عنوان المقالة:قياس النشاط الإشعاعي الطبيعي في المختارة عينات من المعامل الطبية في العراق Measurement of natural radioactivity in selected samples of medical plants in Iraq
عبد الحسين عبد الأمير كريم ، هيام ناجي هادي ، علي عبد أبوجاسم
English Authors
Abdulhussein Abdulameer Kareem, Heiyam Najy Hady, Ali Abid Abojassim
Abstract
In present study, natural levels of radiation in some selected medical plants existing in the Iraqi stores
were estimated to determine any activity concentration, radium equivalent and internal hazard index
due to radionuclide, of 238U, 232Th as well as 40K, which occurs naturally. This activity concentration
was identified by gamma-ray spectroscopy (NaI(Tl)). The findings indicate that, the rate of activity
concentration for Uranum-238, Thorium-232 and Potasium-40 in the medical plants were (4.953 0.37)
Bq.kg-1, (2.916 0.12) Bq.kg-1 and (219.134 2.24) Bq.kg-1 respectively. The values of the radium
equivalent ranged from (6.081 0.09) Bq.kg-1 to (44.608 0.46) Bq.kg-1 with the rate of (20.278 0.38)
Bq.kg-1, while the values of the internal hazard index ranged from (0.016) to (0.135) with the rate of
(0.060). The natural radionuclides and activity of the radium equivalent in the medical plant samples
were far below the world for the ingestion of naturally occurring radionuclide provided in UNSCEAR
2000 report. Also there was calculated the internal hazard index for all samples that were less than
unity. The samples under study were analysed and discharged, therefore they can no be consumed
anymore.
عبد الحسين عبد الامير الكوفي | Abdulhussein A. Alkufi | 4357