Gas chromatographic determination of deltamethrin in biological samples.

A gas chromatographic method is described for the detection and estimation of deltamethrin in spiked samples of urine, feces, milk, liver, kidney, muscle and subcutaneous fat. It involved extraction with acetone, with the exception of milk and urine samples, liquid-liquid partition with acetonitrile, followed by clean-up on a micro-column using benzene-hexane (1:1) solvent system. Milk and urine samples were extracted with hexane followed by liquid-liquid partition with acetonitrile. Under the gas chromatographic conditions employed, deltamethrin eluted in less than 4 min.