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Reference type: Journal
Authors: Kaiser GG, Andersson JT
Article Title: Sorbents for liquid-chromatography based on the footprint principle - an exploratory-study.
Publication date: 1992
Journal: Fresenius Journal of Analytical Chemistry
Volume: 342
Issue: (10)
Page numbers: 834-838.
DOI: 10.1007/BF00322144

Abstract: The possibility of synthesizing normal-phase chromatographic sorbents with selectivity and specificity for an organic compound was investigated using two approaches. The generation of "footprints", imprinted adsorption sites reflecting the shape of an added template molecule, was attempted by imprinting aluminum ion-doped silica gel and by modifying silica gel with diazomethane. In both cases phenanthrene was used as template molecule. Surprisingly, the diazomethane-modified silica gels showed a stronger retention for all polycyclic aromatic compounds than unmodified silica up to a carbon load of ca. 1.5%. The different gels synthesized according to the first principle showed somewhat different selectivity towards various polycyclic aromatic compounds. In neither case was a specificity toward phenanthrene observable

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