scope:

Gives general considerations for the determination of pesticide residues in non-fatty foods. Each method described in this standard is suitable for identifying and quantifying a definite range of those organohalogen, and/or organophosphorus and/or organonitrogen pesticides which occur as residues in foodstuffs of plant origin. Contains the following methods that have been subjected to interlaboratory studies and/or are adopted throughout Europe: - method L: Extraction with acetone, liquid-liquid partition with dichloromethane and clean-up on a silica-gel/charcoal column; - method M: Extraction with acetone and liquid-liquid partition with dichloromethane/light petroleum, if necessary clean-up on Florisil; - method N: Extraction with acetone, liquid-liquid partition with dichloromethane and clean-up with gel permeation and silica gel chromatography; - method O: Extraction with acetonitrile, liquid-liquid partition with light petroleum and clean-up on a Florisil column; - method P: Extraction of organophosphorus compounds with ethyl acetate and, if necessary, clean-up with gel permeation chromatography. The applicability of the five methods L to P for residue analysis of organohalogen, organophosphorus and organonitrogen pesticides, respectively, is given for each method.