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BS EN 16619:2015

$167.15

Food analysis. Determination of benzo[a]pyrene, benz[a]anthracene, chrysene and benzo[b]fluoranthene in foodstuffs by gas chromatography mass spectrometry (GC-MS)

Published By Publication Date Number of Pages
BSI 2015 42
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This European Standard specifies a method for the determination of 4 of the 16 EU priority polycyclic aromatic hydrocarbons (PAHs), identified as target PAHs. They are benz[ a]anthracene (BaA), benzo[ a]pyrene (BaP), benzo[ b]fluoranthene (BbF) and chrysene (CHR). The method allows their quantification in the presence of the other 12 EU priority PAHs (benzo[ j]fluoranthene (BjF), cyclopenta[ cd]pyrene (CPP), benzo[ k]fluoranthene (BkF), dibenz[ a,h]anthracene (DhA), benzo[ c]fluorene (BcL), dibenzo[ a,e]pyrene (DeP), benzo[ ghi]perylene (BgP), dibenzo[ a,h]pyrene (DhP), dibenzo[ a,i]pyrene (DiP), dibenzo[ a,l]pyrene (DlP), indeno[1,2,3- cd]pyrene (IcP), 5-methylchrysene (5MC)) in extruded wheat flour, smoked fish, dry infant formula, sausage meat, freeze-dried mussels, edible oil and wheat flour, by gas-chromatography mass-spectrometry (GC-MS). The extraction of PAHs from solid samples is performed by pressurized liquid extraction (PLE). Soxhlet extraction was applied by some participants in the method validation study by collaborative trial as alternative to PLE. The sample cleanup is performed by applying the following techniques in the reported sequence: size exclusion chromatography (SEC), and solid phase extraction (SPE).

This method complies with the performance characteristics specified in Commission Regulation (EU) No 836/2011 (see [1]). In particular the specifications for the limit of detection (LOD) and of the limit of quantification (LOQ) (0,30 Āµg/kg and 0,90 Āµg/kg respectively) were met.

The method has been validated in an interlaboratory study via the analysis of both naturally contaminated and spiked samples, ranging from 0,5 Āµg/kg to 11,9 Āµg/kg. However, linearity of the instrument response was proven for the concentration range 0,5 Āµg/kg to 20 Āµg/kg.

For the determination of PAHs in edible fats and oils, two other standards are also available, EN ISO 22959 and EN ISO 15753 , for more information see [2] and [3].

PDF Catalog

PDF Pages PDF Title
4 Contents Page
5 Foreword
6 1 Scope
2 Normative references
3 Principle
7 4 Reagents
9 Table 1 ā€” Names and structures of the native PAHs
10 Table 2 ā€” Names and structures of 13C labelled PAHs
Table 3 ā€” Correspondence stable isotope labelled PAHs and native PAHs
Table 4 ā€” Name and structure of the injection standard
11 5 Standard preparation
5.1 General
5.2 Injection standard solution
5.3 PAH stock solutions
5.4 Mixed PAH stock solutions
12 5.5 Labelled PAH stock solution
5.6 Process solution
5.7 Intermediate solutions
13 Table 5 ā€” Nominal volumes of the mixed PAH stock solution (5.4) to be pipetted in order to prepare 100 ml of each of the listed concentration levels of the intermediate solutions
5.8 Calibration solutions
Table 6 ā€” Indicative compositions of the PAH calibration solutions
14 5.9 Standard solution for assessment of chromatographic selectivity
6 Apparatus
17 7 Procedure
7.1 Sample treatment
7.2 Test portion preparation
7.3 Sample extraction by PLE and preparation for SEC
18 7.4 Soxhlet extract as alternative to PLE
7.5 SEC cleanup
19 7.6 Concentration step after SEC cleanup
7.7 Sample preparation for SPE cleanup
7.8 SPE cleanup
7.9 Preparation of the sample for GC-MS analysis
8 GC-MS analysis
8.1 GC-MS operating conditions
8.1.1 General
20 8.1.2 Injection conditions, for PTV injector
8.1.3 Injection conditions, for split-splitless injector
8.1.4 Oven conditions
8.1.5 Column conditions
21 8.1.6 Transfer line conditions
8.1.7 Mass spectrometer conditions
8.1.8 Mass spectrometer acquisition parameters and peak identification
Table 7 ā€” Acquisition programme in SIM
22 Table 8 ā€” Indicative retention times and ions for identification and quantification of the 4 target PAHs in SIM
8.2 Calibration graph
23 8.3 Sample analysis
24 9 Calculation and reporting
9.1 Calculation
9.2 Reporting
10 Quality control
10.1 General
25 10.2 Recovery
26 10.3 Chromatographic resolution
10.4 Reference material for method performance check
10.5 Procedural blank
10.6 Integrity check of the standards
11 Precision data
11.1 General
27 11.2 Repeatability
28 11.3 Reproducibility
The values for benzo[a]pyrene are:
29 12 Test report
30 Annex A (informative) Typical chromatograms
Figure A.1 ā€” Typical GC-MS chromatogram of 15+1 EU PAHs and stable isotope labelled PAHs obtained under the conditions described in Clause 8 and applying PTV injection
Figure A.2 ā€” Extracts from chromatograms of PAH standard solutions in toluene
31 Table A.1 ā€” Identification of chromatographic peaks
32 Annex B (informative) Precision data
33 ā€‹Table B.1 ā€” Statistical evaluation of interlaboratory study results for benz[a]anthracene in different food
34 Table B.2 ā€” Statistical evaluation of interlaboratory study results for benzo[a]pyrene in different food
35 Table B.3 ā€” Statistical evaluation of interlaboratory study results for benzo[b]fluoranthene in different food
36 Table B.4 ā€” Statistical evaluation of interlaboratory study results for chrysene in different food
37 Annex C (informative) Precision data from single laboratory validation
Table C.1 ā€” Results from single laboratory validation for BaA and BaP
38 Table C.2 ā€” Results from single laboratory validation for BbF and CHR
39 Bibliography
BS EN 16619:2015
$167.15