Journal
RADIATION PROTECTION DOSIMETRY
Volume 134, Issue 1, Pages 30-37Publisher
OXFORD UNIV PRESS
DOI: 10.1093/rpd/ncp064
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Funding
- Deanship of Research and Graduate Studies at Yarmouk University
- Irbid [211-63]
- Jordan [11/2007]
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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 (238)U, (235)U, (232)Th, (226)Ra, (137)Cs and (40)K 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 (40)K was found in the range of 698-1439 Bq kg(-1), while those of (226)Ra and (228)Ra were found to be in the range of < 0.61-2.56 and < 0.69-3.35 Bq kg(-1), respectively. Transfer factors for (40)K were found to be high and ranged from 5 to 8, while those for (226)Ra and (228)Ra 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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