作者: Keiko Tagami , Shigeo Uchida
DOI: 10.1016/J.JENVRAD.2014.12.013
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摘要: Concentrations of (137)Cs and (40)K in different tissues edible wild herbaceous plants, that is, leaf blade petiole for giant butterbur (Petasites japonicas (Siebold et Zucc.) Maxim.), leaf, stem strobilus fertile shoot field horsetail (Equisetum arvense L.) were measured 2012-2014 to clarify the effect Japan from Fukushima Daiichi Nuclear Power Plant accident. The concentrations decreased with time effective half-lives ca. 450 d 360 horsetail, respectively. ANOVA test revealed distributions different. Therefore, other Japanese knotweed (Fallopia japonica (Houtt.) Ronse Decr.) Canada goldenrod (Solidago canadensis L.), gingko (Ginkgo biloba Someiyoshino cherry (Cerasus × yedoensis (Matsum.) A.V.Vassil. 'Somei-yoshino') collected same sampling their compared those parts. For (137)Cs, parts 1.1-6.0 times higher than all six plants. On hand, 0.40-0.97 observed Discrimination ratios (40)K/(137)Cs or then calculated they ranged 0.09 0.57. These results suggested Cs K did not behave similarly these Thus, understand radiocesium fate measurement should be used as an analog behavior although is known have a similar chemical reactivity K.