TY - JOUR A1 - Hioki, A. A1 - Nonose, N. A1 - Liandi, M. A1 - Jingbo, C. A1 - Liuxing, F. A1 - Chao, W. A1 - Cho, K.H. A1 - Suh, J.K. A1 - Min, H.S. A1 - Lim, Y. A1 - Recknagel, Sebastian A1 - Koenig, Maren A1 - Vogl, Jochen A1 - De Sena, R.C. A1 - Dos Reis, L.A. A1 - Borinsky, M. A1 - Puelles, M. A1 - Hatamleh, N. A1 - Acosta, O. A1 - Turk, G. A1 - Rabb, S. A1 - Sturgeon, R. A1 - Methven, B. A1 - Rienitz, O. A1 - Jaehrling, R. A1 - Konopelko, L.A. A1 - Kustikov, Y.A. A1 - Kozyreva, S.B. A1 - Korzh, A.A. T1 - Final report of the key coamparison CCQM-K88: Determination of lead in lead-free solder containing silver and copper N2 - The CCQM-K88 key comparison was organized by the Inorganic Analysis Working Group of CCQM to test the abilities of the national metrology institutes to measure the mass fraction of lead in lead-free solder containing silver and copper. National Metrology Institute of Japan (NMIJ), National Institute of Metrology of China (NIM) and Korea Research Institute of Standards and Science (KRISS) acted as the coordinating laboratories. The participants used different measurement methods, though most of them used inductively coupled plasma optical emission spectrometry (ICP-OES) or isotope-dilution inductively coupled plasma mass spectrometry (ID-ICP-MS). Accounting for relative expanded uncertainty, comparability of measurement results was successfully demonstrated by the participating NMIs for the measurement of the mass fraction of lead in lead-free solder at the level of 200 mg/kg. It is expected that metals at mass fractions greater than approximately 100 mg/kg in lead-free solder containing silver and copper can be determined by each participant using the same technique(s) employed for this key comparison to achieve similar uncertainties mentioned in the present report. KW - CCQM KW - Metrology KW - IDMS PY - 2013 U6 - https://doi.org/10.1088/0026-1394/50/1A/08002 SN - 0026-1394 SN - 1681-7575 VL - 50 IS - 08002, 1A (Technical Supplement 2013) SP - 1 EP - 19 PB - Inst. of Physics Publ. CY - Bristol AN - OPUS4-30457 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -