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Separation of fungicides by micellar electrokinetic capillary chromatography
Author(s) -
Penmetsa Kumar V.,
Leidy Ross B.,
Shea Damian
Publication year - 1997
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.1150180210
Subject(s) - micellar electrokinetic chromatography , chromatography , electrokinetic phenomena , chemistry , capillary electrophoresis , capillary electrochromatography , capillary action , materials science , composite material
Capillary electrophoresis with ultraviolet detection (CE/UV) of selected fungicides (carbendazim, metalaxyl, propiconazole, and vinclozolin) using different buffer compositions was investigated. Capillary zone electrophoresis (CZE) with 10 m M sodium phosphate (pH 7.0) was not useful in separating the four fungicides used in this study. However, the four fungicides were well resolved by employing micellar electrokinetic capillary chromatography (MEKC). Among the two surfactants tested in MEKC, bile salts provided better separation compared to sodium dodecyl sulfate (SDS). A buffer consisting of 10 m M sodium phosphate with 100 m M sodium cholate and 10% methanol (pH 7.0) gave best results; excellent separation of the four compounds was achieved in less than 15 min. The CE/UV method was validated by analyzing deionized and lake‐water samples fortified with known concentrations of the four fungicides. Average recoveries of the fungicides in lake water at 4 μg/L level ranged from 42 to 87%.