We excluded sodium ions by using a material that specifically adsorbs Cs as a purification column and successfully eluted 127Cs by flowing a solution of ammonium sulfate into the column. The positron-emitting nuclide 127Cs was produced using the 127I (α, 4n) 127Cs reaction, which was induced by irradiation of sodium iodide with a 4He 2+ beam from a cyclotron. Herein, we describe a method for the production and purification of 127Cs and its use in visualizing Cs dynamics in a living animal. However, visualization of radiocesium in vivo is currently limited to plants. ![]() ![]() Visualizing the dynamics of cesium (Cs) is desirable to understand the impact of radiocesium when accidentally ingested or inhaled by humans.
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