Measurement of radioactivity levels of the Sirt gulf, Libya

M. A. Shenber Radiation Protection and Health Physics Department, Environmental Radiation Measurements Division, Tajoura Nuclear Research Center, P.O. Box 84326, Tripoli, Libya

E. E. Elshamis Radiation Protection and Health Physics Department, Environmental Radiation Measurements Division, Tajoura Nuclear Research Center, P.O. Box 84326, Tripoli, Libya

A. R. Bader Radiation Protection and Health Physics Department, Environmental Radiation Measurements Division, Tajoura Nuclear Research Center, P.O. Box 84326, Tripoli, Libya

M. N. Elayan Radiation Protection and Health Physics Department, Environmental Radiation Measurements Division, Tajoura Nuclear Research Center, P.O. Box 84326, Tripoli, Libya

A. T. Elkikli Radiation Protection and Health Physics Department, Environmental Radiation Measurements Division, Tajoura Nuclear Research Center, P.O. Box 84326, Tripoli, Libya

The paper presents the results of measurements on air and soil samples collected for their natural and artificial radioactivity content. The radionuclides studied under this programme are ⁷Be and ¹³⁷Cs. Average activity concentrations in surface air of ⁷Be and ¹³⁷Cs were found to be 1920 and 2.1 μBq m^‐3, respectively. ¹³⁷Cs activity concentration in surface soil is found to be 450m Bq kg^‐1. Estimated effective doses to adult from inhaled ⁷Be and ¹³⁷Cs were found to be 1 and 0.13 nSvy^‐1, respectively.

The average outdoors absorbed dose rate in air, 1 m above the ground level was found to be (48 ± 4.0 nGy h^‐1), based on the analysis of thermoluminescence dosimeters data collected.

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