Isotopes that may contaminate crops Fallout may be made up of a hundred or more active isotopes but only a few of them are likely to be harmful as crop contaminants. Iodine. As 1311, it will be a major hazard for a few weeks after fallout arrives. Chamberlain & Chadwick (1953) showed that iodine gas is deposited on grass by diffusion. Chamberlain, Loutit, Martin & Russell (1955) note that, in f...

Measurements of fallout radioactivity in Greenland in 1977 are reported. Strontium-90 (and Cesium-137 in most cases) was determined in samples of precipitation, sea water, vegetation, animals, and drinking water. Estimates are given of the mean contents of 90Sr and 137Cs in the human diet in Greenland in 1977.

Previous investigations on the structure and growth of long bones have been made by many and varied techniques. As early as 1727 Hales first demonstrated experimentally by drilling holes to act as markers that in the growing bone the markers always remained at the same distance apart and that there was therefore no interstitial growth. This has been subsequently confirmed by many workers using ...

During 1997-2007 we studied distribution and dynamics of main radionuclides and their biological significance in lake ecosystems within the 10-km inner exclusion zone around the destroyed unit of the Chernobyl nuclear power plant. The main objects of our studies were bottom sediments, water, seston, and different species of hydrobionts from Azbuchin Lake, Dalekoye-1 Lake and Glubokoye Lake. Sel...