Separation and determination of pesticides by capillary electrophoresis. II. Determination of N-methylcarbamates in drinking water by micellar electrokinetic chromatography with SPE and on-column enrichment

✍ Scribed by Y. S. Wu; H. K. Lee; S. F. Y. Li

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 107 KB
• Volume: 10
• Category: Article
• ISSN: 1040-7685
• DOI: 10.1002/(sici)1520-667x(1998)10:6<529::aid-mcs8>3.0.co;2-i

✦ Synopsis

This article describes a new method for the determination of ultra trace levels of 12 N-methylcarbamates in drinking water via micellar electrokinetic Ž . chromatography MEKC . Two steps were employed to enhance the detection sensitivity. The sample was first preconcentrated by C bonded SPE cartridge and 18 then further enriched through on-column stacking. With this two-step enrichment procedure, the method permits separation and UV detection of N-methylcarbamates at the 0.1-ppb level. This new alternative for the determination of carbamates in drinking water is convenient and fast and consumes practically no organic solvent.