Proficiency testing pilot for determination of total mercury in fresh fish

8th Brazilian Congress on Metrology

De Santana, L.V.^1 ; Sarkis, J.E.S.^1 ; Ulrich, J.C.^1 ; Hortellani, M.A.^1

Institute of Energy and Nuclear Research-National (IPEN/CNEN-SP), Av. Professor Lineu Prestes 2242, São Paulo

SP

05508-000, Brazil^1

关键词: Analytical method;    Proficiency testing;    Proficiency testing program;    Proficiency testing schemes;    Proficiency tests;    Reference material;    Reference values;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012031/pdf
DOI  :  10.1088/1742-6596/733/1/012031

来源: IOP

【 摘 要 】

A proficiency-testing scheme concerning total mercury determination in fish tissue involved 10 laboratories as participants, who used their regular in-house analytical methods, and the assigned value and the standard deviation used in proficiency testing program was derived from calibration against the certified reference values of the CRMs. The majority of participants obtained satisfactory Z-scores, and laboratories that need to revise their procedures were singled out. The objective these exercises were makes a useful contribution towards the production of proficiency test in Brazil. The uncertainty expanded calculated for the reference material was 22%.