Second EC-JRC Aromatic Compounds Intercomparison with Automatic Analyzer
This report presents the results of the second intercomparison for BTEX automatic analysers carried out by the JRC on the 17-19 June 2008. Seven national reference laboratories participated in this exercise. Six concentrations levels were tested during the intercomparison, ranging from circa 3 to 50 µg/m3, for benzene. With respect to the first intercomparison carried out in 2005, the reference value was assigned by ERLAP and the exercise was evaluated according to ISO 13528 methodologies for the evaluation of interlaboratory proficiency assessment and the recommendation of the protocol N37 of the AQUILA network. Participating laboratories are identified as requested by the AQUILA for further actions.
In general, the results of the exercise show no changes in the performance of the method with respect to the previous exercise. The robustness of the method is still an issue in particular for benzene. This is reflected in a relatively high interlaboratory reproducibility standard deviation. As a consequence, the criterion for the standard deviation for proficiency assessment proposed in the AQUILA
protocol seems to be very restrictive for the current performance of the methodology, this may require future harmonisation actions in the implemented methodology.
PEREZ BALLESTA Pascual;
CONNOLLY Richard;
CAO Natale;
LAGLER Friedrich;
KAPUS DUKARIC Matej;
2009-04-07
OPOCE
JRC50545
978-92-79-12024-4,
1018-5593,
EUR 23792 EN,
OP LB-NA-23792-EN-C,
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