An Imaging of Radioactivity and Determination of Cs-134 and Cs-137 in Wheat Tissue Grown in Fukushima

Abstract

Radioactivity imaging and radioactivity measurement of Cs-134 and Cs-137 were performed for a wheat plant grown in Fukushima, after about 2 months of Fukushima Daiichi nuclear accident. The radioactivity was about 100 times higher in the withered leaves (about 300 kBq/kg) than new leaves (about 3 kBq/kg). The radioactivity was the lowest in panicles. The images by an imaging plate showed that the high radioactivity was found as many spots in the old leaves, suggesting that the radionuclides are strongly adhered to the leaves.