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Four polyethylene reference materials with cadmium concentrations in the range of 40 to 400 mg/kg have been certified by IRMM. The homogeneity of the materials was verified using solid sampling Zeeman atomic absorption spectrometry (SS-ZAAS). Their cadmium content was determined by isotope dilution mass spectrometry (IDMS) using a quadrupole thermal ionisation mass spectrometer. The certified uncertainties are about 3 % relative, corresponding to confidence levels of 95 %, and take into account all contributions of a statistical and systematic nature. The material was used within the scope of IRMM's International Measurement Evaluation Programme (IMEP).

Additional information

Authors: PAUWELS J ET AL., JRC Geel (BE);BAUSPIESS C, Mercedes-Benz AG, Stuttgart (DE)
Bibliographic Reference: Article: Fresenius' Journal of Analytical Chemistry, Vol. 349 (1994) pp. 409-411
Record Number: 199510190 / Last updated on: 1995-02-07
Original language: en
Available languages: en