Evaluation of the activity levels and the radiological hazards associated with the imported chemical fertilizers used in Libya
DOI:
https://doi.org/10.37375/susj.v15i2.3719Keywords:
activity concentration, sodiumiodide, RadiumEquivalent, cancerriskAbstract
This study provides a preliminary assessment of the levels of natural radioactivity in ten types of local chemical fertilizers collected from markets in Libya. The primary objective was to determine the activity concentrations of the naturally occurring radionuclides 226Ra, 232Th and 40Kl and subsequently evaluate the associated radiological hazard indices. Measurements were performed using gamma spectrometry with NaI (Tl) 3″ × 3″ detector. The determined activity concentration ranges were: 226Ra, 232Th and 40Klwere 65.27 ± 3.9–97.46 ± 5.09, 70.26 ± 4–86.3 ± 2.36, and 76.77 ± 7.43–131.79 ± 8.8 Bq kg−1, respectively Furthermore, the calculated radiological parameters showed the following ranges: Radium Equivalent Activity from 174.57 to 228.75 Bq kg−1 Cancer Risk Factor from 0.09 to 0.12 and Absorbed Dose Rate from 77.05 to 101.45 nGy h-1 The obtained concentration and hazard values were systematically compared with established international permissible levels by [UNSEAR 2016]. This research offers crucial baseline data for the radiation safety assessment of chemical fertilizers in Libya .
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