Concentrations of the Naturally-Derived Toxic Elements and Its Geochemical Characteristics of the Alluvial Marine Clay Layer of Osaka Plain, Japan

  • Hiroko ItoEmail author
  • Harue Masuda
  • Akihiko Oshima
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


In this study, we compared the bulk concentrations and the water soluble fractions extracted by the simple batch leaching test of toxic elements (B, Cr, Pb, As, Cd and Se) of the alluvial marine clays taken from Osaka Plain, Japan, to assess the risk of naturally-derived toxic elements are required to promote the utilizations of excavation surplus soils. The results showed that (1) the concentrations of B, Cr and Pb of bulk sediments and the water soluble fraction leached by simple batch test were higher at the middle of marine clay layer where clay fraction is dominant, (2) the accumulation of As into the sediments and its release would be related to the change of redox condition in the sandy layers deposited in tidal zone, (3) 0.45-pm MF was not enough to remove colloidal particles, which would affect to the reproducibility of batch leaching test, especially Pb concentration, and (4) The contents of water soluble phase were small compared to the bulk concentrations, while the change of redox condition, in which the excavation surplus soils would be exposed, must be considered to evaluate the risk of toxic element dissolution.


Rational method for assessment Bulk concentration Water soluble concentration Boron Arsenic Lead 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Geo-Research InstituteOsakaJapan
  2. 2.Department of GeosciencesOsaka City UniversityOsakaJapan
  3. 3.Department of Urban GeoengineeringOsaka City UniversityOsakaJapan

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