Proficiency Test SYKE 9/2012. Oil hydrocarbons in water and soil

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http://hdl.handle.net/10138/38619

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Title: Proficiency Test SYKE 9/2012. Oil hydrocarbons in water and soil
Author: Korhonen-Ylönen, Kaija; Nuutinen, Jari; Leivuori, Mirja; Ilmakunnas, Markku
Publisher: Suomen ympäristökeskus
Date: 2013-03-26
Language: en
Belongs to series: Reports of the Finnish Environment Institute 8/2013
ISBN: 978-952-11-4142-3
ISSN: 1796-1726
URI: http://hdl.handle.net/10138/38619
Abstract: Proftest SYKE carried out the proficiency test for analysis of oil hydrocarbons from water and soil in October 2012. One artificial sample and one surface water sample and one soil sample for the determination of oil hydrocarbons were distributed. In total, 18 laboratories participated in the PT. Either the calculated concentration or the robust mean value was chosen to be the assigned value for the measurement. The performance of the participants was evaluated by using z scores. In this proficiency test 81 % of the results were satisfactory when the deviation of 20–40 % from the assigned value was accepted.
Subject: pätevyyskoe
Subject (ysa): laboratoriot
laboratoriotutkimus
pätevyys
luotettavuus
öljy
hiilivedyt


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