Environmental impact of natural radionuclides from a coal-fired power plant in Spain
ABSTRACT This paper is a study of the radiological impact of a coal-fired power plant in Spain. Activity concentrations of six natural radionuclides were determined in coal, ash, mine wastes and sediments by gamma-ray spectrometry. The average activity concentrations of (238)U, (226)Ra,(224) Ra, (210)Pb, (232)Th and (40)K in coal were 24, 30, 28, 41, 23 and 242 Bq kg(-1) and in ash were 103, 128, 101, 124, 88 and 860 Bq kg(-1), respectively. The enrichment factor, radium equivalent activity and alpha index in the ash sample have been estimated. For the five waste pile samples, the absorbed dose rate was higher than the world average dose rate (60 nGy h(-1)). The dependence of radionuclide concentration on the grain size of nine sediments was also studied. The analysis of the radionuclides in waste and sediment samples will demonstrate the distribution and mobility of these elements through the environment, where a potential risk of contamination can be detected.
- Journal of Environmental Radioactivity 11/2014; 137:125–129. DOI:10.1016/j.jenvrad.2014.06.021 · 3.57 Impact Factor
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ABSTRACT: To evaluate the concentration of naturally occurring radioactive material particularly, uranium concentration in fly ash, samples were collected from Guru Nanak Dev Thermal Plant, Bathinda, Punjab, India and Suratgarh Super Thermal Power Station, Suratgarh, Rajasthan, India during 2010 to 2012. Samples were processed using ICP-MS (Inductively coupled plasma – mass spectrometry) with multi-element standards. A maximum and minimum concentration of uranium (4.99 mg.kg-1 and 0.63 mg.kg-1) was recorded in fly samples collected from SSTP, Suratgarh. Further, results were found to be very alarming and special action may be taken to prevent the exploration of uranium to the human being, live stocks and natural vegetations. However, this was a little attempt, and further study in this direction is recommended. Concentration of cesium was found in permissible level as data given by WHO but Uranium concentration is high in those area.