Poly(ethylene glycol) as Impregnator for Silica Gel in Salting-Out Thin-Layer Chromatography of Some Co(III) Complexes |
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Authors: | V. Živković-Radovanović G. Vucković |
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Affiliation: | (1) Faculty of Chemistry, University of Belgrade, P.O. Box 158, 11001 Beograd, Serbia and Montenegro |
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Abstract: | Silica gel impregnated with poly(ethylene glycol) of different molecular mass (400, 1000, 1540, 4000, and 5500) was investigated for salting-out thin-layer chromatography of 15 mixed aminocarboxylato Co(III) complexes using eight ammonium sulphate solutions as mobile phases. Regularities established earlier for non-impregnated adsorbents are also valid in this work. Poly(ethylene glycol) of high molecular mass increases the hydrophobicity of the adsorbent. Positive linear dependence of RM values and of salting-out efficiency on average poly(ethylene glycol) molecular mass was usually observed. In contrast with non-impregnated silica gel, separation was achieved between complexes with the smallest hydrocarbon groups. |
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Keywords: | Thin-layer chromatography Silica gel impregnated with poly(ethylene glycol)s Salting-out Mixed aminocarboxylato Co(III)complexes |
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