Radionuclide Enrichment Near Coal Processing in Southern Brazil
- Авторы: Campaner V.1, Luiz-Silva W.1, Smoak J.2, Sanders C.3
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Учреждения:
- Institute of Geoscience
- Environmental Science
- National Marine Science Centre, School of Environment, Science, and Engineering
- Выпуск: Том 60, № 2 (2018)
- Страницы: 215-220
- Раздел: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224459
- DOI: https://doi.org/10.1134/S1066362218020133
- ID: 224459
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Аннотация
This work highlights environmental radionuclide enrichment as a result of coal mining activity, including disbursement related to the coal processing in southern Brazil. Soil cores collected near the coal mining area showed 238U, 226Ra and 210Pb activities approximately 2 times greater than the background values. The highest activities were found at the surface and decrease downcore, indicating recent enrichment. Furthermore, atmospheric analyses of particulate matter indicated radionuclide enrichment up to 352 and 463 μBq m–3 of 226Ra and 210Pb, respectively, at the sites nearest to the coal-fired power plant. The atmospheric particulate material showed 210Pb/226Ra ratios similar to the fly ash near the coal-fired power plant, suggesting an enhanced source of 222Rn to the atmosphere likely associated with the power plant. However, no risk to the population near the coal processing was found, as noted by the total air absorbed γ-ray dose rate in the topsoil samples, 74 ± 19 nGy h–1, statistically similar to the background radioactivity (60 nGy h–1).
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Об авторах
V. Campaner
Institute of Geoscience
Email: wanilsonls@bol.com.br
Бразилия, Rua Carlos Gomes 250, Campinas, SP, 13083-855
W. Luiz-Silva
Institute of Geoscience
Автор, ответственный за переписку.
Email: wanilsonls@bol.com.br
Бразилия, Rua Carlos Gomes 250, Campinas, SP, 13083-855
J. Smoak
Environmental Science
Email: wanilsonls@bol.com.br
США, 140 7th Avenue South, St. Petersburg, Florida, 33701
C. Sanders
National Marine Science Centre, School of Environment, Science, and Engineering
Email: wanilsonls@bol.com.br
Австралия, Coffs Harbour, NSW, 2450