Zinc-65 in Foods

Abstract

Small quantities of Zn 65 have been found in a wide variety of foods obtained from the local markets serving Cincinnati, Ohio. The highest levels of radioactivity were observed in oysters harvested from Chesapeake Bay; however, none of the samples contained significant quantities of this radionuclide in terms of a potential radiological health hazard. In view of the widespread occurrence of Zn 65 in foods, it has been postulated that this radionuclide has been dispersed by high-altitude fallout.