Evaluation of Radon Exhalation from Vegetables with Estimation of the Lifetime Radiological Cancer Risk
摘要
The natural radioactivity levels in vegetable samples and the radon concentrations in 18 different types of vegetables collected from Bazyan location in Kurdistan Iraqi region were determined. CR-39 detector with a PVC tube was used to record the tracks density of alpha particles emitted by radon from vegetable samples. The results showed that the concentration of radon released from vegetable samples ranged from highest value of 311 Bq m–3 in sample A12 (green peppers) to lowest value 9.8 Bq.m–3 in sample A10 (wild rocket) with the average concentration of 162 Bq m–3. The concentrations of radon released from vegetable samples were lower than the global permissible limit of the exposure to radon according to International Commission on Radiological Protection (ICRP) and International Atomic Energy Agency (IAEA), 200–800 Bq m–3, and lower than the limit in foods, 400 Bq m–3, according to ICRP. Thus, the samples studied pose no health risks.