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Interlaboratory Proficiency Test 15/2020 VOC compounds in water and soil

ISBN (nid):ISBN 978-952-11-5381-5  
Julkaisusarja ja numero:Reports of the Finnish Environment Institute 14/2021 
Kustantaja:Suomen ympäristökeskus 
Tekijät:Riitta Koivikko, Mirja Leivuori, Jari Nuutinen, Keijo Tervonen, Sari Lanteri, Ritva Väisänen, Helena Kutramoinen, Markku Ilmakunnas 

60.00 €

Proftest SYKE carried out the proficiency test (PT) for determination of volatile organic compounds from water and soil in November 2020. The provided samples in this PT included synthetic, surface water as well as soil samples. In total, there were 10 participants in the PT. Either the calculated concentration or the median of the reported results was used as the assigned value for the measurands. The performance of the participants was evaluated by using z and En scores. In this PT 82 % of the results evaluated with z scores were satisfactory when deviation of 15–35 % from the assigned value was accepted. Further, 80 % of the results evaluated with En scores were satisfactory. Warm thanks to all the participants in this proficiency test!