β Scribed by Ciavatta, Claudio ;Govi, Marco ;Gessa, Carlo
No coin nor oath required. For personal study only.
The aim of this work was to characterize the fulvic acids (FA) extracted from peat by use of capillary electrophoresis (CE). Two FA extracts have been obtained using two different extractants (0.1 M NaOH and 0.1 M NaOH plus 0.1 M Na~4~P~2~O~7~, Na+PP). The CE runs wre performed using a coated silica capillary, and several buffer solutions at different PH values. The results obtained show that the Fa extracts may be well characterized by CE even if the isolelectric point of the fulvic compounds is very low. The best fractionation has been obtained using a buffer borate at PH 8.9 as funning buffer. The charcterization of the two extracts also showed some important differences between the NaOH extract and the Na+PP extract.
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## Abstract Several acidic xylooligosaccharides containing unsaturated βhexenuronic acidβ units, i.e. 4βdeoxyβLβthreoβhexβ4βenopyranosyβlurinic acid (4βΞU) units, were separated as their alditol derivatives by capillary zone electrophoriesis in 438 mM borate buffer (pH 10.3) and were detected selec