Interlaboratory Comparison 11/2020. VOC measurements from indoor air samples

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Title: Interlaboratory Comparison 11/2020. VOC measurements from indoor air samples
Author: Leivuori, Mirja; Hovi, Hanna; Koivikko, Riitta; Tervonen, Keijo; Lanteri, Sari; Ilmakunnas, Markku
Publisher: Finnish Environment Institute
Date: 2021
Language: en
Belongs to series: Reports of the Finnish Environment Institute 4/2021
ISBN: 978-952-11-5352-5
ISSN: 1796-1726
Abstract: Proftest SYKE carried out the interlaboratory comparison in cooperation with Finnish Institute of Occupational Health (FIOH) for VOC thermodesorption measurements (ISO 16000-6) from native indoor air samples in Tenax TA thermodesorption tubes in September-October 2020 (IAVOC 11/2020). Further, the measurements of alpha-pinene, 1-butanol, 2-butoxyethanol, decane, ethylbenzene, 2EH (2-ethyl-1-hexanol), naphthalene, styrene, tetrachloroethylene, toluene, 1,2,4-trimethylbenzene, and TXIB (2,2,4-trimethyl-1,3-pentanediol diisobutyrate were tested from the synthetic sample. In total eight participants took part in the comparison. In total 71 % of the results reported by the participants were satisfactory when deviation of 15–35 % from the assigned value was accepted. The calculated values were used as the assigned values for the results of the synthetic sample reported as compound specific responses. For the other measurands and samples the mean of the results of the homogeneity measurements and the test results of the expert laboratory was used as the assigned value. The performance evaluation was based on the z scores. Warm thanks to all the participants in this interlaboratory comparison!

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