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Radiation Protection Dosimetry Advance Access published online on November 7, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp260
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

MEASUREMENT OF NATURAL AND ARTIFICIAL RADIOACTIVITY IN POWDERED MILK CONSUMED IN JORDAN AND ESTIMATES OF THE CORRESPONDING ANNUAL EFFECTIVE DOSE

Zaid Q. Ababneh1, Abdalmajeid M. Alyassin1, Khaled M. Aljarrah2 and Anas M. Ababneh1,*

1 Physics Department, Yarmouk University, Irbid 21163, Jordan
2 Physics Department, Jordan University of Science and Technology, Irbid 211-10, Jordan

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

Received August 16, 2009, amended October 5, 2009, accepted October 15, 2009

The activity concentrations of 40K, 226Ra, 228Ra and 137Cs were measured for 14 brands of the powdered milk consumed in Jordan, which are imported from various regions around the world. The activity concentrations of 40K were found not to vary greatly from one brand to the other with an average of 348 ± 26 Bq kg–1. However, the activity concentrations of 137Cs revealed a geographical distribution being: (i) undetected in any of the samples from Argentina, (ii) uniformly distributed in samples from Europe with an average of 0.43 ± 0.05 Bq kg–1, and (iii) widely varying in samples from New Zealand (from being not detected (ND) to 1.55 Bq kg–1). 226Ra and 228Ra were measured above the detection limits in five brands only and displayed relatively low activity concentrations of 0.50–2.14 and 0.78–1.28 Bq kg–1 for 226Ra and 228Ra, respectively. The total average annual effective doses due to intake of 40K, 226Ra, 228Ra and 137Cs from the ingestion of the powdered milk for infants, children and adults were estimated to be (in µSv): 332, 138 and 43, respectively. These results indicate no significant radiation dose to the public.


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