Long-term 137Cs contamination of mushrooms following the Chernobyl fallout

Title: Long-term 137Cs contamination of mushrooms following the Chernobyl fallout

Author: D. Mascanzoni

Reference: Journal of Radioanalytical and Nuclear Chemistry July 2001, Volume 249, Issue 1, pp 245-249

DOI: 10.1023/A:1013263114576

Keywords: 137Cs, contamination, mushrooms, Europe, Sweden

Abstract: In the aftermath of the Chernobyl accident high concentrations of ¹³⁷ Cs were found in mushrooms in several European countries and in Sweden. Two edible mushrooms species were selected for a long-term investigation in order to evaluate the ¹³⁷Cs contamination over a long time. Samples of Suillus variegatus and Cantharellus spp. were collected from 1986to 1998 and their ¹³⁷ Cs contents assessed. The results show that the activity of ¹³⁷Cs remained more or less constant in Suillus variegatus, while it increased in Cantharellus spp. This reflects the forest ecosystem of the mushrooms, where nutrient-poor substrates, rich in organic substance and with high pH maintain ¹³⁷Cs available for uptake. A decay-correction of the time distribution shows that radioactive decay appears to be the main factor affecting the content of ¹³⁷Cs in mushrooms, at least in the medium term.

ＵＲＬ：http://link.springer.com/article/10.1023/A%3A1013263114576

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