J. Liq. Chromatogr. Relat. Technol. 40, 863-871 (2017). Comprehensive literature review during 1983-2016 of the application of TLC for the identification, separation, and determination of surfactants, including the use of green solvents and ionic liquids.

Chromatographia 31, 152-156 (1991). Determination of the retention of 9 nonylphenyl ethylene oxide oligomers in 15 reverse-phase chromatographic systems using silicone oils of various molecular mass impregnating agents and silica, cellulose and alumina supports. Evaluation of the data with principal component analysis carried out on the covariance and the correlation matrices. Discussion of the effect of nature of support and impregnating agent on lipophilicity.

(Hungarian). Olaj, Szappan Kozmetika 48, 89-93 (1999). TLC of alkypoly-oxythylene-carboxylate (AOEK) or alkyl-phenyl-oxyethylene-carboxylate (AFOEK) on silica with chloroform 85:15. Detection by spraying with Dragendorff's reagent.

(Japanese) (Studies on the analysis of various detergents. I. Identification of surfactants in heavy duty liquid laundry detergents by two-dimensional thin-layer chromatography.) TLC combined with other techniques as identification method for surfactant components. Two-dimensional TLC of nonionic and anionic surfactants on silica with 1) MEK - benzene - ethanol - water 3:6:3:1, 2) 4-methyl-2-pentanone -1-propanol - acetic acid - acetonitrile 20:6:1. 6:1. Detection by UV, IR and NMR.

J. Planar Chromatogr. 3, 77-78 (1990). Quantitative TLC determination of Polidocanol (mixture of monolauryl ethers of polyethyleneglycols) on silica with dichloromethane - methanol 15:2 with traces of water as eluent. After drying immersion for 2 s in Dragendorff’s reagent. Quantification by densitometry (absorbance at 550 nm). Recoveries for gel 99.85 % and for ointments 103.4 %; reproducibilities 2.9 % and 1.8 % resp.

J. Liq. Chrom. & Rel. Technol. 22, 1247-1256 (1999). HPTLC of surfactants (Jugopon, Texapon N 25, Rewoquat WE 20, W 75, Brij 35, Tenzilin AA 65) on silica gel with ethanol and ethanol - water mixtures with up to 20% of water as mobile phase. Detection by reaction with i.a. methylene blue and bromophenol blue and by dipping into water after development. Only anionic surfactants gave white spots with gas bubbles (rarely and slightly some nonionic surfactants, and never cationic). Therefore, this occurrence can be used for detection (and identification) of anionic surfactants, and for determination of polarity of surfactants.

of Oil Refinement (Shiyou Lianzhi) 8, 37-40 (1984). (Chinese) (The analysis of the additives in lubricating oil by thin-layer chromatography.) TLC of dispersing agents (alkyl-salicylates, thio-alkyl-phenolates), antioxidants (dithio-phosphates, dialkyl-dithio-phosphates) and their intermediates on silica with various developing systems. Detection by UV. Sensitivity 10 ng.

J. Planar Chromatogr. 5, 267-270 (1992). Determination of the lipophilicity of 17 non-ionic tensides (nonphenyl and tributylphenyl ethylene oxide oligomers) by RPTLC with methanol , ethanol , and 1-propanol as organic modifiers of the aqueous mobile phase. Rm values decreased linearly with increasing concentrations of organic modifier. TLC on silica impregnated by overnight predevelopment with hexane - paraffin oil 95:5, and aqueous methanol, ethanol and 1-propanol (various alcohol concentrations). Detection with modified Burger reagent (G.F. Longman, The Analysis of Detergents and Detergent Products, Wiley and Sons, London, (1977), 517).