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学術研究成果リスト

Detail of Grant Awarded Academic Researches

Project

Wide-area survey of elemental distribution using cicada shells in the Tama River system

Academic
Research
No.359
Principal
Investigator
Toshihiko OHNUKI
Affiliation Institute of Innovative Research Tokyo Institute of Technology
Research
Summary

We have dissolved cicada shells collected around Tama-River, and measured concentration of elements in the shells to study the distribution of the contaminants. We measured Cu、Fe、Mn、Zn、Ni、Pb, and As in 44 shells sampled at the sites from Okutama-lake to Estuary, and the sites located far from the river for comparison. Among the measured elements, Fe is the highest concentration followed by Cu and Mn. The concentration of Cu in the shells collected were higher at the downstream than at the upper stream, resulting from the human activity. The concentrations of Ni, Pb, and As were extremely low. We compared the measured concentrations with the reported concentrations in the soils.


Collaborators

Maho KOMURO
Masahiko NAKASE
Hiroyuki II
Yukihiko SATOU

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