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Paper Information

Journal:   IRANIAN JOURNAL OF MEDICAL PHYSICS   JUNE 2016 , Volume 13 , Number 2; Page(s) 109 To 117.
 
Paper: 

DETERMINATION OF RADIONUCLIDES CONCENTRATION AND AVERAGE ANNUAL COMMITTED EFFECTIVE DOSE DUE TO INGESTION FOR SOME MEDICINAL AND EDIBLE PLANTS FROM SHAZAND (MARKAZI PROVINCE), IRAN

 
 
Author(s):  POURIMANI REZA*, NOORI MITRA, MADADI MARYAM
 
* DEPARTMENT OF PHYSICS, FACULTY OF SCIENCE, ARAK UNIVERSITY, ARAK, IRAN
 
Abstract: 

Introduction: Natural and artificial radionuclides are the main sources of human radiation exposure, which enter the food chain from the environment. Radionuclides can affect human health by transferring from soil to plants and entering the human body. In this research study, we aimed to determine the activity concentrations of radionuclides and calculate the average annual committed effective dose (AACED) due to the ingestion of some medicinal and edible plants from Shazand, Markazi Province, Iran.
Materials and Methods: The specific activities of 226Ra, 232Th, 40K, and 137Cs in eight medicinal and edible plant species and their surrounding soils were determined, using gamma-ray spectrometry and a high-purity germanium (HPGe) detector. The samples were collected from Shazand, situated in Markazi Province, Iran.
Results: The maximum soil-to-plant transfer factor (TF) for 226Ra, 232Th, 40K, and 137Cswas estimated at 0.13, 0.13, 3.17, and 0.09, respectively. Based on the findings, the AACED for 1kg of edible plants varied from 0.63±0.16 to 13.71±0.14
mSv/y. The annual gonadal dose Equivalent (AGDE) varied from 556 to 717 mSv/y for the soil samples (mean: 642mSv/y). The threshold consumption rate for edible plants ranged between21.86and 82.63 kg/y.
Conclusion: In this study, AACED due to the ingestion of radionuclides was lower than the global average (0.3 mSv/y). Therefore, the present results indicated no radiation health risks, associated with the use of these medicinal plants for disease treatment. However, it should be noted that all soil samples and some plants were polluted by radiocesium.

 
Keyword(s): NATURAL RADIATION, MEDICINAL PLANT, RADIONUCLIDE
 
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