The proficiency test here reported concerned the determination of the contents of four marker polycyclic aromatic hydrocarbons (PAHs), and of their sum in an food supplements test sample. The set of marker PAHs consists of 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 in total 48.
The PT was organised according ISO Standard 17043:2010.
The test material used was a commercial dry extract of St. John's wort. Participants also received a solution of the same PAHs either in acetonitrile or in toluene for checking their instrument calibration.
The results from participants were rated with z-scores and zeta-scores. About 68 % of the reported results were attributed with z-scores with an absolute value of below two, which is the threshold for satisfactory performance.
LIZAK Radoslaw;
SZILAGYI Szilard;
VERLINDE Philippe;
WENZL Thomas;
2012-05-08
Publications Office of the European Union
JRC69083
978-92-79-23337-1,
1831-9424,
EUR 25245 EN,
OP LA-NA-25245-EN-N,
https://publications.jrc.ec.europa.eu/repository/handle/JRC69083,
10.2787/59387,
| Name | Country | City | Type |
|---|
This document is only visible at the Commission level.
You are not authorized to publish or distribute it outside the European Commission.
This is a public document. You can share this publication.
Datasets
| ID | Title | Public URL |
|---|
Dataset collections
| ID | Acronym | Title | Public URL |
|---|
Scripts / source codes
| Description | Public URL |
|---|
Additional supporting files
| File name | Description | File type |
|---|