Sixth EC-JRC aromatic compounds inter-laboratory comparison with automatic analysers
This report presents the results of the sixth inter-laboratory comparison for BTEX automatic analysers performed at the JRC Ispra from the 26th to the 29th of September 2022. Twelve national reference laboratories and fifteen instruments participated in this exercise. Six concentration levels were tested during the interlaboratory comparison. Benzene concentrations ranged from 1 to 20 µg/m3. The exercise was evaluated according to ISO 13528:2022 methodologies for the evaluation of inter-laboratory proficiency assessment and the recommendation of the protocol N37 of the AQUILA network. Participating laboratories were identified as requested by the afore-mentioned protocol. The robust average value calculated according to ISO 13528:2022 was adopted as reference value for the exercise. The report provides information on the technique and instrumentation used by each participant and shows the results of linearity tests, identification of outliers, repeatability, reproducibility, and robustness of the method. In general, the results showed in terms of accuracy and precision a behaviour similar to the previous interlaboratory exercise (EUR-28692-EN). For benzene and toluene, average repeatability and reproducibility values were about 6.5 ± 0.5 % and 15 ± 2 %, respectively. Ethyl-benzene, m,p-xylene and o-xylene showed higher repeatability values of around 9.7 ± 0.2 %, while their values of reproducibility were about 35 ± 3 %.
PEREZ BALLESTA Pascual;
BAU' Andrea;
BOROWIAK Annette;
2023-05-17
Publications Office of the European Union
JRC133471
978-92-68-03540-5 (online),
1831-9424 (online),
EUR 31516 EN,
OP KJ-NA-31-516-EN-N (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC133471,
10.2760/779182 (online),
Additional supporting files
| File name | Description | File type | |
|---|
