- 著者
-
Toshinori ARAMAKI
Ryohei SUGITA
Atsushi HIROSE
Natsuko I. KOBAYASHI
Keitaro TANOI
Tomoko M. NAKANISHI
- 出版者
- 公益社団法人 日本アイソトープ協会
- 雑誌
- RADIOISOTOPES (ISSN:00338303)
- 巻号頁・発行日
- vol.64, no.3, pp.169-176, 2015-03-15 (Released:2015-03-28)
- 参考文献数
- 23
- 被引用文献数
-
3
14
We performed an imaging analysis of 42K in Arabidopsis using real-time radioisotope imaging system(RRIS). First, we purified 42K from an 42Ar―42K generator. And then, we characterized RRIS performance by quantitatively determining 42K using standard series. As a result, the dynamic range for 42K was determined to be at least three orders of magnitude. Next, we evaluated the level of self-absorption in Arabidopsis organs by comparing the signal intensity detected using RRIS and the actual radioactivity detected by a gamma-counting method. There was no significant difference in detection efficiency between the thick bolt(stem) tissue and the thin leaf tissue. The reason for scarce self-absorption could be related to the relatively strong β ray emissions that have a maximum energy of 3525.4keV.