J. Planar Chromatogr. 6, 70-73 (1993). TLC of non-ionic surfactants (e.g. nonylphenyl ethylene oxide oligomers) according to the length of the ethylene oxide chain on aluminum oxide with chloroform - acetonitrile mixtures. The optimum separation of pairs of surfactant oligomers with the longest ethylene oxide chains required eluents of the highest strength (highest acetonitrile concentration).

Acta Chrom. 17, 272-291 (2006). TLC on silica gel with 0.1 M glutamic acid – methanol – acetone 1:1:1 has been found to be highly suitable for separation and identification of cationic and non-ionic surfactants. Visualization by use of Draggendorf reagent or iodine vapour. Spectro-photometric determination of tetradecyltrimethylammonium bromide at 670 nm after the spot extraction. The method has been used for identification of tetradecyltrimethylammonium bromide and Triton TX-100 in saline water, river water, and domestic waste water. The effects of sample pH, polarity of the alcohol and nature of the amino acid in the mobile phase, and the presence of alumina, kieselguhr, or cellulose in the silica gel layer have been examined.

Analyst 112, 933-943 (1987). A review on TLC of synthetic food antioxidants with more than 20 references.

Analysis of light protection agents and preservatives). (German). Parfümerie und Kosmetik 77, 336-341 (1996). HPTLC of preservatives (butyl-, propyl-, ethyl-, methyl-paraben, phenoxyethanol) on silica with acetone - water. Detection under UV. Quantification by densitometry (details s. Macherey & Nagel Applic. 48). TLC is for the quantitative and qualitative analyses of preservatives by far superior compared with all other procedures regarding the price-performance ratio and time requirements.

J. Chromatogr. 503, 293-357 (1990). Review with about 50 references on the analysis of chemical warfare agents, organophosphorus compounds, vesicant compounds, irritants, etc. by TLC.

Anal. Chem. 67, 315R-348R (1995). A review with 565 references on the analysis of coal, crude oil, shale oil, heavy oil, lubricants, natural gas, refined products and source rocks, including TLC applications in the area.

J. Chromatogr. A 1462, 134-145 (2016). Development of simple method for the separation of different colored pigment formulations used in the printing materials on food packaging to control the quality and safety of the package. HPTLC on silica gel by automated multiple development with a 9-step gradient based on ethyl acetate, methanol and water, and ending with toluene. Good resolution of differently soluble constituents of the pigment formulation like additives and coating materials. The results obtained by multi-detection allowed a first assignment of the differently detectable bands to particular chemical substance classes, enabled the comparison of different commercially available pigment batches and revealed substantial variations in the composition of the batches. Characterization of single unknown pigment constituents by HPTLC-MS and HPTLC combined with ATR-FTIR. The new HPTLC method for routine quality control for incoming pigment batches and monitoring of internal pigment production processes secures a consistent pigment composition, resulting in consistent ink quality. Hyphenation of HPTLC with the Aliivibrio fischeri bioassay revealed information on the toxicological potential of different pigment compounds which helps guarantee consumer safety, especially in regard to readily permeable pigment components.

J. Planar Chromatogr. 9, 363-367 (1996). Semipreparative TLC of coal liquefaction extracts on silica with pyridine (for 42 mm) and acetonitrile (for 77 mm) as mobile phases. Separation into (1) material immobile in both solvents; (2) material mobile in the first solvent but not in the second; and (3) material mobile in both solvents.