The Activity Concentrations and Radium Equivalent Activity in Soil Samples Collected from the Eastern Part of Basrah Governorate in Southern Iraq

Table 4

The half-lives, atomic masses, and the calculated radioactivity conversion factors from Bq/kg to ppm for  ²³⁸U, ²³²Th, ⁴⁰K radionuclides.

radionuclide

Half-life (years)

Atomic mass (u)