Homogeneity testing of a lot of silicon metal prepared as a reference material

Química Nova

Iamashita, Celia Omine¹  Universidade São Francisco, Itatiba¹  Chui, Queenie Siu Hang¹  Instituto de Pesquisas Tecnológicas do Estado de São Paulo¹  Bispo, João Marcos de Almeida¹ 

关键词: uncertainty;    homogeneity test;    reference material.;   

DOI  :  10.1590/S0100-40422005000300023

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

From the perspective of the uncertainties in chemical measurements all uncertainty sources should be part of the uncertainty of the reference material. When the primary methods are not available, interlaboratorial comparisons are used as a means of certification. The material to be distributed to the laboratories should have its homogeneity confirmed. The uncertainty due to this factor will be added to the characterization uncertainty. This work presents a homogeneity study of a lot of silicon metal of chemical degree where the uncertainty due to inhomogeneity is obtained using analysis of variance.

【 授权许可】

Unknown