Evaluation of annual committed effective doses to members of the public in Morocco due to 238U and 232Th in various food materials.
Uranium (238U) and thorium (232Th) concentrations were measured in different foods widely consumed in Morocco by using CR-39 and LR-115 type II solid state nuclear track detectors (SSNTDs). Annual committed effective doses due to 238U and 232Th intakes from the ingestion of the studied food materials were evaluated for different age groups of individuals, using the ICRP ingestion dose coefficients. The influence of the 238U and 232Th intakes and ages of individuals on the committed effective dose was investigated. Total annual intakes of 238U and 232Th for a typical food basket for adult members of the Moroccan population were estimated to be 451 +/- 27 Bq y(-1) and 359 +/- 20 Bq y(-1), corresponding to committed effective doses of (20 +/- 1) x 10(-6) Sv y(-1) and (83 +/- 5) x 10(-6) Sv y(-1), respectively.
Misdaq
M A
MA
Nuclear Physics and Techniques Laboratory, Faculty of Sciences Semlalia, BP 2390, University Cadi Ayyad, Marrakech, Morocco. misdaq@ucam.ac.ma
Bourzik
W
W
D005507:Food Contamination, Radioactive / Q000032:analysis*; D006801:Humans; D009018:Morocco; D013910:Thorium / Q000032:analysis*; D014501:Uranium / Q000032:analysis*
D014501:Uranium; D013910:Thorium