Estimation of uncertainty of a reference material for proficiency testing for the determination of total mercury in fish in nature

7th Brazilian Congress on Metrology

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

IPEN/CNEN, Institute of Nuclear and Energy Research, São Paulo, Brazil^1

关键词: Muscle tissues;    Proficiency testing;    Proficiency tests;    Reference material;    Short term;    Stability study;    Total mercuries;    Uncertainty estimates;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/575/1/012041/pdf
DOI  :  10.1088/1742-6596/575/1/012041

来源: IOP

【 摘 要 】

We provide an uncertainty estimates for homogeneity and stability studies of reference material used in proficiency test for determination of total mercury in fish fresh muscle tissue. Stability was estimated by linear regression and homogeneity by ANOVA. The results indicate that the reference material is both homogeneous and chemically stable over the short term. Total mercury concentration of the muscle tissue, with expanded uncertainty, was 0.294 ± 0.089 μg g-1.