Chromatographia 22, 19-20 (1986). TLC of copper, iron and manganese on microcrystallic cellulose with acetone - HCl - water 8:1:2. Detection by spraying with rubeanic acid and exposure to NH3 vapor. Detection limit 20 mg/g of material. Developing solvent quoted was best under II investigated.

Detection by spraying with chlorophosphonazo-mN.

III. Thin- layer chromatographic separation of noble metals on stannic pyrophosphate.) (Chinese). J. Wuhan Univ. 1, 64-70 (1987) (Wuhan Daxue Xuebao, Ziran Kexueban). TLC of binary and ternary mixtures of noble metals, Ru, Au, Pd, Pt, Rh, Os, Ir, Ag, on silica-tin pyrophosphate with many acidic, basic and neutral solvent systems. Study of the relationship between Rf values and the concentration of trimethylamine in developing solvents, and the effect of ethanol content on TLC behaviors of the metals.

J. Planar Chromatogr. 2, 142-147 (1989). TLC of Mo, Re, V, and W ions on alumina with HCl solutions of sodium thiocyanate and SnCl2 in different concentration. It has been shown that the differences in the ionic nature and stability of the thiocyanate complexes depend on acidity and on the thiocanaty/SnCl2 ratio. Optimum conditions for the separation of these metal ions (by this and other chromatographic techniques) can be predicted from TLC on alumina.

J. Chromatogr. 504, 179-185 (1990). Study of the TLC behavior of the metal complexes of tetraphenylporphine of 12 rare earths on C-18 silica and aminopropyl silica with methanol – water – acetyl acetone – diethylamine in different proportions. Detection by densitometry at 420 nm.

Chromatographia 31, 281-284 (1991). TLC of metal ions on synthesized carbamide - formaldehyde polymer or on cellulose with 11 neutral and acidic eluents. Detection by spraying with saturated aqueous solution of (NH4)2S, solution of dithizone (0.1%) in chloroform, and solution of 8-hydroxyquinoline (0.5%) in 60% aqueous ethanol and exposing to NH3 and under UV 254 nm. Comparison of both layers.

J. Liquid Chromatogr. 16, 1833-1843 (1993). Normal-phase, reverse-phase and chelation TLC of Pb2+, Hg22+, Hg2+, Ti+, Bi3+, Sn4+, and Sb3+ on silica, silica impregnated with DMSO or 20% tributyl amine or 20% tributyl phosphate in benzene, and silica impregnated with EDTA, with DMSO - HNO3 and DMSO - HCl systems as mobile phases. Discussion of the effect of solvent composition on migration of cations, and the effect of EDTA and DMSO on Rf values. Quantitative separation of Pb2+ from the others.

J. Planar Chromatogr. 8, 463-466 (1995). TLC of chlorides or nitrates of copper, cadmium, zinc, nickel, cobalt and lead on silica with 1.0 M sodium formate - 1.0 M potassium iodide 1:9. Detection with 0.1% dithizone in carbon tetrachloride (Zn, Cd, Pb), with 1% dimethylglyoxime in ethanol (Ni, Co), with 1% aqueous solution of potassium ferrocyanide (Cu). Titration resp. AAS determination after elution. The titrimetric determination is considered as useful for the quantification of Cu in the concentration range 100-500 µg/µl whereas AAS was useful for determination of Cu at concentrations in the range 2-8 µg/mL.