skip to main content

Title: Traces of natural radionuclides in animal food

Naturally occurring radioactive materials are present everywhere, e.g., in soil, air, housing materials, food, etc. Therefore, human beings and animals receive internal exposure from radioactive elements inside their bodies through breathing and alimentation. Gamma radiation has enough energy to remove an electron from the atom and compromise the rearrangement of electrons in the search for a more stable configuration which can disturb molecule chemical bonding. Food ingestion is one of the most common forms of radioisotopes absorption. The goal of this work is the measurement of natural gamma radiation rates from natural radioisotopes present in animal food. To determine the concentration of natural radionuclides present in animal food gamma-ray spectrometry was applied. We have prepared animal food samples for poultry, fish, dogs, cats and cattle. The two highest total ingestion effective doses observed refers to a sample of mineral salt cattle, 95.3(15) μSv/year, rabbit chow, with a value of 48(5) μSv/year, and cattle mineral salt, with a value of 69(7) μSv/year, while the annual total dose value from terrestrial intake radionuclide is of the order of 290 μSv/year.
Authors:
;  [1] ;  [2]
  1. Centro Universitário da FEI, São Bernardo do Campo (Brazil)
  2. Instituto de Física da USP, São Paulo (Brazil)
Publication Date:
OSTI Identifier:
22390460
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1625; Journal Issue: 1; Conference: 36. Brazilian Workshop on Nuclear Physics, Sao Sebastiao, SP (Brazil), 1-5 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; ABSORPTION; BACKGROUND RADIATION; BIOLOGICAL MATERIALS; CHEMICAL BONDS; CONCENTRATION RATIO; ECOLOGICAL CONCENTRATION; ELECTRONS; FOOD; GAMMA RADIATION; GAMMA SPECTROSCOPY; INGESTION; IRRADIATION; MOLECULES; NATURAL RADIOACTIVITY; RADIATION DOSES; RADIOACTIVE MATERIALS; RADIOISOTOPES; SALTS