Radioactive artificial Cs-137 and natural K-40 activity in 21 edible mushrooms of the genus Boletus species from SW China

文献类型： 外文期刊

第一作者： Falandysz, Jerzy

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

作者机构：

关键词： Asia;Yunnan;Organic food;Radioactive fallout;Wild mushrooms

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： This study, for the first time, presents the results of activity concentration determinations for Cs-137 and K-40 in a high number (21 species, 87 composite samples, and 807 fruiting bodies) of mushrooms of the genus Boletus from across Yunnan in 2011-2014 and Sichuan (Boletus tomentipes) using high-resolution high-purity germanium detector. Activity concentrations of Cs-137 demonstrated some variability and range from < 4.4 to 83 +/- 3 Bq kg(-1) dry biomass in caps and from < 3.8 to 37 +/- 3 Bq kg(-1) dry biomass in stipes, and of K-40, respectively, from 420 +/- 41 to 1300 +/- 110 and from 520 +/- 61 to 1300 +/- 140 Bq kg(-1) dry biomass. No significant variations were observed regarding Cs-137 and K-40 activity concentrations among the same Boletus species from different sampling sites. No activity concentrations from Cs-134 were detected in any mushrooms. Internal dose rates estimated were from intake of 1 kg of mushrooms per annum for Cs-137 range for species and regions from around < 0.0031 to 0.047 +/- 0.003 mu Sv, while those for K-40 were from around 0.22 +/- 0.04 to 1.2 +/- 0.1 mu Sv. The overall intake of Cs-137 was low since low contamination was found in Boletus species.

分类号： X5`X

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