Certified reference materials for the determination of cadmium in polyethylene
Certified reference materials for the determination of cadmium in polyethylene
复制标题
测定聚乙烯中镉的有证标准物质
DOI：
10.1007/bf00322924
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
C. Bauspiess
中科院分区：
文献类型：
--
作者：
J. Pauwels;A. Lamberty;P. Bievre;K. Grobecker;C. Bauspiess
四种聚乙烯标准材料的镉浓度范围在40至400毫克/公斤之间，已由IRMM代表德国法兰克福的Verband der Automobilindustrie e.v. （VDA）认证。采用固体进样塞曼原子吸收光谱法（SS-ZAAS）验证了材料的均匀性。采用同位素稀释质谱法（IDMS）测定镉含量，采用四极热电离质谱仪。经认证的不确定度相对约为3%，对应于95%的置信水平；它们考虑到统计和系统性质的所有贡献。该材料在IRMM的国际测量评估计划（IMEP）范围内使用。
Four polyethylene reference materials with cadmium concentrations in the range of 40 to 400 mg/kg have been certified by IRMM on behalf of Verband der Automobilindustrie e.V. (VDA), Frankfurt, Germany. 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 ionization mass spectrometer. The certified uncertainties were about 3% relative and correspond to confidence levels of 95%; they take into account all contributions of statistical and systematic nature. The material was used within the scope of IRMM's International Measurement Evaluation Programme (IMEP).