Journal
FOOD AND CHEMICAL TOXICOLOGY
Volume 47, Issue 6, Pages 1205-1208Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2009.02.013
Keywords
Composite food; Radiometry; K-40; Annual ingestion dose; Cancer risk
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To determine radiological impact of composite food served at Pakistan Institute of Nuclear Science and Technology (PINSTECH) on its worker, cooked meals were collected during 2000-2007 and analysed by gamma and beta radiometry techniques for naturally occurring radionuclides and fission fragments. The only measurable radionuclide was naturally occurring K-40. Its activity range was 40 +/- 1.5 to 182.4 +/- 3.8 Bq kg(-1) with cumulative average value of 89.4 +/- 35.1 Bq kg(-1). Based on annual meals taken by the worker in cafeteria, the measured value gives committed effective dose of 74 mu Sv and estimated cancer risk factor of 1.5 x 10(-4) that is a minor fraction of the total risk of 5 x 10(-3). It depicts that food served at PINSTECH cafeteria is radiologically safe for consumption. (C) 2009 Elsevier Ltd. All rights reserved.
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