J. Planar Chromatogr. 11, 51-55 (1998). Development of a simple theoretical model for the study of the TLC behavior of metal ions. The model is represented by an equation in which the retention factor of a metal ion, the concentration of competing ion, and the constants a and b are of importance. TLC of 33 metal ions on silica gel with mixtures of methyl isobutyl ketone and formic acid. Experimental and theoretical results were in good agreement for most of the metal ions.

J. Planar Chromatogr. 15, 107-115 (2002). TLC of some metal cations on silica gel with micellar mobile phases containing sodium dodecyl sulfate; e.g. separation of Au, Cu, and Ag on silica gel with 0.01 m SDS - 0.01 M l-tryptophan or l-histidin 1:9. Visualization as coloured spots by application of appropriate detection reagents (i. a. dithizone, aqueous potassium ferrocyanide, dimethylglyoxime, aluminon, yellow ammonium sulfide). Detection limits for Fe, Cu, Zn, Cd, and Hg were also determined. Selective and rapid procedure.

Acta Chrom. 9, 113-122 (1999). Selective separation of Hg2+ from spiked sea and industrial waste water samples. TLC of some inorganic pollutants on silica gel impregnated with potassium thiocyanate (0.01 -2.0 M) 1:1 mixtures of sodium chloride (0.01 - 1.0 M) and formic acid (0.01 - 1.0 M) as mobile phases. Detection with 5 % potassium ferrocyanide in water (for Fe3+, Cu2+, UO22+, VO2+, and Tl+), 0.05 % dithizone in carbon tetrachloride (for Zn2+, Cd2+, Pb2+, Bi3+, Hg2+, Ag+, and Tl+), 1 % dimethylglyoxime in ethanol (for Ni2+ and Co2+), 0.1 % aluminum (for Al3+) and 0.01 % thorine (for Th4+ and Zr4+). The effect of surfactants, halides and oxyanions on the separation of Hg2+ from UO22+ and Fe3+ was examined. The method was used to identify Hg2+, Pb2+, Cd2+, and Zn2+ in synthetic heavy metal sludge samples.

Anal. Chem. 60, 722-724 (1988). TLC of nonabsorbing and nonfluorescing anions on DEAE cellulose or cetrimide-modified silica with sodium salicylate as the eluting ion. Detection under UV 312 nm. Detection limit in ng level.

Application to real samples. J. High Resol. Chromatogr. 8, 135-139 (1985). Separation of inorganic and organic mercury dithizonates on silica (after conditioning with 5 M NH3) with hexane - acetone 85:15. Quantification by densitometry at 470 nm.

J. Chromatogr. 628, 148-152 (1993). TLC on silica with 15 solvent systems. Discussion of the influence of solvent systems on Rf values of the complexes, and the dependence of the Rf values on the number of carbon atoms in the hydrophobic part of the ligands. Also discussion of the separation mechanism.

Chromatographia 67 (3-4), 259-267 (2008). Investigation of saturated aqueous solutions of 28 different salts used as potential mobile phases for salting-out TLC, on silica gel, of a series of four mixed bis-aminocarboxylato cobalt(III) complexes. Confirmation of three alkali metal chlorides, and four alkaline earth metal chlorides, for linear dependences previously established on different adsorbents with (NH4)2SO4 solutions by linear regression analysis of chromatographic data obtained for fifteen mixed aminocarboxylato Co(III) complexes (four series) with solutions of ammonium chloride. Comparison of separation achieved with different salts. Li+, Mg2+, and Ca2+ chlorides are most suitable.

Anal. Chem. (Fenxi Huaxue) 12, 1077-1078 (1984). (Chinese). (Separation of rare earth elements by thin-layer chromatography. ) TLC of rare earth elements, La, Ce, Pr, Nd, SM, Eu, Tb and Ho on silica with monotetradecyl phosphate (p538)- ethyl acetate - nitric acid in varying proportions. The Rf values of the elements involved increase with their atomic system number.