DIN EN 12393-1:2009-02

This European Standard gives general considerations for the determination of pesticide residues in non-fatty foods.Each method described in this European 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.This European Standard 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 gelchromatography;- method O: Extraction with ethylacetate and, if necessary, clean-up with gel permeation chromatography.The applicability of the four methods L to O for residue analysis of organohalogen, organophosphorus and organonitrogen pesticides, respectively, is given for each method.