Analysis of radioactive nucleides in soil and some materials near Fukushima Daiichi Nuclear Power Station

Abstract

We have measured radioactive nucleides contained in soils and some materials near Fukushima Daiichi Nuclear Power Station with germanium semiconductor detectors. Te-129, Te-129m, I-131, Te-132, I-132, Cs-134, Cs-136, Cs-137, Ba-140, La-140, Tc-99m, Nb-95 and Ag-110m were detected. Proportion of Te-129, Te-129m, Cs-134, Cs-137 was almost same irrespective of sampling point. Proportion of I-131 among the radionucleides was a little dependent on the sampling point, and proportions of Nb-95 and Ag-110m were respectively largely different by the sampling point. Radioacitivity concentrations of moss and pine leaves were larger than the neighbor soil, strongly correlated with those of the soil and the proportion of the radioactive nucleides was almost same as the soil.