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Budanova N. Yu., Shapovalova E. N., Lopatin S. A., Varlamov V. P., Shpigun O. A.
An Investigation of
Retention and Separation Abilities of Silica Modified by Low-Molecular Weight
Chitosan as a New Chiral Selector
Abstract
Adsorption
of low-molecular weight chitosan on silica and silica treated by Ca(NO3)2
and Cu(NO3)2 was studied. Maximum adsorption of chitosan
for unmodified silica was obtained. Retention of various compounds such as
amines, aminophenols, nitrophenols, nitroanilines, nitrobenzene, benzene,
tert-butylbenzene, naphthalene, antracene on chitosan and chitin coated silica
was investigated. It was established that coated silica retention ability
increases for more polar substances and less polar mobile phases. The ability
to separate of enantiomers on chitosan coated silica was examined
Copyright (C) Chemistry Dept., Moscow State University, 2002
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