Author: William A. Brungs Jr.

Publisher: Forgotten Books

Published: 2018-03-19

Total Pages: 68

ISBN-13: 9780364991268

Excerpt from Distribution of Cobalt 60, Zinc 65, Strontium 85, and Cesium 137 in a Freshwater Pond After 4 days, 10 percent of the cobalt 60, 6 percent Of the zinc 65, and 5 percent Of the cesium 137 remained in solution. Cobalt 60 and zinc 65 were associated principally with suspended solids, and cesium 137 with bottom sediments. In general, soft parts Of biota rapidly accumulated more radio nuclides than hard parts, but gradually lost radioactivity as radionuclide concentrations in the water decreased. Clam and snail shells and fish bone usually accumulated zinc 65 and strontium 85 until almost the end Of the experiment. More zinc 65 than any of the other test radionuclides was found in soft parts Of biota. Strontium 85 activities usually exceeded those of zinc 65 in shell and bone. Young clams and snails accumulated more zinc 65 and strontium 85 than did adult clams and snails. Strontium 85 concentrations in the soft parts Of clams were higher in the adults. The maximum Observed accumulation Of strontium 85 occurred in the crayfish exoskeleton. Maximum activities of the other test radionuclides were Observed in the tadpoles. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.