NguyÔn ViÖt Hïng, Lª Kh¸nh Phån, Vâ Ngäc Anh.

Radioactive infiltration into water and human body, especially uranium radioactive substances, depends on radioactive nature and active intensity. In the areas of radioactive anomalies of uranium nature, there is possibly the pollution of water source and the level of infiltration of radioactive substances into human body from 5 to 9 times higher than the areas having no anomaly, and from 2 to 3 times higher than the areas of thorium nature anomaly.