| 叶政霖,拓飞,杨宝路,等.野生食用菌中137Cs与稳定铯的相关性探讨[J].中华放射医学与防护杂志,2025,45(5):460-464.Ye Zhenglin,Tuo Fei,Yang Baolu,et al.Relationship between 137Cs and stable cesium in wild edible fungi[J].Chin J Radiol Med Prot,2025,45(5):460-464 |
| 野生食用菌中137Cs与稳定铯的相关性探讨 |
| Relationship between 137Cs and stable cesium in wild edible fungi |
| 投稿时间：2024-09-26 |
| DOI：10.3760/cma.j.cn112271-20240926-00385 |
| 中文关键词: 野生食用菌 137Cs 稳定铯 相关性 |
| 英文关键词:Wild edible fungus 137Cs Stable cesium Correlation |
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| 中文摘要: |
| 目的 探究野生食用菌中人工放射性核素137Cs与稳定铯元素之间的相关性。方法 采集我国东北地区野生食用菌的菌盖(含菌褶)和菌柄样品共30份,根据GB/T 16145-2022推荐的程序进行137Cs的测量和分析,通过电感耦合等离子体质谱法(ICP-MS)对稳定铯测量;使用SPSS 11.5对数据进行相关性分析。结果 菌盖中137Cs的比活度范围为0.52~55.9 Bq/kg(干重),稳定铯含量范围0.069~16.2 mg/kg(干重);菌柄中137Cs的比活度范围为0.53~101(Bq/kg,干重),稳定铯含量范围为0.075~11.5 mg/kg(干重);菌盖、菌柄以及所有样品中137Cs比活度与稳定铯含量之间存在良好的相关性(r=0.956、0.912、0.931,P＜0.01),二者的比值范围为2.09~20.1,平均值10.7。结论 野生食用菌在生长基质中吸收Cs元素时并不会区分 137Cs 和稳定铯;137Cs的比活度与稳定铯含量之间存在良好的相关性,当有外源性的137Cs污染发生时,137Cs比活度与稳定铯含量的比值会发生明显变化,比值增高可作为137Cs污染事件的判定参考。 |
| 英文摘要: |
| Objective To investigate the relationship between artificial radionuclide 137Cs and stable cesium (Cs) in wild edible fungi and seek potential correlations. Methods A total of 30 samples, including the caps (with gills) and stipes of wild edible fungi, were collected from the northeastern region of China. The measurement and analysis of 137Cs were conducted following recommended procedures in GB/T 16145-2022, and stable Cs was determined using inductively coupled plasma mass spectrometry (ICP-MS). Then, the correlation analysis of data on 137Cs and stable Cs was performed using SPSS 11.5 software, and scatter plots were prepared using the Origin 21.0 software. Results The fungi caps exhibited a specific activity of 137Cs ranging from 0.52 to 55.9 Bq/kg (dry weight) and a stable Cs content from 0.069 mg/kg to 16.2 mg/kg (dry weight). The stipes showed a specific activity of 137Cs ranging from 0.53 Bq/kg to 101 Bq/kg (dry weight) and a stable Cs content from 0.075 to 11.5 mg/kg (dry weight). These data revealed a significant correlation between the specific activity of 137Cs and the stable cesium content in all samples including caps and stipes, with correlation coefficients r of 0.956, 0.912, and 0.931, respectively, and all significant levels P < 0.01. The ratios of the specific activity of 137Cs to stable Cs content varied from 2.09 Bq/kg to 20.1 Bq/kg (dry weight), with an average of 10.7 Bq/kg (dry weight). Conclusions Wild edible fungi fail to distinguish between 137Cs and stable cesium when absorbing Cs elements from their growing substrates. Furthermore, there is a strong correlation between the specific activity of 137Cs and stable Cs content. In the case of exogenous 137Cs contamination, the ratio of the specific activity of 137Cs and stable Cs content will significantly change. Therefore, an increase in the ratio can be used as a reference for identifying 137Cs contamination events. |
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