Sensitive analyses of agricultural chemicals by capillary electrochromatography

Jason A. Starkey, Shirley Abrantes, Yehia Mechref, Milos V. Novotny

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Abstract

Capillary electrochromatography using a monolithic matrix was employed to develop a rapid and highly efficient separation methodology for the analyses of mixtures of agrochemical importance. Using this method, ppm-ppb detection limits for urea, carbamate, and phenoxy acid herbicides were achieved without a preconcentration technique. The detection limits were further decreased to low-ppb levels for the same class of compounds using an on-column preconcentration technique.

Original languageEnglish
Pages (from-to)1635-1642
Number of pages8
JournalJournal of Separation Science
Volume26
Issue number18
DOIs
StatePublished - Dec 1 2003

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Keywords

  • Capillary electrochromatography
  • Herbicides and pesticides
  • Monolithic columns
  • Photodiode array detection

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