. The ranges of concentration levels of 226Ra, 232Th and
40K were 12 ± 0.6e244 ± 12.6, 3 ± 0.2e99 ± 4.9, and 109 ± 5.5e670 ± 34 Bq kg1
, respectively. In
the other side, the range values obtained from fertilizer samples under investigation were
(33.1e392.3 Bq kg1
), (0.6e2.7), (15.6e177.8 nGy h1
) and (20.1e229.1 mSv y1
) for radium
equivalent activity, g-radiation hazard index Igr, Dose rate (nGy h1
) and annual effective
dose equivalent (AED) in the air to the occupational workers, respectively. The obtained
values were compared with available reported data from other countries in literature.
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1.