Interlaboratory Proficiency Test 09/2015 - PCB compounds in soil

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dc.contributor.author Koivikko, Riitta
dc.contributor.author Nuutinen, Jari
dc.contributor.author Ilmakunnas, Markku
dc.date.accessioned 2016-03-17T08:26:49Z
dc.date.available 2016-03-17T08:26:49Z
dc.date.issued 2016
dc.identifier.isbn 978-952-11-4561-2
dc.identifier.issn 1796-1726
dc.identifier.uri http://hdl.handle.net/10138/160804
dc.description.abstract Proftest SYKE carried out the proficiency test (PT) for analysis of PCB compounds in soil in November-December 2015 (PCB 09/2015). Two types of samples were delivered to the participants, synthetic and soil samples. In total, 8 laboratories participated in the PT. The evaluation of the performance was based on the z scores, which were calculated using the standard deviation for proficiency assessment at 95 % confidence level. In this proficiency test 79 % of the data was regarded to be satisfactory when the standard deviation of 20 to 30 % from the assigned value was accepted. For the synthetic sample the calculated concentration and for the soil sample the mean of the results reported by the participants was chosen to be the assigned value. The uncertainty for the assigned value was estimated at the 95 % confidence interval and for calculated assigned values it was 0.5–1.2 %, for assigned values based on the mean it varied from 6.8 to 21.3 %. fi
dc.language.iso en fi
dc.publisher Finnish Environment Institute fi
dc.relation.ispartofseries Reports of the Finnish Environment Institute 12/2016 fi
dc.subject pätevyyskoe
dc.title Interlaboratory Proficiency Test 09/2015 - PCB compounds in soil fi
dc.type Kirja fi
dc.identifier.laitoskoodi Suomen ympäristökeskus fi
dc.subject.ysa laboratoriot
dc.subject.ysa laboratoriotutkimus
dc.subject.ysa pätevyys
dc.subject.ysa luotettavuus
dc.subject.ysa maa-analyysi

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