Final report on CCQM-K125: elements in infant formula

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DOIResolve DOI: http://doi.org/10.1088/0026-1394/54/1A/08013
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TypeArticle
Journal titleMetrologia
ISSN0026-1394
1681-7575
Volume54
IssueTechnical Supplement, 2017 1A
Article number08013
Pages# of pages: 60
AbstractCCQM-K125 was organized by the Inorganic Analysis Working Group (IAWG) of CCQM to assess and document the capabilities of the national metrology institutes (NMIs) or the designated institutes (DIs) to measure the mass fractions of trace elements (K, Cu and I) in infant formula. Government Laboratory, Hong Kong SAR (GLHK) acted as the coordinating laboratory. In CCQM-K125, 25 institutes submitted the results for potassium, 24 institutes submitted the results for copper and 8 institutes submitted the results for iodine. For examination of potassium and copper, most of the participants used microwave-assisted acid digestion methods for sample dissolution. A variety of instrumental techniques including inductively coupled plasma mass spectrometry (ICP-MS), isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS), inductively coupled plasma optical emission spectrometry (ICP-OES), atomic absorption spectrometry (AAS), flame atomic emission spectrometry (FAES) and microwave plasma atomic emission spectroscopy (MP-AES) were employed by the participants for determination. For analysis of iodine, most of the participants used alkaline extraction methods for sample preparation. ICP-MS and ID-ICP-MS were used by the participants for the determination. Generally, the participants' results of CCQM-K125 were found consistent for all measurands according to their equivalence statements. Except with some extreme values, most of the participants obtained the values of di/U(di) within ± 1 for the measurands.
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PublisherIOP Publishing
LanguageEnglish
Peer reviewedYes
NPARC number23001813
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Record identifierab858b77-0d52-4b6f-bca7-fe386ae1484c
Record created2017-04-10
Record modified2017-04-10
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