Certified reference materials for the determination of the composition of zinc and zinc alloys by emission spectrometryFunded under: FP2-BCR 4
The composition of zinc and zinc alloys is routinely determined by emission spectrometry, a technique which requires series of standards to construct the calibration curves. The BCR has certified 17 reference materials for this purpose : seven grades of unalloyed zinc (CRM 321-327), five grades of ZnAl(4) (CRM 351-355) and six grades of ZnAl(4)Cu(l) (CRM 356-361). The preparation of the materials and their homogeneity testing are explained. Each material was processed into a batch of chips, which is shown to represent the whole material and into 240 disks which are available as samples of the respective CRM. The chips were analysed in up to 15 laboratories for Al, Cd, Cu, Fe, In, Pb, Sn and Tl (unalloyed zinc) and in addition Mg and Ni (zinc alloys). The certified values and their uncertainties are presented and a demonstration of the agreement between methods varying from charged particle activation analysis to digestion followed by voltammetry or other chemical methods.
Bibliographic Reference: Paper presented: Euroanalysis VII, Vienna (AT), August 25-31, 1990
Availability: Text not available
Record Number: 199011228 / Last updated on: 1994-12-01
Original language: en
Available languages: en