Measurement Of Concentrations Of The Natural
Radio-activities And Cs-137 In Soil Samples In
The Al-Baha Region Of Saudi Arabia
Author(s)
A. A. Al-Zahrany & K. S. Al-Mogabes
Abstract
Measurement of concentrations of naturally occurring radio nuclides together
with Cs-137 deposited in soil have been carried out in the Al-Baha region of the
Kingdom of Saudi Arabia. Soil samples collected from about fifty locations have
been analyzed using high resolution hyper pure germanium spectrometers.
Concentrations of the gamma emitting radio nuclides from naturally occurring
uranium-radium and thorium series, Potassium-40, and Cesium-137 have been
determined for the selected locations. Gamma-ray dose rates have been
calculated from the measured concentrations of natural radioactivity in soil.
Keywords: natural radioactivity, Cs-137 fallout, NORM, radioactivity level in
soil, Saudi Arabia.
1 Introduction
Naturally occurring radioactive material (NORM), arising from the decay of
uranium-radium and thorium series and potassium-40, has been found in the
earth’s crust and soil, the underground water and even in living tissues and
organs of any living organism. This presence has been recognized since the early
1930’s. However it received minimal attention until the last few decades, when
the role of terrestrial radiation as the main contributor to the collective effective
dose of the world’s populations has been recognized UNSCEAR [1–3].
Moreover, measurement of concentrations of some man-made radio nuclides
such as Cs-137 and others in soil is too important to evaluate the contribution of
Keywords
natural radioactivity, Cs-137 fallout, NORM, radioactivity level in soil, Saudi Arabia
Related Book
Other papers in this volume
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