RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
Accumulation of 137Cs in Trefoil (Leaf and Stem), “Mitsuba”, Cryptotaenia japonica Hassk, Immersed in Hydroponic Culture Medium
Misako MOTEGISadaaki MIYAKETakashi OHSAWAKiyoaki NAKAZAWAYoshiro IZUMO
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1998 Volume 47 Issue 11 Pages 824-829

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Abstract

Accumulation of 137Cs in trefoil (leaf and stem), “Mitsuba”, Cryptotaenia japonica Hassk, with or without root was investigated to prepare higher radioactive plant in hydroponic culture medium (140-150 Bq/ml) .
It was found that 137Cs concentration in plant tissue was increased with time, as high as 1.6 times of that in the culture medium after 4 days.
On the other hand, 137Cs concentration was affected by carrier element (Cs > 6ppm) and coexistent elements in the medium.
Radioactivity of the plant after 4 days was shown to be sufficient for successive experiments.

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© Japan Radioisotope Association
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