ABSTRACT 137Cs concentrations were measured in mushrooms in an area affected by radioactive discharges of the Mining-and-Chemical Combine (MCC) (Rosatom, Russia) in 2002–2017. The sources of radionuclides in the study sites were global fallouts and waterborne and airborne radioactive discharges of the MCC. The mushroom species Suillus granulatus and S. luteus showed the highest 137Cs concentrations (140–7100 Bq kg−1) for this area. Over the entire monitoring period, no significant change in 137Cs concentration was observed in the Suillus spp. samples collected from the sites with the aerial deposition of radionuclides. In the floodplain site with the radionuclide deposition from water and air, a significant decrease in the average 137Cs concentration was observed in the period between 2004 and 2017: a three-fold decrease in Suillus spp. and a nine-fold decrease in Lactarius deliciosus. The effective half-lives of 137Cs in fruiting bodies of the mushrooms L. deliciosus and Suillus spp. in this site were 3.6 ± 0.6 and 9.2 ± 2.7 years, respectively.

中文翻译：

---

对采矿和化工联合企业周围 30 公里区域蘑菇中放射性核素浓度的长期研究（俄罗斯）

摘要 137Cs 浓度是在 2002-2017 年受采矿和化学联合体 (MCC)（Rosatom，俄罗斯）放射性排放影响的地区的蘑菇中测量的。研究地点中放射性核素的来源是 MCC 的全球沉降物和水传播和空气传播的放射性排放。该地区的蘑菇物种 Suillus granulatus 和 S. luteus 显示出最高的 137Cs 浓度（140-7100 Bq kg-1）。在整个监测期间，在 Suillus spp 中没有观察到 137Cs 浓度的显着变化。从具有放射性核素空中沉积的地点收集的样品。在具有来自水和空气的放射性核素沉积的洪泛区，在 2004 年至 2017 年期间观察到平均 137Cs 浓度显着下降：Suillus spp 减少了三倍。Lactarius deliciosus 减少了 9 倍。137Cs 在蘑菇 L. deliciosus 和 Suillus spp 子实体中的有效半衰期。在这个站点分别为 3.6 ± 0.6 和 9.2 ± 2.7 年。