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T1  - Proficiency Test SYKE 9/2012. Oil hydrocarbons in water and soil 
SN  - 978-952-11-4142-3 / 1796-1726 
UR  - http://hdl.handle.net/10138/38619 
T3  - Reports of the Finnish Environment Institute 8/2013 
A1  - Korhonen-Ylönen, Kaija; Nuutinen, Jari; Leivuori, Mirja; Ilmakunnas, Markku 
A2  -  
PB  - Suomen ympäristökeskus 
Y1  - 2013 
LA  - en 
AB  - 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 profic... 
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KW  - pätevyyskoe; laboratoriot; laboratoriotutkimus; pätevyys; luotettavuus; öljy; hiilivedyt 
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