Hg. Lee et Hw. Jarrett, GLUCURONIC ACID-SILICA, A NOVEL SUPPORT FOR HIGH-PERFORMANCE CATION-EXCHANGE CHROMATOGRAPHY, Journal of liquid chromatography, 18(6), 1995, pp. 1113-1122
Glucuronic acid was covalently coupled to aminopropyl derivatized sili
ca by reducing the Schiff base with NaCNBH3. This glucuronic acid-sili
ca has a functional pKa in the pH 3-4 range and binds 202 mg hemoglobi
n per gram material at pH 5. The support is a high-performance cation-
exchanger and exhibited only minor hydrophobic interaction with applie
d samples. It also gave reasonably constant retention of the proteins
tested.