Potential of microcolumn liquid chromatography and capillary electrophoresis with flame photometric detection for determination of polar phosphorus-containing pesticides |
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| Authors: | E W J Hooijschuur Ch E Kientz J Dijksman U A Th Brinkman |
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| Institution: | (1) Free University, Department of Analytical Chemistry and Applied Spectroscopy, De Boelelaan, 1083, 1081 HVAmsterdam, The Netherlands;(2) TNO Prins Maurits Laboratory, P.O. Box 45, 2280 AA Rijswijk, The Netherlands;(3) Pharma Bio-Research Group B.V., P.O. Box 200, 9470 AE Zuidlaren, The Netherlands |
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| Abstract: | Summary The potential of microcolumn liquid chromatography (μlC) and capillary electrophoresis (CE) with on-line, flame photometric
detection (FPD) in the P-selective mode has been studied for determination of polar P-containing pesticides, glyphosate and
its main metabolite, aminomethylphosphonic acid (AMPA), ethephon, fosetyl-aluminium and acephate. Acephate was determined
by reversed-phase μLLC-FPD using large-volume injections with peak compression, the other compounds were determined by μLC-FPD
and CE-FPD using simple, large-volume injection procedures to obtain limits of detection of 7.5-500 ng·mL−1 and 1.0 μ·mL−1, respectively. The methods showed acceptable repeatability and robustness and were successfully applied for rapid and selective
determination of pesticides in fruit, vegetable and water samples. |
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| Keywords: | Column liquid chromatography Microcolumns Capillary electrophoresis Flame photometric detection Phosphorus pesticides |
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