Environmental radioactivity assessment of the Brunei Darussalam coastline of the South China Sea.

Radioactivity levels of naturally occurring radionuclides at the coast of Brunei Darussalam were evaluated along with their dose rates. Twenty-six berm and intertidal sediment samples were measured using gamma-ray spectrometry. The mean activity concentrations of Ra, Th and K in berm sediments were 10.

Assessment of radioactivity concentration in intertidal sediments from coastal provinces in Oman and estimation of hazard and radiation indices.

The natural radioactivity of intertidal sediment samples collected from the beaches of Oman was investigated. Using gamma ray spectrometry, the activity concentrations of Ra, Th and K in the sediment samples were measured to have average values of 20.49 ± 3.