Report of the CCQM-K97: measurement of arsenobetaine standard solution and arsenobetaine content in fish tissue (tunafish)

• Published in: Metrologia 2017-01, Vol.54 (1A), p.8003
• Main Authors: Ma, L D, Wang, J, WEI, C, Kuroiwa, T, Narukawa, T, Ito, N, HIOKI, A, CHIBA, K, Yim, Y H, Lee, K S, Lim, Y R, Turk, G C, Davis, C W, Mester, Z, Yang, L, McCooeye, M, Maxwell, P, Cankur, O, Tokman, N, Coskun, F G
• Format: Article
• Language: English
• ISSN: 0026-1394; 1681-7575
• DOI: 10.1088/0026-1394/54/1A/08003

The CCQM-K97 key comparison was organized by the inorganic analysis working group (IAWG) of CCQM as a follow-up to completed pilot study CCQM-P96 and P96.1 to test the abilities of the national metrology institutes to accurately quantitate the mass fraction of arsenobetaine (AsB) in standard solution and in fish tissue. A pilot study CCQM-P133 was parallelized with this key comparison. National Institute of Metrology (NIM), China and National Metrology Institute of Japan (NMIJ) acted as the coordinating laboratories. Six NMIs participated in CCQM-K97 and two institutes participated in CCQM-P133, and all of them submitted the results. Some NMIs submitted more than one results by different methods. The results were in excellent agreement with each other, and obviously better than those of previous P96 and P96.1. Therefore the calibrant which each NMI used was comparable. It shows that the capabilities of some of the participants have been improved after the previous pilot studies. Main text 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).