Hivatkozási szám

MSZ EN 15741:2020

Dokumentumazonosító

175339

Cím

Takarmány. Mintavételi és elemzési módszerek. Az OCP-k és a PCB-k meghatározása GC/MS-sel

Angol cím

Animal feeding stuffs: Methods of sampling and analysis. Determination of OCPs and PCBs by GC/MS

Alkalmazási terület

This document specifies a gas chromatographic mass spectrometric (GC-MS) method for the determination of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in compound feeds and feed materials (oils and fats, fish meal). The method is applicable to compound feeds consisting of less than 20 % water by mass and oil/fatty samples containing residues of one or more of the following OCPs and PCBs 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 o,p'-DDT, p,p'-DDT, p,p'-TDE (p,p'-DDD), and p,p'-DDE; — endosulfan, as the sum of alpha-/béta-isomers and endosulfan-sulphate; — endrin, as the sum of endrin and delta-keto-endrin; — heptachlor, as the sum of heptachlor and heptachlor epoxide; — hexachlorobenzene (HCB); — hexachlorocyclohexane isomers alpha-HCH (alpha-BHC), béta-HCH (béta-BHC), gamma-HCH (gamma-BHC or lindane); — photo heptachlor; — cis- and trans-nonachlor; — non dioxin-like PCBs (ndl-PCBs), as the sum of PCB 28, 52, 101, 138, 153 and 180. The method has been fully validated by a collaborative trial for the substances and corresponding ranges (microgramm/kg) noted in Table 1. Table 1 — Residue compound and range of (microgramm/kg) collaborative trial Táblázat The method has not been fully validated for oxychlordane, endrin ketone, cis- and trans-nonachlor and photo heptachlor in all matrices. For those matrix-analyte combinations where the validation data were regarded insufficient, the results obtained with this method can only be regarded as screening results, unless the laboratory performs an in-house validation to show that satisfactory results can be obtained. The method is not applicable to chlorocamphene (toxaphene), a complex mixture of polychlorinated camphenes. Chlorocamphene has a very distinctive chromatographic profile and is easily recognizable by GC/ECD. Positive identification of the toxaphene isomers can be performed by negative chemical ionization mass spectrometry (NCI-MS), electron impact tandem mass spectrometry (EI MS × MS) or electron impact high resolution mass spectrometry (EI-HRMS), which is not within the scope of this method. A limit of quantification (LOQ) for the mentioned organochlorine pesticides of 6 to 29 microgramm/kg should normally be obtained (see Table 1). For the ndl-PCBs an LOQ of 0,5 to 1,0 microgramm/kg should be obtained. The LOQs mentioned apply to the individual compounds (i.e. not the sum of two or more compounds). Individual laboratories are responsible for ensuring that the equipment that they used will achieve these LOQs. On customers' demand the standard may be applied to solely the analysis of PCBs or OCPs.

ICS

65.120 Takarmányok

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2020-08-01

Forrás

idt EN 15741:2020

Előd

MSZ EN 15741:2009

Utód

Módosítás

Kiegészítő információk

SZK-közlemények

Kapcsolódó európai jogszabály

882/2004/EK a takarmány- és élelmiszerjog, valamint az állat-egészségügyi és az állatok kíméletére vonatkozó szabályok követelményeinek történő megfelelés ellenőrzésének biztosítása céljából végrehajtott hatósági ellenőrzésekről (FEE3)

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