Measurement of ²³⁸U, ²³²Th and ²²²Rn concentrations in different table oils samples. Determination of committed effective doses received by consumers following the ingestion of table oil.

The main objective of our work is to measure ²³⁸U, ²³²Th, ²²²Rn and ²²⁰Rn in different table oil samples using a method based on the use of two types of solid nuclear track detectors: CR- 39 and LR-115 II in order to determine the doses of radiation received by the individuals following ingestion of the samples of table oil studied. Indeed, we have developed an original method based on the determination of the detection efficiencies of CR-39 and LR-115 II solid nuclear track detectors for alpha particles emitted from the uranium 238 and thorium 232 series to evaluate ²³⁸U, ²³²Th, ²²²Rn and ²²⁰Rn concentrations in different table oil samples. We were able to determine doses of radiation due to ²³⁸U, ²³²Th and ²²²Rn received by individuals of the Moroccan, French, Italy, Spain and Tunisia populations following the ingestion of table oil.

The effective doses committed due to ²³⁸U, ²³²Th, and ²²²Rn following the ingestion of the table oil by the consumers were determined. The maximum total committed effective dose was found equal to (10±0.7) µSv·y⁻¹ of the Moroccan population, (11.6±0.7) µSv·y⁻¹ of the French population, (10.3±0.7) µSv.y⁻¹ of the Italian population, (10.4±0.5) µSv·y⁻¹ of the Spanish population and (10.5±0.7) µSv·y⁻¹ of the Tunisian population is much lower than the average dose given by the United Nations Scientific Committee on the Effects of Atomic Radiation [1] for ingestion (0.2 to 0.8 mSv·y⁻¹). The results obtained using our method are in very good agreement with those obtained using the model of the International Commission on Radiological Protection