title: [Standard sample preparation method for quick determination of trace elements in plastic].
abstract: Reference sample was prepared by masterbatch method, containing heavy metals with known concentration of electronic information products (plastic), the repeatability and precision were determined, and reference sample preparation procedures were established. X-Ray fluorescence spectroscopy (XRF) analysis method was used to determine the repeatability and uncertainty in the analysis of the sample of heavy metals and bromine element. The working curve and the metrical methods for the reference sample were carried out. The results showed that the use of the method in the 200-2000 mg x kg(-1) concentration range for Hg, Pb, Cr and Br elements, and in the 20-200 mg x kg(-1) range for Cd elements, exhibited a very good linear relationship, and the repeatability of analysis methods for six times is good. In testing the circuit board ICB288G and ICB288 from the Mitsubishi Heavy Industry Company, results agreed with the recommended values.
authors: Department of Chemistry, Tsinghua University, Beijing 100084, China. yaowq@tsinghua.edu.cn
authors: Wen-Qing
authors: WQ
authors: Yao
authors: Rui-Long
authors: RL
authors: Zong
authors: Yong-Fa
authors: YF
authors: Zhu