Natural radionuclides in soil near a coal-fired power plant in the high background radiation area, South China
In this study, soil samples around Mawan coal-fired power plant (CFPP) in Shenzhen, a high background radiation area in South China, were analyzed for natural radionuclides. The activity concentration of 226Ra, 232Th, and 40K in soils around Mawan CFPP ranged from approximately 72 to 358 Bq kg−1 (averaged 204 Bq kg−1), 118 to 432 Bq kg−1 (averaged 265 Bq kg−1), and 101 to 2168 Bq kg−1 (averaged 1269 Bq kg−1), respectively, being found to be significantly higher than the world range values. The levels of these radionuclides in soil largely decreased with increasing distance from the CFPP, indicating a technologically enhanced natural radiation near the CFPP. The Raeq values for the soil samples around Mawan CFPP ranged from 346 to 878 Bq kg−1, most of which exceeded the allowed maximum Raeq value of 370 Bq kg−1. The operating of CFPP has increased the total radioactive dose received for the nearby population.
KeywordsCFPP Soil Natural radionuclide High background radiation area Shenzhen
This work was supported by Natural Science Foundation of China (no. 41102217) and the Special Funding of Human Settlements and Environment Commission of Shenzhen Municipality.
- Cevik, U., Damla, N., & Nezir, S. (2007). Radiological characterization of Cayırhan coal-fired power plant in Turkey. Fuel, 86, 2509–2513.Google Scholar
- Liu, G., Niu, Z., Niekerk, D., Xue, J., & Zheng, L. (2008). Polycyclic aromatic Hydrocarbons (PAHs) from coal combustion: emissions, analysis, and toxicology. Reviews of Environmental Contamination and Toxicology, 192, 1–28.Google Scholar
- Liu, J., Deng, X., Han, B., Wang, X., Wu, G., & Xi, J. (2011). Physico-chemical properties of soils and ecological effect in Nanshan Park, Shenzhen. Journal of Anhui Agriculture Science, 39, 14679–14683 (in Chinese).Google Scholar
- Mondal, T., Sengupta, D., & Mandal, A. (2006). Natural radioactivity of ash and coal in major thermal power plants of West Bengal, India. Current Science, 91, 1387–1392.Google Scholar
- Papaefthymiou, H. V., Manousakas, M., Fouskas, A., & Siavalas, G. (2013). Spatial and vertical distribution and risk assessment of natural radionuclides in soils surrounding the lignite-fired power plants in Megalopolis basin, Greece. Radiation Protection Dosimetry, 156(1), 49–58.CrossRefGoogle Scholar
- Shi, J., Qiu, G., Du, X., & Li, N. (2010). Recognition of radioactive abnormal belt and analysis of influencing factors in Shenzhen City. World Nuclear Geoscience, 27(3), 182–186 (in Chinese).Google Scholar
- UNSCEAR (1993) UNSCEAR 1993 report. Sources and effects of ionizing radiation. United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) Report to the General Assembly with annexes, United Nations, New YorkGoogle Scholar
- UNSCEAR (2000) UNSCEAR 2000 report. Sources and effects of ionizing radiation. United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) Report to the General Assembly with annexes, United Nations, New YorkGoogle Scholar