Premium
Capillary electrophoresis/electrochemical detection system with on‐line deoxygenation
Author(s) -
Jin Wenrui,
Dong Qian,
Yu Daiqing,
Ye Xiaoying,
Li Wei
Publication year - 2000
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/(sici)1522-2683(20000501)21:8<1540::aid-elps1540>3.0.co;2-#
Subject(s) - deoxygenation , capillary electrophoresis , capillary action , chromatography , chemistry , electrophoresis , line (geometry) , analytical chemistry (journal) , materials science , biochemistry , geometry , mathematics , composite material , catalysis
A capillary electrophoresis (CE)/electrochemical detection system with on‐line deoxygenation was developed, consisting of a deoxygenation injector, a deoxygenation protector, and an electrochemical detection cell. When the system was utilized for 60 min, the steady‐state current of oxygen detected could be dropped to 3% of the original value for the gold/mercury amalgam electrode and to 8% of the original value for the gold electrode, and the limit of detection could be decreased two orders of magnitude for the reducible analytes such as Tl + (from 3.1 × 10 —5 mol/L to 8.0 × 10 —7 mol/L) and metronidazole (from 3.8 × 10 —5 mol/L to 4.0 × 10 —7 mol/L).