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Handling editor: Xinde Cao Keywords: Tohoku-oki Tsunami deposit Principal component analysis Cluster analysis Heavy metal a b s t r a c t Tsunami deposits accumulated on the Tohoku coastal area in Japan due to the impact of the Tohokuoki earthquake. In the study reported in this paper, we applied principal component analysis (PCA) and cluster analysis (CA) to determine the concentrations of heavy metals in tsunami deposits that had been diluted with water or digested using 1 M HCl. The resultsdoi:10.1016/j.chemosphere.2015.09.078 pmid:26469936 fatcat:qmv5gj3oynf7hcjlqxds5457au