Abstract
A column switching system for the determination of some polar pesticides and their main metabolites, such as aldicarb, aldicarb sulphoxide, aldicarb sulphone, carbofuran and 3-hydroxicarbofuran, in human urine has been developed. The limits of detection were between 0.3 and 1 μg/l. We used a simple solid-phase extraction with graphite carbon and a RPLC–LC analysis with UV detection yielding average recoveries between 84 and 110% ( N=5) with RSD between 4 and 8%.
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