Influence of reclamation on the concentrations and chemical states of elements in tideland sediment



In order to investigate the transition of tidelands, we collected sediments in Yatsu tideland and Nekozane river mouth in Tokyo Bay. The vertical distributions of elements were determined by instrumental neutron activation analysis and prompt gamma-ray analysis. In Yatsu tideland the vertical distribution changed in a great extent, which was considered as an influence of the neighboring reclamation. They were categorized into four groups, and two parameters were created by applying principal component analysis. Chemical states of iron and sulfur were also investigated by Mössbauer spectroscopy and X-ray absorption fine structure. These results show that Yatsu tideland became an anaerobic environment.


Pyrite Vertical Distribution Sediment Core Instrumental Neutron Activation Analysis Fluorinated Ethylene Propylene 


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© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  1. 1.Graduate School of Arts and SciencesThe University of TokyoTokyoJapan

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