Radiocaesium pollution of fly agaric Amanita muscaria in fruiting bodies decreases with developmental stage

文献类型： 外文期刊

第一作者： Falandysz, Jerzy

作者： Falandysz, Jerzy;Falandysz, Jerzy;Falandysz, Jerzy;Zhang, Ji;Saniewski, Michal;Zalewska, Tamara

作者机构：

关键词： Caesium-137; potassium-40; mushrooms; natural radioactivity; radioactive pollution

期刊名称：ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES （ 影响因子：1.675； 五年影响因子：1.721 ）

ISSN： 1025-6016

年卷期： 2019 年 55 卷 3 期

页码：

收录情况： SCI

摘要： Amanita muscaria collected from a forested area in northern Poland in 2015 were analysed for activity concentrations of Cs-137 and K-40. Total K concentration values were calculated from K-40 data. Mushrooms were grouped in six fruiting bodies size classes regarding to their developmental stage. The Cs-137 activity concentrations declined in A. muscaria as the fruiting bodies maturated. The contents of K-40/K activity remained constant in caps at different developmental stage, while for stipes an increase was around twofold (K-40 from 925 +/- 55 Bq kg(-1) dry biomass in the baby individuals and 1600 +/- 63-1700 +/- 53 Bq kg(-1) dry biomass in two oldest classes). A. muscaria is a weak accumulator of Cs-137, while a steep drop in activity concentrations of this nuclide in the fruiting bodies as they maturate has not been reported earlier for mushrooms. Clearly, a fate of Cs-137 in A. muscaria is highly different from that of K-40/K that is an essential element to fungi. In parallel, an observed increase in the content of K-40/K in stipes of fruiting bodies with developmental state can be related to its 'hardening' and more fibrous nature with age and basic function to support the cap, but this has not been studied.

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