Environmental Radioactive Pollution Sources and Effects on Man El-Naggar, A M [Atomic Energy Authority, Cairo (Egypt)] 54 ENVIRONMENTAL SCIENCES; ENVIRONMENT; MAN; POLLUTION SOURCES; RADIATION DOSES; RADIOACTIVE WASTES; RADIOACTIVITY; RADIOISOTOPES; TERRESTRIAL ECOSYSTEMS The sources of environmental radioactivity are essentially the naturally occurring radionuclides in the earth,s crust and the cosmogenic radionuclides reaching the environmental ecosystems. The other sources of environmental radioactivity are the man made sources which result from the radioactive materials in human life. The naturally occurring environmental radioactivity is an integral component of the terrestrial and extraterrestrial creation, and therefore it is not considered a source of radioactive pollution to the environment. The radioactive waste from human activities is released into the environment, and its radionuclide content becomes incorporated into the different ecosystems. This results in a situation of environmental radioactive pollution. This review presents the main features of environmental radioactive pollution, the radionuclide behaviour in the ecosystems, pathway models of radionuclides in the body and the probability of associated health hazards. The dose effect relationship of internal radiation exposure and its quantitative aspects are considered because of their relevance to this subject. Atomic Energy Authority, Cairo (Egypt) Available from INIS in electronic form Egypt 1999-07-01 English Conference Conference: International conference on hazardous waste sources, effects and management, Cairo (Egypt), 12-16 Dec 1998; Other Information: PBD: 1999; Related Information: In: Proceedings of the international conference on hazardous waste sources, effects and management, 1555 pages. Medium: ED; Size: page(s) 259-274 https://doi.org/ [] INIS-EG-165(v.1,2,3) TRN: EG0000130026702 INIS; EDB-00:112346 2010-08-12 20065533 https://www.osti.gov/etdeweb/servlets/purl/20065533