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  • Title: Evaluation of an automated gel permeation cleanup and evaporation systems for determining pesticide residues in fatty samples.
    Author: Hopper ML, Griffitt KR.
    Journal: J Assoc Off Anal Chem; 1987; 70(4):724-6. PubMed ID: 3624184.
    Abstract:
    The AutoVap 600 system, used in conjunction with an automated gel permeation chromatography (GPC) instrument, automatically collects and evaporates the effluent from the GPC column, dissolves the residue in a fixed volume of desired solvent, and quantitatively transfers it to a sealed vial. This system was evaluated and found to automate efficiently the cleanup of butterfat for pesticide residue analysis. Quantitative recoveries were obtained for each of 4 pesticides fortified in butterfat and cleaned up through the system and for 12 pesticide standards in the absence of sample matrix collected through the system. After loading, the system operates unattended and will automatically prepare up to 23 individual fat samples for determination by gas chromatography without additional cleanup.
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