Podrobnosti návrhu

Číslo:prEN 16215
Zdroj:CEN
Komise:CEN/TC 327
Název komise:Animal feeding stuffs: Methods of sampling and analysis
Návrh uveřejněn:25.09.2018
K připomínkám do:13.11.2018
Oblast zaměření:Potravinářské produkty
Contact email:cermak(at)agentura-cas.cz
Anotace:

This document is applicable to the determination of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), (together termed ‘dioxins’ (PCDD/Fs)) and dioxin-like PCBs and non-dioxin-like PCBs (dl-PCBs and ndl-PCBs) in animal feeding stuffs. Collaborative studies have been carried out. The method is suitable for the determination of dioxins, dl-PCBs and ndl-PCBs at the appropriate MRL in compound feed and ingredients e.g. oil, mineral clay. The method is applicable to samples containing trace level amounts of one or more dioxins, dioxin-like PCBs and non-dioxin-likePCBs. The limit of quantification (LOQ) is

—    0,05 pg/g (OCDD/F = 0,1 pg/g) for the relevant individual congeners of dioxins/furans,

—    0,05 pg/g for non-ortho PCBs,

—    10 pg/g for mono-ortho PCBs, and

—    100 pg/g for non-dioxin-like-PCBs.

For determination of dioxins and dioxin-like PCBs, the procedure can be used as confirmatory method as defined by Commission Regulation (EC) No 152/2009 for dioxins and dl-PCB in feed [1]. Confirmatory methods as described in this standard are high-resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) methods. If only the analysis of non-dioxin-like PCBs is required, a GC-LRMS method can be used (e.g. EN 15741 [2]) provided that appropriate analytical performance criteria are met in the relevant range for the matrix of interest.

This document is split into four modules. Each module describes a part of the whole procedure (see Figure 1 and Figure 2) to be followed:

a)     Module A: Description of standards which might be used;

b)    Module B: Description of extraction procedures;

c)     Module C:  Description of clean-up procedures;

d)    Module D:                 GC/HRMS determination.

Each module describes a part of the whole method as well as, when applicable, alternatives which should be equivalent. Each module has to be regarded as an example. Combining modules and/or alternatives gives a highly flexible, "performance based" procedure. It is permitted to modify the method if all performance criteria laid down in Commission Regulation (EC) No 152/2009 [1] are met.

Any deviation of the described method, combination of modules needs to be recorded as part of the QA/QC procedures of accredited laboratories and should be available on request.

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