Two-step extraction method for lead isotope fractionation to reveal anthropogenic lead pollution

Kenshi Katahira, Hiroshi Moriwaki, Kazuo Kamura, Hideo Yamazaki

    Research output: Contribution to journalArticle

    Abstract

    This study developed the 2-step extraction method which eluted the Pb adsorbing on the surface of sediments in the first solution by aqua regia and extracted the Pb absorbed inside particles into the second solution by mixed acid of nitric acid, hydrofluoric acid and hydrogen peroxide solution. We applied the method to sediments in the enclosed water area and found out that the isotope ratios of Pb in the second solution represented those of natural origin. This advantage of the method makes it possible to distinguish the Pb between natural origin and anthropogenic source on the basis of the isotope ratios. The results showed that the method was useful to discuss the Pb sources and that anthropogenic Pb in the sediment samples analysed was mainly derived from China because of transboundary air pollution.

    Original languageEnglish
    Pages (from-to)1-6
    Number of pages6
    JournalEnvironmental Technology (United Kingdom)
    DOIs
    Publication statusAccepted/In press - 2018 May 30

    Fingerprint

    lead isotope
    Fractionation
    extraction method
    Isotopes
    Pollution
    fractionation
    pollution
    Sediments
    isotope
    sediment
    Hydrofluoric Acid
    transboundary pollution
    Nitric Acid
    hydrofluoric acid
    anthropogenic source
    nitric acid
    Air pollution
    hydrogen peroxide
    Hydrogen Peroxide
    atmospheric pollution

    Keywords

    • 2-step extraction
    • anthropogenic pollution
    • Kotani Pond
    • lead isotope ratios
    • natural origin

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Water Science and Technology
    • Waste Management and Disposal

    Cite this

    Two-step extraction method for lead isotope fractionation to reveal anthropogenic lead pollution. / Katahira, Kenshi; Moriwaki, Hiroshi; Kamura, Kazuo; Yamazaki, Hideo.

    In: Environmental Technology (United Kingdom), 30.05.2018, p. 1-6.

    Research output: Contribution to journalArticle

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