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Commission Directive 2005/10/EC of 4 February 2005 laying down the sampling methods and the methods of analysis for the official control of the levels of benzo(a)pyrene in foodstuffs (Text with EEA relevance) (repealed)
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Where no specific methods for the determination of benzo(a)pyrene in food are prescribed at Community level, laboratories may select any validated method provided the selected method meets the performance criteria indicated in the Table. The validation should ideally include a certified reference material.
Performance criteria for methods of analysis for benzo(a)pyrene
Parameter | Value/comment |
---|---|
Applicability | Food specified in Regulation (EC) No …/2005 |
Detection limit | No more than 0,3 μg/kg |
Limit of quantification | No more than 0,9 μg/kg |
Precision | HORRATr or HORRATR values of less than 1.5 in the validation collaborative trial |
Recovery | 50 %-120 % |
Specificity | Free from matrix or spectral interferences, verification of positive detection |
However, an uncertainty approach may also be used to assess the suitability of the method of analysis to be used by the laboratory. The laboratory may use a method which will produce results within a maximum standard uncertainty. The maximum standard uncertainty can be calculated using the following formula:
where:
is the maximum standard uncertainty
is the limit of detection of the method
is the concentration of interest
If an analytical method provides results with uncertainty measurements less than the maximum standard uncertainty the method will be equally suitable to one which meets the performance characteristics given in the Table.
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