Radioactivity Levels, Spatial Distribution, and Radiological Risk Assessment of Ra, Ra, K, and H in Water Samples from Dhaka City and Savar, Bangladesh.

This investigation was conducted to measure the radioactivity levels of Ra, Ra, K, and H in the 13 most popular branded bottled mineral water (BMW), 12 groundwater sources consumed in Dhaka city, Bangladesh, and six water samples collected from the nuclear object site at Savar, adjacent to Dhaka. The activity of H was measured by using a liquid scintillation counter, and a gamma-ray spectrometer with an HPGe detector was used to measure the activity of other radionuclides. The average activity concentrations of Ra, Ra, K, and H in BMW samples and groundwater were found to be 1.