Application of X-ray Absorption Fine Structure (XAFS) Spectroscopy to Speciation of Lead (Pb) Contaminants in Plastics

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Author(s)

    • Das Anirban Das Anirban
    • Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University|School of Petroleum Technology, Pandit Deendayal Petroleum University
    • Takahashi Yoshio Takahashi Yoshio
    • Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University|Laboratory for Multiple Isotope Research for Astro- and Geochemical Evolution (MIRAGE), Hiroshima University|Department of Earth and Planetary Science, The University of Tokyo

Abstract

A study using X-ray absorption fine structure (XAFS) spectroscopy in conjunction with chemical analyses was undertaken to determine the form of lead (Pb) compound(s) used as additives in plastic bags. Comparison of Pb L<sub>III</sub>-edge X-ray absorption near-edge structure (XANES) in samples with those of the standards, and XANES simulation studies revealed that spectra of samples were almost identical to that of PbCrO<sub>4</sub>, and ca. 80% of Pb was present in the form of PbCrO<sub>4</sub>. These findings were supported by the facts that Cr-XANES spectra of samples resembled that of PbCrO<sub>4</sub>, and Cr/Pb molar ratios in samples calculated from simulation of XANES agreed reasonably well with those of the chemical data. Results of <i>k</i><sup>3</sup>-weighted extended X-ray absorption fine structure (EXAFS) spectra of three of the samples showed that they resembled that of the PbCrO<sub>4</sub>.

Journal

  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 88(2), 341-345, 2015

    The Chemical Society of Japan

Codes

  • NII Article ID (NAID)
    130004703947
  • NII NACSIS-CAT ID (NCID)
    AA00580132
  • Text Lang
    ENG
  • ISSN
    0009-2673
  • NDL Article ID
    026099586
  • NDL Call No.
    Z53-B35
  • Data Source
    NDL  J-STAGE 
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