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Radiation Protection Dosimetry Advance Access originally published online on April 22, 2009
Radiation Protection Dosimetry 2009 134(1):30-37; doi:10.1093/rpd/ncp064
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Radioactivity concentrations in soil and vegetables from the northern Jordan Rift Valley and the corresponding dose estimates

Anas M. Ababneh*, Maisoun S. Masa'deh, Zaid Q. Ababneh, Mufeed A. Awawdeh and Abdalmajeid M. Alyassin

Physics Department, Yarmouk University, Irbid 21163, Jordan

* Corresponding author: ababneha{at}yu.edu.jo

Received January 27, 2009, amended March 18, 2009, accepted March 26, 2009

The Jordan Rift Valley (JRV) is considered the food bowl of Jordan, especially during the winter season. In this study, soil and vegetable samples collected from greenhouses in the northern JRV were analysed for their radioactive content. The activity concentrations of 238U, 235U, 232Th, 226Ra, 137Cs and 40K in soil were found to be (±SD) 33 ± 12, 2.2 ± 0.7, 11.2 ± 3.3, 40.5 ± 15.5, 3.5 ± 1.3 and 156.0 ± 46.6 (Bq kg–1), respectively. In vegetables, the activity concentration of 40K was found in the range of 698–1439 Bq kg–1, while those of 226Ra and 228Ra were found to be in the range of <0.61–2.56 and <0.69–3.35 Bq kg–1, respectively. Transfer factors for 40K were found to be high and ranged from 5 to 8, while those for 226Ra and 228Ra were found to be from <0.01 to 0.07 and from <0.09 to 0.42, respectively. The calculated external annual effective dose is found to be within the worldwide range.


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