Prenatal exposure due to ingestion of natural radionuclides

摘要

This paper is devoted to exposure of the embryo and the foetus due to ingestion of natural radionuclides by the mother. Using the dose coefficients of ICRP Recommendation 88, an assessment is made of the activities of the main natural radionuclides and depleted uranium ingested acutely or chronically by the mother or future mother at different stages of pregnancy and before conception, which give an effective dose of 1 mSv to the offspring. Results show that, in particular, chronic intake of some natural radionuclides in the diet could be of concern for the offspring.