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

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.

journal_name

Environ Technol

journal_title

Environmental technology

authors

Katahira K,Moriwaki H,Kamura K,Yamazaki H

doi

10.1080/09593330.2018.1478885

subject

Has Abstract

pub_date

2019-11-01 00:00:00

pages

3473-3478

issue

26

eissn

0959-3330

issn

1479-487X

journal_volume

40

pub_type

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