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Direct analysis of hydrogen peroxide by capillary electrophoresis
Author(s) -
Shihabi Zak K.
Publication year - 2006
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200600034
Subject(s) - hydrogen peroxide , capillary electrophoresis , chemistry , catalase , aqueous solution , absorption (acoustics) , chromatography , stacking , capillary action , peroxide , electrophoresis , analytical chemistry (journal) , photochemistry , enzyme , organic chemistry , materials science , composite material
A method is described for analysis of hydrogen peroxide directly by CZE in borate buffer based on its absorption in UV light at 185 nm, without reaction with dyes. The absorption at 185 nm was about 3.5 times better than that at 214 nm. Hydrogen peroxide was generated enzymatically from glucose in aqueous solutions and in serum and was removed by the catalase enzyme. To improve the sensitivity of detection, samples were concentrated on the capillary based on stacking by ACN. The method is rapid (∼7 min) and specific.