Report on the 9th inter-laboratory comparison organised by the European Union Reference Laboratory for Polycyclic Aromatic Hydrocarbons - Four marker PAHs in spiked olive oil
The proficiency test here reported concerned the determination of the four marker polycyclic aromatic hydrocarbons (PAHs) in an olive oil test sample: benz[a]anthacene, benzo[a]pyrene, benzo[b]fluoranthene, and chrysene. Participants to these PT were National Reference Laboratories for PAHs (NRLs-PAHs) and EU official food control laboratories. The number of participants was 50. The PT was organised according to ISO Standard 17043:2010.
The test material used was olive oil spiked with the target PAHs. Participants also received a solution of the PAHs either in an organic solvent for checking their instrument calibration. The results from participants were rated with z-scores and zeta-scores. About 96 % and 88 % of the results reported by NRLs and OCLs respectively were attributed with z-scores with an absolute value of below two, which is the threshold for satisfactory performance. The zeta-score ratings were worse, which indicates problems in the estimation of reliable measurement uncertainty values.
LERDA Donata;
VERLINDE Philippe;
WENZL Thomas;
2012-07-23
Publications Office of the European Union
JRC70138
978-92-79-24170-3,
1831-9424,
EUR 25300 EN,
OP LA-NA-25300-EN-N,
https://publications.jrc.ec.europa.eu/repository/handle/JRC70138,
10.2787/60370,
Additional supporting files
| File name | Description | File type | |
|---|
