|Julkaisusarja ja numero:||Reports of the Finnish Environment Institute 3/2019|| |
|Tekijät:||Leivuori, Mirja; Hovi, Hanna; Koivikko, Riitta; Tervonen, Keijo; Lanteri, Sari; Ilmakunnas, Markku|| |
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 (IDA 09/2018) in October 2018. Further, the measurements of alpha-pinene, 1-butanol, 2-butoxyethanol, 2EH (2-ethyl-1-hexanol), naphthalene, styrene, tetrachloroethylene, toluene, 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 70 % of the results reported by the participants were satisfactory when deviation of 20–30 % 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 of the expert laboratory were used as the assigned value. The performance evaluation was based on the z scores.