¹³⁷Cs contamination of Japanese mustard spinach by resuspended particles in areas with different contamination conditions

We investigated cesium-137 (¹³⁷Cs) transfer to Japanese mustard spinaches (spinach) due to resuspended particles across the multiple sites in Fukushima Prefecture, Japan. At a site located in difficult-to-return zone, ¹³⁷Cs deposition in pots placed near the ground increased. However, there was no significant difference in the amount of ¹³⁷Cs in spinach placed near the ground and those placed far from the ground. ¹³⁷Cs adsorption to the spinach was less than 10% of the ¹³⁷Cs deposition at each study site. For future study, it is necessary to evaluate the effects of weather and growth conditions on ¹³⁷Cs absorption to the spinach. (author)