Cs transfer from soils contaminated by resuspended particles to Japanese mustard spinach in difficult-to-return zone of Fukushima

大気浮遊塵を介した小松菜への放射性セシウムの移行

辰野 宇大*; 二瓶 直登*; 吉村 和也  ; 大手 信人*

Tatsuno, Takahiro*; Nihei, Naoto*; Yoshimura, Kazuya; Ote, Nobuhito*

This study investigated the transfer of Cs to crops and soil contamination by resuspended particles derived from airborne and ground surface. We conducted the cultivation test of a Japanese mustard spinach in pot placed at study fields. The soil in pots might be mainly contaminated by soil particles derived from the ground surface, and Cs transferred to the spinaches was observed. However, the proportion of water-exchangeable and organic fractions of Cs in the resuspended particles derived from airborne was greater than that from ground surface, resulting in the greater Cs transfer factor. Therefore, it is important to grasp the source of resuspended particles.