DANSK DSF/FPREN 15742 PDF

This document specifies a gas chromatographic method with electron capture detection (ECD) for the determination of organochlorine pesticides (OCP’s) in animal feeding stuffs. The method is applicable to animal feeding stuffs with a water content up to about 20 % by weight and oil/fatty samples containing residues of one or more of the following OCP’s, toxaphene and some of their isomers and degradation products:
— aldrin;
— dieldrin;
— chlordane (as the sum of chlordane isomers and oxychlordane);
— dichlorodiphenyltrichloroethane (DDT) (as the sum of isomers op'-DDT, pp'-DDT, pp'-TDE (pp'-DDD), and pp'-DDE);
— endosulfan (as the sum of α-/β-isomers and endosulfan-sulphate);
— endrin (sum of endrin and delta-keto-endrin);
— heptachlor (as the sum of heptachlor and heptachlor epoxide);
— hexachlorobenzene (HCB);
— hexachlorocyclohexane isomers α-HCH (α-BHC), β-HCH (β-BHC), γ-HCH (γ-BHC or lindane);
— photo heptachlor;
— cis- and trans-nonachlor; A limit of quantification (LOQ) for the mentioned OCPs of 5 ng/g should normally be obtained. However, 10 ng/g applies for heptachlor, aldrin, endrin, dieldrin, and endosulfan (α-/β-- and sulphate). Individual laboratories are responsible for ensuring that the equipment that they use, achieves these limits of quantifications. The LOQs apply to the individual OCPs.