期刊
CHROMATOGRAPHIA
卷 62, 期 1-2, 页码 91-97出版社
SPRINGER HEIDELBERG
DOI: 10.1365/s10337-005-0580-1
关键词
thin-layer chromatography; silica gel impregnated with poly(ethylene glycol)s; salting-out; mixed aminocarboxylato Co(III)complexes
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 R-M 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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