Radioactive artificial137Cs and natural40K activity in 21 edible mushrooms of the genus Boletus species from SW China.
This study, for the first time, presents the results of activity concentration determinations for137Cs and40K 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 of137Cs demonstrated some variability and range from <4.4 to 83 ± 3 Bq kg-1dry biomass in caps and from <3.8 to 37 ± 3 Bq kg-1dry biomass in stipes, and of40K, respectively, from 420 ± 41 to 1300 ± 110 and from 520 ± 61 to 1300 ± 140 Bq kg-1dry biomass. No significant variations were observed regarding137Cs and40K activity concentrations among the same Boletus species from different sampling sites. No activity concentrations from134Cs were detected in any mushrooms. Internal dose rates estimated were from intake of 1 kg of mushrooms per annum for137Cs range for species and regions from around <0.0031 to 0.047 ± 0.003 μSv, while those for40K were from around 0.22 ± 0.04 to 1.2 ± 0.1 μSv. The overall intake of137Cs was low since low contamination was found in Boletus species.
Gdańsk University, 63 Wita Stwosza Str, 80-803, Gdańsk, Poland. jerzy.falandysz@ug.edu.pl.
Jerzy
http://orcid.org/0000-0003-2547-2496
J
Falandysz
Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Panlong District, Kunming, 650200, China.|Yunnan Technical Center for Quality of Chinese Materia Medica, Kunming, 650200, China.
Ji
J
Zhang
Institute of Meteorology and Water Management, National Research Institute, Maritime Branch, Waszyngtona 42, 81-342, Gdynia, Poland.
Tamara
T
Zalewska
D000363:Agaricales / Q000737:chemistry*; D001487:Basidiomycota / Q000737:chemistry*; D002588:Cesium Radioisotopes / Q000032:analysis*; D002681:China; D005507:Food Contamination, Radioactive / Q000032:analysis*; D006801:Humans; D011197:Potassium Radioisotopes / Q000032:analysis*; D011829:Radiation Dosage; D011834:Radiation Monitoring; D012990:Soil Pollutants, Radioactive / Q000032:analysis*
D002588:Cesium Radioisotopes; D011197:Potassium Radioisotopes; D012990:Soil Pollutants, Radioactive
Asia; Organic food; Radioactive fallout; Wild mushrooms; Yunnan