I. Investigation of the behaviour of mixed aminocarboxylato cobalt(III) complexes on silica gel. J. Chromatogr. 609, 427-431 (1992). Investigation of 24 mixed aminocarboxylato cobalt(III) complexes of anionic and neutral types, containing nitro ligands with or without ammonia ligands and belonging to six homologous series by salting-out TLC on silica. Aqueous ammonium sulfate solution in water. Proposal of a mechanism based on hydrophobic interaction between the sorbate and the sorbent.

Chinese J. Chromatogr. (Sepu) 13, 203-204 (1995). TLC on silica with acetone - ethyl acetate - methanol - water. Detection by exposure to iodine vapors. Calculation of the Rf values. Rf (Co) > Rf (Pb) > Rf (Un) > Rf (Cu) > Rf (Ni) > Rf (Mu).

Chromatographia 45, 347-350 (1997). Use of the thin-layers of lanthanum silicate to study the chromatographic behavior of 28 metal ions in aqueous and mixed systems. Discussion of fast ternary and binary separations and various others.

J. Planar Chromatogr. 14, 16-20 (2001). RP-TLC of 3d metal ions (e.g. VO2+, Fe3+, Ti4+, Mn2+, Zn2+,) on silica gel impregnated with silicone fluid DC200, tri-aryl phosphate, and tri-n-butyl phosphate with mixtures of DMSO and HNO3. The most effective eluents prepared from DMSO and 1 M HNO3 were mixtures in which the concentration of the acid is between 0.1 and 0.7 M.

J. Planar Chromatogr. 19, 297-301 (2006). TLC of U(VI), Th(IV), the lanthanides Ln(III), (La(III), Ce(III), Pr(III), Sm(III), Gd(III), Er(III)), Co(II), Ni(II), and Cu(II) on silica gel using mobile phases containing tributylphosphate, trioctylphosphine oxide (TOPO), and di(n-butyl)dithiophosphoric acid (HDBDTP). The results obtained showed that the retention factors of U(VI), Th(IV), and Ln(III) are enhanced when a mixture of HDBDTP and TOPO is used. TLC on silica gel with xylene - ethyl methyl ketone - N,N-dimethylformamide 16:2:1 in an unsaturated chamber. Detection with 0.05 % arsenazo(II) for U(VI), Th(IV), and Ln(III) and with 0.1 % rubeanic acid in ethanol for Co(II), Ni(II), and Cu(II).

J. Chromatogr. A 1446, 141-148 (2016). Investigation of stationary phase gradients for chelation TLC as a tool to separate a mixture of metal ions. Preparation of the gradient stationary phases using controlled rate infusion from precursors containing mono-, bi-, and tri-dentate ligands, specifically 3-aminopropyltriethoxysilane, N-[3-(trimethoxysilyl)propyl] ethylenediamine, and N-[3-(trimethoxysilyl)propyl] diethylenetriamine. Confirmation of the presence and the extent of gradient formation using N1s X-ray photoelectron spectroscopy. The results showed that the degree of modification was dependent on the aminosilane precursor, its concentration, and the rate of infusion. Comparison of the separation of four transition and heavy metals (Co2+, Pb2+, Cu2+, and Fe3+) by TLC on gradient and uniformly modified plates with a mobile phase containing a stronger chelating agent, ethylenediaminetetraacetic acid. Manipulation of the retention of the metal ions by varying the surface concentration of the chelating ligands. The order of retention on unmodified plates and on plates modified with a monodentate ligand was Fe3+>Cu2+∼Pb2+∼Co2+, while the order of retention on plates modified with bi- and tri-dentate ligands was Fe3+>Cu2+>Pb2+∼Co2+. Fe3+ and Cu2+ were more sensitive to the concentration of chelating ligand on the surface and showed lower hRf values with increasing ligand concentration than Pb2+ and Co2+. Complete separation was achieved using a high concentration of the tridentate ligand coupled with a longer time for modification, giving a retention order of Fe3+ > Cu2+ > Co2+ > Pb2+.

J. Liquid Chrom. 8, 2969-2989 (1985). Separation of Re(VII), Mo(VI) and V(V) ions on alumina with aliphatic alcohols - HCl mixtures. Visualization with 10 % solution of Tin(II) chloride in 6 N HCl and with 50 % aq. NH4SCN solution.