SIM.QM-S10 was performed to assess the analytical capabilities of National Metrology Institutes (NMIs) and Designated Institutes (DIs) of SIM members (or other regions) for the accurate determination of trace metals in skim milk powder. The study was proposed by the coordinating laboratories National Research Council Canada (NRC) and INTI Argentina as an activity of Sistema Interamericano de Metrologa (SIM) approved by the Inorganic Analysis Working Group (IAWG) of Consultative Committee for Amount of Substance - Metrology in Chemistry and Biology (CCQM). Participants included NMIs/DIs from twelve countries. No measurement method was prescribed by the coordinating laboratories. Therefore, NMIs used measurement methods of their choice. However, the majority of NMIs/DIs used closed vessel microwave system using a mixture of HNO₃ and H₂O₂ for the digestion and ICP-MS and ICP-OES for the determination of the measurands. One laboratory used INAA technique.

This SIM.QM-S10 Supplementary Comparison provides NMIs/DIs with the needed evidence for CMC claims for trace elements in skim milk powder and similar matrices.

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.

The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

使用SIM.QM-S10来评估SIM成员（或其他地区）的国家计量学会（NMI）和指定研究所（DI）的分析能力，以便准确测定脱脂奶粉中的痕量金属。这项研究是由加拿大国家研究委员会（NRC）和阿根廷INTI协调实验室提出的，是一项Sistema Interamericano de Metrologa（SIM）的活动，该活动已得到物质量计量委员会化学计量咨询委员会的无机分析工作组（IAWG）的批准和生物学（CCQM）。参加者包括来自十二个国家的NMI / DI。协调实验室未规定测量方法。因此，NMI使用了自己选择的测量方法。但是，大多数NMI / DI都使用混合了HNO的密闭容器微波系统₃和H ₂ O ₂用于消解，ICP-MS和ICP-OES用于测定被测物。一个实验室使用了INAA技术。

此SIM.QM-S10补充比较为NMI / DI提供了CMC声称的脱脂奶粉和类似基质中的痕量元素所需的证据。

要获得本文的正文，请单击“最终报告”。请注意，此文本显示在BIPM密钥比较数据库kcdb.bipm.org/的附录B中。

根据CIPM相互认可安排（CIPM MRA）的规定，最终报告已由CCQM进行同行评审并批准发布。