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Mixed C 18 and C 1 modification on an optical fiber for chromatographic sensing
Author(s) -
Zhou Leiji,
Wang Kemin,
Zuo Xinbing,
Choi Martin M. F.,
Chen Yunqing,
Huang Shasheng
Publication year - 2003
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.200305597
Subject(s) - selectivity , chromatography , fiber , optical fiber , toluene , phase (matter) , fiber optic sensor , chemistry , chromatographic separation , analytical chemistry (journal) , materials science , high performance liquid chromatography , optics , organic chemistry , physics , catalysis
An optical fiber‐chromatographic sensor, aiming at simultaneous and selective response to multiple components following a chromatographic separation, is described. We report an improved approach for immobilization of octadecyl (C 18 ) and methyl (C 1 ) moieties as stationary phase on an optical fiber suitable as a sensing phase for organic solutes. By this approach, the stability and lifetime of the sensing layer as well as the detectability and retention behavior of the chromatographic sensor could be improved. Infrared spectroscopy was employed to confirm the presence of C 18 and C 1 moieties on the modified surface of the optical fiber. The chromatographic sensor was applied, with good sensitivity and chemical selectivity, to the simultaneous separation and detection of bromobenzene and toluene, using water as the mobile phase.