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Capillary Zone Electrophoresis of Eleven Priority Phenols with Amperometric Detection
Author(s) -
Chen IChih,
Whang ChenWen
Publication year - 1994
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199400055
Subject(s) - chemistry , capillary electrophoresis , amperometry , chromatography , phenols , electrophoresis , capillary action , organic chemistry , electrode , electrochemistry , materials science , composite material
A scheme for separation and detection of eleven priority phenols using capillary zone electrophoresis (CZE) coupled with amperometric detection is described. With a capillary of I.D. 50 μm and length 62.5 cm at 9 kV and an electrophoretic buffer of 20 mM CHES (pH 10.1), complete separation of the eleven compounds was achieved in less than 17 min. Amperometric detection was carried out using a carbon fiber microelectrode of diameter 9 μm inserted into the end of the detection capillary. Linearity over two orders of magnitude was generally obtained for the eleven priority phenols. With an electrode potential+1.10 V ( vs . Ag/AgCl reference), the concentration limits of detection were in the sub‐ppm (10 −6 M) level. This method was successfully applied to analysis of priority phenols in industrial waste water.