The Natural Radioactivity Of Soil Samples

1791 Words8 Pages
Abstract The concentrations of 226Ra, 232Th and 40K are measured in the material collected from two locations. The collected materials are tested using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and from 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, the absorbed dose rate, annual effective dose and hazard index is also calculated Keywords Radionuclides, radiological hazard, building material radioactive 1. Introduction Natural sources exist in several geological formations such as soils, rocks, sediments, vegetation, water and air emit radiation. While 4% is of artificial origin (Chougan-kar et al., 2003; El-Daly and Hussein, 2008) [1]. The natural radioactivity of soil samples determined from the 226Ra, 232Th and40K contents. Rocks and soils contribute considerably to indoor and outdoor exposure to the environmental radioactivity by gamma radiation emitting mainly from 226Ra, 232Th and 40K contents, and beta radiation. The soil radioactivity is a good indicator of the distribution and accumulation of radioactivity in the environment and knowledge of these concentrations provides useful information in the monitoring of environment radioactivity (kessaratikoon and Awaekechi, 2008) [2]. Even though these radionuclides are extensively distributed, their concentrations have been proven to depend on the local geological
Get Access