Abstract
Deltamethrin among pyrethroids is used as an insecticide on different vegetables. Grass of sprayed field was provided to the domestic animals as a food. In order to determine deltamethrin quantitatively, animal samples like milk, blood and urine were extracted with n-hexane, partitioned and anhydrous Na2SO4 was added to the acetonitrile layer to remove the water contents. Silica gel column was used to cleanup deltamethrin with n-hexane and diethyl ether as a mobile phase. The column fractions were concentrated to 5 ml using rotary evaporator and analyzed using Gas Chromatography with Flame Ionization Detector (GC-FID).Deltamethrin solutions with concentrations ranging from 0.5-to 2.5-µg/ ml were used as calibration standards. The solution at 1.0µg/ml is used to confirm the claimed limit of detection (LOD).
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