Characterization relationship between multinuclide nonequilibrium gamma radiation dose rate and 226 Ra activity concentration in contaminated soil around uranium mines
Journal of Environmental Radioactivity, ISSN: 0265-931X, Vol: 272, Page: 107347
2024
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Article Description
According to the characteristics of contaminated soil around uranium mines, combined with the pollution path of soil, the response relationship between the gamma radiation dose rate and radium activity concentration in contaminated soil was proposed by using a numerical model and subequilibrium theory. The results showed that the topsoil (depth 20 cm) made the mainly contribution of gamma dose rate (above 88%), and the main nuclide of concern was radium. Additionally, the uranium-radium equilibrium coefficient between 0 and 0.3 had a great influence on the gamma dose rate. The method proposed in this study could quickly identify the radium activity concentration in topsoil by using on-site gamma dose rate monitoring data. Compared with the actual monitoring results within ±10% error control, which had strong operability. This method could quickly identify the location and scope of contaminated soil and guide the on-site monitoring points around uranium mines.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0265931X23002400; http://dx.doi.org/10.1016/j.jenvrad.2023.107347; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85178646137&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/38056323; https://linkinghub.elsevier.com/retrieve/pii/S0265931X23002400; https://dx.doi.org/10.1016/j.jenvrad.2023.107347
Elsevier BV
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