Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
39, Number 8, August 2001, pp. 313-320
Comparative
Studies of Gas Chromatographic Properties of New Packings with Chemically Bonded
ComplexesI.
Rykowska* and W. Wasiak
Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 60-780 Pozna´n,
Poland
Specific
interactions of aliphatic linear and branched hydrocarbons as well as cyclic
and aromatic hydrocarbons with new packings containing chemically bonded complexes
of transition metals are studied. The possibility of using these packings to
separate these compounds is also discussed. The packings under study contain
complexes of Cu(II) and Cr(III) chemically bonded to the silica surface. Chlorides
of these metals are bonded to the silica surface by the use of the ketoimine
group originally from 2-(3-triethoxysililpropylimino)-3-(n-buthyl)-pentanon-4.
In order to determine an influence of the performed modification to gas chromatographic
properties of the packings, such retention parameters as retention factor, retention
index, molecular retention index, and specific retention volume are measured
for these compounds. Based on the obtained values, a trial is taken to determine
an influence of the nature of the bonded metal from the complex on the retention
of the adsorbates under study and a dependence between a structure of an adsorbate
molecule and values of charge–transfer interactions with the bonded metal
complexes.
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