Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/76948
Title: Separation and Determination of Pesticides by Capillary Electrophoresis. I. Rapid Separation of Fifteen N-methylcarbamate Insecticides via Micellar Electrokinetic Chromatography
Authors: Wu, Y.S.
Lee, H.K. 
Li, S.F.Y. 
Keywords: Capillary electrophoresis
Carbamates
Cyclodextrin derivatives
Micellar electrokinetic chromatography
Pesticides
Urea
Issue Date: 1998
Citation: Wu, Y.S.,Lee, H.K.,Li, S.F.Y. (1998). Separation and Determination of Pesticides by Capillary Electrophoresis. I. Rapid Separation of Fifteen N-methylcarbamate Insecticides via Micellar Electrokinetic Chromatography. Journal of Microcolumn Separations 10 (3) : 239-247. ScholarBank@NUS Repository.
Abstract: In this article, micellar electrokinetic chromatography (MEKC) separation of 15 N-methylcarbamate insecticides with a wide span of hydrophobicity was studied. Influences of various buffer parameters such as sodium dodecyl sulfate (SDS) concentration, ionic strength, and modifiers (urea, cyclodextrins) on separation selectivity and analysis time were investigated. Under the optimized running condition (40 mM phosphate with 60 mM SDS and 23 mM hydroxypropyl-β-cyclodextrin, pH 7, voltage 18 kV), satisfactory separation of all 15 analytes was achieved in less than 14 min. Using this new method, residues of carbaryl and its metabolite in a paddy water sample were successfully determined. This new alternative for the separation of N-methylcarbamates is superior to conventional reversed-phase high-performance liquid chromatography (HPLC) approaches in terms of speed of separation and flexibility of selectivity manipulation. © 1998 John Wiley & Sons, Inc.
Source Title: Journal of Microcolumn Separations
URI: http://scholarbank.nus.edu.sg/handle/10635/76948
ISSN: 10407685
Appears in Collections:Staff Publications

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