Assessment of soil contamination by Po-210 and Pb-210 around heavy oil and natural gas fired power plants

作者：Al Masri M S^*; Haddad Kh; Doubal A W; Awad I; Al Khatib Y

来源：Journal of Environmental Radioactivity, 2014, 132: 89-93.

DOI：10.1016/j.jenvrad.2014.01.018

• Polonium-210
• Lead-210
• Natural gas
• Thermal power plants
• Syria

Soil contamination by Pb-210 and Po-210 around heavy oil and natural gas power plants has been investigated; fly and bottom ash containing enhanced levels of Pb-210 and Po-210 were found to be the main source of surface soil contamination. The results showed that Pb-210 and Po-210 in fly-ash (economizer, superheater) is highly enriched with Pb-210 and Po-210, while bottom-ash (boiler) is depleted. The highest Pb-210 and Po-210 activity concentrations were found to be in economizer ash, whereas the lowest activity concentration was in the recirculator ash. On the other hand, Pb-210 and Po-210 activity concentrations in soil samples were found to be higher inside the plant site area than those samples collected from surrounding areas. The highest levels were found in the vicinity of Mhardeh and Tishreen power plants; both plants are operated by heavy oil and natural fuels, while the lowest values were found to be in those samples collected from Nasrieh power plant, which is only operated by one type of fuel, viz, natural gas. In addition, the levels of surface soil contamination have decreased as the distance from the power plant site center increased.

• 出版日期2014-6