Background Gamma Radiation Mapping in Bangladesh: Radioactivity in the Surface Soil of ‘BhawalGahr’ Area of Gazipur

Abstract

Abstract:The total background radiation in the earth's environment is due to the contributions from natural (cosmic and terrestrial) as well as artificial (fall-out

Primordial radionuclides in the dust samples from the educational institutions of central Bangladesh: radiological risk assessment

“…This world average values were considered from the studies carried out before the year of 2000 while this study has complied the data of 232 Th, 226 Ra, and 40 K for surface soils, that were studied after the year of 2000 ( Table 4 ). However, the median n=23 values for 232 Th, and 40 K of this study were similar to those of concomitant median n=13 values of surface soils of Bangladesh ( Chowdhury et al., 1999 ; Hamid et al., 2002 ; Miah et al., 2012 ; Miah et al., 1998 ; Alam et al., 2013 ; Khatun et al., 2013 ; Islam et al., 2014 ; Ferdous et al., 2015 ; Ehsan et al., 2019 ; Khan et al., 2019a ; Mojumder et al., 2020 ). However, median values of radioactivity concentration of 226 Ra in analyzed classroom-dusts is more than two times higher in comparison to the surface soil samples of Bangladesh.…”

“… 197.3 71.5 603 Literature data Surface soils of Bangladesh Pabna, Bangladesh 13.4 15.6 202 Ehsan et al. (2019) Cox’s Bazar, Bangladesh 44.4 69.8 1007 Ahmad and MatiullahKhatibeh (1997) Gazipur, Bangladesh 66.7 101.6 425 Islam et al. (2014) Kustia, Bangladesh 6.3 6.6 225 Ehsan et al.…”