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T. D. Khokhlova
Adsorption
of cytochrome C on hydroxylated and thrimethylsililated silica gels
Abstract
Adsorption
of cytochrome C on series of hydroxylated and modified with
thrimethylchlorosilane silica gels with pore diameter from 2,5 to 240 nm was
compared. At pH 7 (in 2% isopropanole in water) the greatest adsorption (on 1 g
of silica) on the hydroxylated and hydrophobic silicas with pore diameters
5 - 14 and 14 – 36 nm, respectively,
was observed. Electrolyte (NaCl) introduction displaced the maximum of
adsorption on the hydroxylated silicas to pore diameter 2,5 – 5 nm, but on the
hydrophobic silicas that maximum was not displaced. Kinetic and pH-dependence of the adsorption were investigated
too.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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