Elfer Arenas

Instituto Peruano de Energía Nuclear · Unidad de Contaminacion Ambiental (Servicios Generales)

Humans have always been exposed to different types of natural and cosmic radiation. At present we experience 83 % natural radiation, for example from granite marbles, building materials such as concrete, brick, granite, or drywall. However, although these are potential sources of radon, they are rarely the cause of a high level of pollution in a bu...