Current development of the human and environmental contamination in the Bryansk-Gomel Spot after the Chernobyl accident
Current development of the human and environmental contamination in the Bryansk-Gomel Spot after the Chernobyl accident
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DOI：
10.1007/s004110000043
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发表时间：
2000-06-01
影响因子：
1.7
通讯作者：
Neth, R
中科院分区：
文献类型：
--
作者：
Hille, R;Hill, P;Neth, R
直到1991年，人们还认为，在1986年切尔诺贝利事故发生后，由于土壤中的迁移过程、放射性衰变和防护措施，对环境、食品和人类的放射性污染的时间发展将会减少。事故发生后最初几年的所有测量结果都证实了这一假设。然而，自1991年以来，人们观察到这一发展发生了变化，因为许多测量表明，食品和人类污染停滞不前，在某些情况下甚至有所增加。如果将其归一化到当地地面污染的平均水平，只有少数几类食品（如土豆）的放射性略有下降。本文介绍了1991年以来布良斯克-戈梅尔点放射性污染的时间变化情况。讨论了长期剂量评估的后果。
Up to 1991, it was assumed that after the Chernobyl accident in 1986 the time development of radioactive contamination with regard to environment, foodstuff, and man would decrease due to migration processes in the soil, radioactive decay, and protective measures. This assumption was confirmed by all measurements in the first few years after the accident. Since 1991, however, a change in this development has been observed, as many measurements show stagnation or in some cases even an increase of foodstuff and human contamination. If normalised to an average local ground contamination, only a few groups of foodstuffs (e.g., potatoes) show a slight decrease in radioactivity. In this paper, the time development of radioactive contamination in the Bryansk-Gomel Spot on the basis of measurements since 1991 is presented. The consequences for long-term dose assessment are discussed.