J. Planar Chromatogr. 32, 157-163 (2019). HPTLC of lead in the presence of other metal ions and synthetic alloys on 20 % tri-n-butyl phosphate (TBP) or tri-n-butylamine (TBA)-impregnated silica gel with butanol - 8 M nitric acid in varying ratios. Quantitative determination by spectrophotometry of the scratched zone detected with the dithiozone reagent.

J. Planar Chromatogr. 3, 349-351 (1990). TLC of Co(II), Mn(II) and Ni(II) as carbonates, chlorides and sulfates on sieved soil as layer using distilled water and buffer pH 5.2, 7.2 and 9.2 as eluent; detection by spraying with 1% ethanolic solution of diphenylcar-bazide.

J. Planar Chromatogr. 5, 289-291 (1992). Systematic study of the TLC behavior of Ti(IV), V(V), Cr(III), Mn(III), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) on silica prepared with 3% solutions of amines (Primene JM-T, Amberlite LA-1, Alamine 336 and Aliquat 336) and 0.01 M succinic acid. Visualization by spraying with a solution of 1% 8-hydroxyquinoline in ethanol - water 1:1 followed by exposure to NH3.

J. Liquid Chromatogr. 18, 1671-1687 (1995). TLC on silica, impregnated with 1,10-phenanthroline, DMG and EDTA, with a) pyridine - benzene - acetic acid - water 6:5:8:4, b) butanol - benzene - formic acid 5:10:9, c) pyridine - benzene - acetic acid - water 5:5:4:1. Detection by spraying with 0.1% ß-naphthol in methanol. Quantification by AAS.

J. Planar Chromatogr. 10, 44-47 (1997). Use of off-line hyphenation of two analytical methods, TLC and AAS, for a preliminary study of the stability of mixed zinc carboxylato complexes with two nicotinic acid ligands during chromatographic separation on silica. The reproducibility of the TLC-AAS method was found to be 91%; the procedure is simple, does not require additional expensive equipment and can be used in many branches. TLC of zinc carboxylato mixed-ligand complexes on silica with methanol - water. Detection by spraying with a 0.04% solution of 4-(2-pyridylazo)resorcinol in methanol - water 1:1.

Behavior of metal ions on titanium(IV) silicate ion-exchanger. J. Planar Chromatogr. 13, 354-358 (2000). TLC of 30 metal ions on titanic silicate with aqueous and mixed mobile phases. Rapid separations of Al3+, V5+, Hg2+, Cd2+ and other ions from numerous other metal ions, and many ternary and binary separations, have been developed.

Acta Chrom. 11, 196-203 (2001). The effects of the stationary and the mobile phases on chromatographic behaviour in the separation of water-insoluble complexes of diethyldithiocarbamate with Cd2+, Co2+, Cu2+, Fe2+, Hg2+, Mn2+, and Pb2+ have been studied by TLC with polar adsorbents (silica gel, previously activated for 40 min at 110 ºC, and neutral aluminum oxide 60 Type E, activated for 4 h at 150 ºC) with benzene - chloroform after chamber saturation for 2,5 h. The proportion of the components of the mobile phase was varied. Visualization by spraying with 5 % aqueous solution of CuSO4 to form a more durable yellow–green chelate (436 nm). The results obtained show that metal ions in the form of their chelates with DDTC can be separated under the presented conditions.

J. Planar Chromatogr. 28, 343-351 (2015). TLC of cobalt(II) (1) and copper(II) (2) on silica gel impregnated with cetyltrimethylammonium bromide micelles in water. The mobile phase was acetone - 3 M hydrochloric acid 99:1 with 2.6 mM hexamethylenediamine. Detection by spraying with 1 % potassium ferrocyanide for (1) or 1% dimethylglyoxime solution in ethanol for (2). Quantitative determination by absorbance measurement at 470 and 615 nm, respectively. The hRF values for (1) and (2) were 65 and 26, respectively. The LOD was 0.02 ng/L for (1) and 0.1 µg/L for (2).