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Investigation of the relationship between migration time and pKa in capillary electrochromatography

✍ Scribed by Mizukami, Masahiro ;Nimura, Noriyuki ;Kinoshita, Toshio ;Hanai, Toshihiko ;Hatano, Hiroyuki

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
285 KB
Volume
14
Category
Article
ISSN
0935-6304

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✦ Synopsis

Short Communications BNDHP achieved using a mobile phase containing 12 mM y-CD (when the separation factor was 1.12).

The system was also applied to the separation of the enantiomers of l,l'-bi-Z-naphthol, but without success: the separation factor was only 1.03 when a 4 : 6 acetonitrilewater mixture containing 13.3 mM y-CD was used as the mobile phase. The solubility of y-CD in the 4 : 6 acetonitrilewater mixture was ca. 15 mM. The enantioselectivity of the separation could possibly be increased by derivatizing the y-CD to increase its solubility.

Further work is in progress in our laboratory in order to determine which types of enantiomer can be separated by employing y-CDs as a mobile phase additive.

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