Abstract
The retention of more than 70 voltatile organic compounds of different classes was studied by steam chromatography using aqueous solutions ofN-methylmorpholineN-oxide as the stationary liquid phase (SLP). The effects of temperature and composition of the mobile phase on the retention factors (k) for polar and nonpolar sorbates were elucidated. An unusual order of elution of aliphatic alcohols was noted, namely,tert-butyl alcohol <sec-butyl alcohol < isopentyl alcohol <isobutyl alcohol<isopropyl alcohol <n-pentyl alcohol <n-butyl alcohol <n-propyl alcohol <ethanol <methanol. The retention of cyclohexanol was longer than those of benzyl alcohol andn-hexyl alcohol. Nitrogen-containing compounds were selectively separated on the water-organic SLP studied. For example, the retention of aniline was much longer than those of its derivatives,N,N-dimethylaniline andN,N-diethylaniline, having higher boiling points.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1077–1084, June, 2000.
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Berezkin, V.G., Sorokina, E.Y., Sokolov, A.I. et al. Aqueous solution ofN-methylmorpholineN-oxide as a stationary liquid phase in steam chromatography. Russ Chem Bull 49, 1071–1078 (2000). https://doi.org/10.1007/BF02494896
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DOI: https://doi.org/10.1007/BF02494896