|ISBN (pdf):||978-952-11-4125-6|| |
|Julkaisusarja ja numero:||Reports of the Finnish Environment Institute 1/2013|| |
|Kustantaja:||Finnish Environment Institute|| |
|Saatavuus (pdf):||http://hdl.handle.net/10138/41753|| |
|Tekijät:||Mirja Leivuori; Kaija Korhonen-Ylönen; Timo Sara-Aho; Teemu Näykki; Keijo Tervonen; Sari Lanteri; Markku Ilmakunnas
Proftest SYKE carried out the proficiency test for analysis of metals in waters and soil in June–August 2012. The measured analytes were: Al, As, Ba, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, Sr, U, V and Zn. In total 45 laboratories participated in the proficiency test. The sample types were: artificial and natural water, municipal and industrial waste water and soil. Basically, the metrologically traceable concentration, calculated concentrations or the robust mean of the results reported by the participant were used as the assigned values for measurements. The evaluation of the performance of the participants was carried out using z score. In some cases the evaluation of the performance was not possible e.g. due to the low number of the participants. In total, 89 % of the total data in this proficiency test were satisfactory when the deviations of 10-35 % from the assigned values were accepted.