Analysis of the content of five radionuclides in wild edible fungi
10.13491/j.issn.1004-714X.2025.02.017
- VernacularTitle:野生食用菌中5种放射性核素含量分析
- Author:
Zhenglin YE
1
;
Qiang ZHOU
1
;
Fei TUO
1
;
Baolu YANG
1
;
Zeshu LI
1
;
Weihao QIN
1
;
Shuying KONG
1
Author Information
1. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088 China.
- Publication Type:OriginalArticles
- Keywords:
Wild edible mushroom;
Natural radionuclide;
137Cs;
γ spectrum
- From:
Chinese Journal of Radiological Health
2025;34(2):242-248
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the content and distribution characteristics of the artificial radionuclide 137Cs and the natural radionuclides 210Pb, 226Ra, 228Ra, and 40K in wild edible fungi, and calculate the committed effective dose due to 137Cs and 210Pb in wild edible fungi. Methods Thirty samples of wild edible fungi were collected and their caps and stems were separated. A total of 60 samples were measured for 137Cs, 210Pb, 226Ra, 228Ra, and 40K using a BE5030 wide-energy, low-background, high-purity germanium γ spectrometer. The paired analysis of the four radionuclides 226Ra, 210Pb, 137Cs, and 40K was performed using SPSS 11.5. Results Among the 60 samples, the detection rates and dry weight specific activity ranges of 137Cs, 210Pb, 226Ra, 228Ra, and 40K were 97% and 0.62-384 Bq/kg, 73% and 6.4-159 Bq/kg, 52% and 0.7-28.8 Bq/kg, 5% and 0.43-2.18 Bq/kg and 100% and （77.4-264) × 10 Bq/kg, respectively. Conclusion Based on the analysis of the 60 samples, the detection rate of radionuclides is in the order of 40K, 137Cs, 210Pb, 226Ra, and 228Ra. In terms of the specific activity, the distribution of 40K and 226Ra in wild edible fungi in the same region is basically uniform, while the content of 210Pb and 137Cs fluctuates in different samples. Although 137Cs and 210Pb can be detected in most of the wild edible fungi, the annual committed effective dose due to ingestion of wild edible fungi is negligible.
