Abstract
This work was concerned with study the contamination and concentration of natural and man-made radioactivity 40K, 137Cs, 214Bi (238U series) and 228Ac (232Th series) in 19 different imported foodstuffs canned samples (Mushrooms, Black Olives, Broad Beans, Peaches, Sweet Corn, Tomato Past, Green Peas, Chick Peas, Baby milk 1,2,3 and Full milk powder) , were collected from locally markets in different regions in Baghdad city. Samples were analyzed by high-purity germanium (HPGe) detector gamma spectrometer systems from Canberra, with high resolution (2.0 keV at 1332 keV) and relative efficiency of ~30% for 137Cs (661.7 keV) and provide (Software Genie 2000 from Canberra). From the data obtained, the activity concentrations (Bq/kg or Bq/l) for 40K, 137Cs, 214Bi and 228Ac in above foodstuff samples were measured. It was found that these values lie within the worldwide range for radioactivity in food. The mean value of radium equivalent activity (Raeq) in all samples it was below the threshold value of 370 Bq/kg. The all value of indoor and outdoor annual effective dose equivalent in samples it was lower than the world average values (0.45 mSv/y for indoor and 0.07 mSv/y for outdoor).
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