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  • Title: [Pesticide determination in water after separation on reverse-phase minicolumns].
    Author: Molto JC, Font G, Farre R, Mañes J.
    Journal: Rev Sanid Hig Publica (Madr); 1989; 63(7-8):31-7. PubMed ID: 2635371.
    Abstract:
    The lindane, methoxichlor, parathion and methylparathion content of water is measured in a gas-chromatography fitted with a capture electron detector. Prior extraction and concentration are done by using Sep-Pak C18 cartridges with ethyl acetate as eluent, which is offers certain advantages over hexane and methanol. With solutions of 0.5 ppb recovery values of 102.7% (lindane), 85% (methoxychlor), 94.7% (parathion) and 93.1% (methylparathion) are obtained. The method proposed is less time-consuming and less expensive than the usual consisting of extraction with dichloromethane: hexane (15:75 v/V) and concentration in a Kuderna-Danish.
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