| Abstract: | A simple small-scale method for the determination of fenvalerate residues on cattle hair by gas–liquid chromatography with electron capture detection was developed and applied to the determination of fenvalerate residues from BovaidR ear tags. Recoveries were found to be 96–104% at 10–100 μg g?1 levels of fenvalerate. The minimum detection limit of this method was 1 pg g?1. With one ear tag, fenvalerate was adequately distributed over the entire body and persisted for at least 80 days on the hair of cattle. |
