Abstract
A method was proposed for the gas-liquid chromatographic determination of aldrin in insecticidal dusts. The aldrin was extracted with acetone from sample and was analysed adding dibutyl phthalate as an internal standard in a gas chromatograph with thermal conductivity detection, using helium as the carrier gas, the flow rate of which was maintained at 70 ml per minute. The used column contained 20 weight % silicone high vacuum grease as a stationary phase on a support of Celite 545 and the column temperature was maintained at 225°C. The relative retention volume of aldrin against dibutyl phthalate was 1.33. The standard deviation and the average recovery of the proposed method were respectively 0.04 and 96.8% in a prepared dust (containing 3.8% aldrin).
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