科研之友
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摘要
The analysis of causes and environmental effects of natural gamma-ray radioactive field in an uranium mine was carried out by combining the composite analysis of primary uranium mineral in rocks and supergene uranium in soil. The results show that high gamma-ray radiation is mainly caused by the primary uranium-bearing ores, which can reach 3.5 mu Gy/h. Hypergene minerals contain lower radionuclide concentrations and radiation. Except in the mining region, gamma radiation ranging from 0.02 to 1 mu Gy/h is safe for people in the uranium mine. Compared with the background, the count of microbes, especially fungi, in the study area of soil samples are the least in numbers. The radiation environment is favorable for the growth of radiation-resistant microbial. The 37 mu Gy/h value can be used as a microorganisms tolerance reference for fungi and ctinomycetes to gamma radiation.
- 出版日期2017-9
- 单位西南科技大学
