Abstract
Abstract A method is described for the extraction and analysis of deltamethrin in wool after pour-on or plunge dipping application. Acetonitrile was used for extraction followed by simple clean-up on Florisil or C18 cartridges. Deltamethrin levels were determined by liquid scintillation spectrometry of [14C]-deltamethrin and high performance liquid chromatography at 217–222 nm. Results showed good recovery and correlation between the two methods. This extraction procedure is relatively simple and rapid, it eliminates the need for prolonged liquid-liquid extraction and solid-phase steps thus making it more suitable for pharmacokinetic studies.
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