mepanipyrim, penconazole, pirimicarb) in several plant matrices (cucumber, tomato, grape, apple extracts) on amino layer pre-treated by dipping in 2 % formic acid solution in acetonitrile and drying for 10 min. Development with 10 mL acetonitrile, migration distance 75 mm, drying 5 min; second development in the backwards direction with 10 mL acetone, migration distance 45 mm, drying 3 min. Detection under UV 254 nm, UV 366 nm and white light. For HTpSPE and μL-flow injection analysis–TOFMS the target analyte zone was eluted with the TLC–MS Interface into autosampler vials with acetonitrile – 10 mM ammonium formate 1:1, flow rate 0.2 mL/min, Elution time was 60 s. An HPLC system was coupled via a PEEK capillary and a nano-electrospray ionization interface to a TOFMS without an analytical column. The mean recovery for a pesticide mixture spiked into fruit and vegetable extracts was between 86 % and 116 % with %RSDs of 1.5–10 % (n = 5).

J. Planar Chromatogr. 3, 90-91 (1990). In situ measurement of the reaction mixture (1 mmol/L L-TAPA in 50 mmol/L Tris-HCL-buffer, pH 8.2, containing 25 mmol/L calcium chloride) and 0.1 mL of a trypsin containing sample on cellulose by absorbance at 405 nm. Sample size: 1 µL. - Densitometer response was linear in the concentration range from 10 to 200 µg of trypsin per mL; very good agreement between standard procedure and the microassay, good reproducibility.

J. of Chromatogr. A 1218 (40), 7203-7210 (2011). Investigation of a new method of modifying the elution behaviours of nanostructured thin film UTLC stationary phases, which provides high sensitivity and rapid separation over short distance. Fabrication of macroporous normal phase silica thin films (approx. 5 µm thick) using glancing angle deposition (GLAD). The stationary phase morphology was modified to tune migration velocity, analyte retention, and overall separation performance by reactive ion etching and a subsequent annealing treatment. This allowed the fabrication of adjacent concentration and separation zones with markedly different elution properties. Still the GLAD UTLC phase with concentration zone behaved consistent with traditional TLC and HPTLC layers with concentration zone. The new stationary phase can focus large volumes of a low concentration dye mixture applied as spots into narrow bands.

Trends Anal. Chem. 81, 110-117 (2016). Review of the application of microfabricated pillar arrays as stationary phase for chromatography, including the use of silicon wafers with high cylindrical pillars, modified with a C-18 reversed-phase coating for TLC plates. Chromatographic efficiency increased three to five times compared with commercial TLC plates.

Chromatographia 20, 99-101 (1985). TLC of food dyes, indigo carmin, cochineal red, acid amaranth I, orange yellow S and tartrazine G on thin MgO layers with mixtures of 15 % sodium citrate and methanol in proportions from 9:1 to 1:9. The best proportion of the developing solvent mixture was 6:2. It permits the full separation of the dye mixture from a 0.3 mL sample solution with concentrations of 1 x 10 to minus 6 mole/liter.

TLC on silica with chloroform -methanol - acetic acid - water 80:10:8:2. Detection by spraying with 2 % eosin in ethanol and by UV.