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ORIGINAL ARTICLE
Year : 2015  |  Volume : 38  |  Issue : 1  |  Page : 29-34

226Ra, 228Ra, and 40K activity concentration in some vegetables consumed in Jordan, and resultant annual ingestion effective dose


1 Department of Coastal Environment, Faculty of Marine Sciences, University of Jordan, Aqaba, Jordan
2 Department of Physics, Hashemite University, Zarqa, Jordan
3 Department of Physics and Material Sciences, American University of Madaba, Jordan
4 Department of Physics, Islamic University in Madinah, Medina, Saudi Arabia

Correspondence Address:
Jamal AI-Jundi
Department of Physics, Islamic University in Madinah, Medina
Saudi Arabia
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Source of Support: Nil., Conflict of Interest: None


DOI: 10.4103/0972-0464.162819

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The activity concentrations of the naturally occurring nuclides 226Ra, 228Ra, and 40K were determined in vegetable crops largely consumed by people in Jordan. Samples of potatoes, tomatoes, cucumber, radish, spinach, and cabbage were collected from several markets in the capital Amman. The activity concentrations in Bq/kg of 226Ra, 228Ra and 40K were measured by the gamma-ray spectroscopy using the high purity germanium detector. The ranges of the activity concentration of 226Ra, 228Ra and 40K in the chosen vegetables were found to be 7.1–11.7 Bq/kg, nondetectable - 3.3 Bq/kg, and 201–684 Bq/kg, respectively. The daily intake of 40K was the highest among the radioisotopes measured, but it was lower than the intake in other countries. The estimated total annual effective dose resulting from the ingestion of the above-mentioned vegetable samples is 51.56 µSv/y according to the measured activity concentration of 226Ra, 228Ra, and 40K. 226Ra was the highest contributor to the total annual effective dose (23.98 μSv/y).


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