Analytical study of 226 Ra activity concentration in market consuming foodstuffs of Ramsar, Iran.

Autor:	Gooniband Shooshtari M; Department of Medical Physics and Biomedical Engineering, School of Medicin, Shahid Beheshti University of Medical Sciences, Tehran, Iran., Deevband MR; Department of Medical Physics and Biomedical Engineering, School of Medicin, Shahid Beheshti University of Medical Sciences, Tehran, Iran., Kardan MR; Nuclear Science and Technology Research Institute, Tehran, Iran., Fathabadi N; Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER)Tehran University of Medical Sciences, Tehran, Iran.; Environmental Radiological Protection Division, National Radiation Protection Department, Iran Nuclear Regulatory Authority, Atomic Energy Organization of Iran (AEOI), Tehran, Iran., Salehi AA; Department of Energy Engineering, Sharif University of Technology, Tehran, Iran., Naddafi K; Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER)Tehran University of Medical Sciences, Tehran, Iran.; Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran., Yunesian M; Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER)Tehran University of Medical Sciences, Tehran, Iran.; Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran., Nabizadeh Nodehi R; Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER)Tehran University of Medical Sciences, Tehran, Iran.; Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran., Karimi M; Environmental Radiological Protection Division, National Radiation Protection Department, Iran Nuclear Regulatory Authority, Atomic Energy Organization of Iran (AEOI), Tehran, Iran., Hosseini SS; Environmental Radiological Protection Division, National Radiation Protection Department, Iran Nuclear Regulatory Authority, Atomic Energy Organization of Iran (AEOI), Tehran, Iran.
Jazyk:	angličtina
Zdroj:	Journal of environmental health science & engineering [J Environ Health Sci Eng] 2017 Sep 07; Vol. 15, pp. 19. Date of Electronic Publication: 2017 Sep 07 (Print Publication: 2017).
DOI:	10.1186/s40201-017-0281-3
Abstrakt:	Background: Ramsar, a city of Iran located on the coast of the Caspian Sea, has been considered to be enormously important due to its high natural radioactivity levels. People living in High Level Natural Radiation Areas (HLNRAs) have been exposed by several sources, one of which could be foodstuff. However, many studies have been carried out to measure the environmental radioactivity in Ramsar, but no survey has been conducted in all stapled consumed foods yet. This study was dedicated to determine ²²⁶ Ra activity concentration in the daily diets of Ramsar residents as a probable exposure. Methods: Approximately 70 different market samples were collected during the four seasons based on the daily consumption patterns of residents which have the highest consumption and their availability in the seasons. All samples, after washing, drying and pretreatment, were analyzed for ²²⁶ Ra radionuclide determination by α-spectrometry. Results: The mean radioactivity concentration of ²²⁶ Ra ranged between 7 ± 1 mBq Kg ^-1 wet weight in meat, and 318 ± 118 mBq Kg ^-1 for tea dry leaves. The ²²⁶ Ra activity concentrations in collected samples varied from below the minimum detectable activity up to 530 ± 30 mBq Kg ^-1 . To compare the results with United Nations Scientific Committee on Effects of Atomic Radiation (UNSCEAR) reference values, the ²²⁶ Ra activity concentrations concluded from the results appear to be higher in milk, chicken and eggs and less in grain products, vegetables, fruits and fish products. These results indicate that no significant ²²⁶ Ra contamination is present in market foodstuffs and provide reference values for the foodstuffs in Ramsar. Conclusions: Of the total daily dietary ²²⁶ Ra exposure from market consuming foodstuffs for adults in Ramsar, the largest percentage was from wheat. The residents consuming wheat and manufacturing wheat products such as bread, pasta, porridge, crackers, biscuits, pancakes, pies, pastries, cakes, cookies, muffins, rolls, doughnuts, breakfast cereals and so on may receive an elevated dose in the diet. In conclusion, with regards to presence of ²²⁶ Ra in foodstuffs it is necessary to monitor regularly the activity of ²²⁶ Ra in foodstuffs including market and local foods.
Databáze:	MEDLINE
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