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  • Title: On-column partition cleanup of fatty extracts for organophosphate pesticide residue determination.
    Author: Di Muccio A, Cicero AM, Camoni I, Pontecorvo D, Dommarco R.
    Journal: J Assoc Off Anal Chem; 1987; 70(1):106-8. PubMed ID: 3558258.
    Abstract:
    A fast, single-step, and efficient partition between n-hexane and acetonitrile on ready-to-use, disposable mini-columns of Kieselghur-type material has been developed for the cleanup of fatty extracts for organophosphate (OP) pesticide residue determination by gas chromatography with flame photometric detection. Nine OP pesticides (diazinon, etrimfos, chlorpyrifos-methyl, pyrimiphos-methyl, chlorpyrifos, bromophos, bromophos-ethyl, malathion, fenitrothion) most commonly used for protection of stored cereals, oil seeds, and legumes were separated from up to 2.0 g lipidic material with recoveries between 80 and 107% at spiking levels ranging for the different compounds from 0.1 to 5.0 ppm.
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