| Autor: |
Umisedo, Nancy K., Okuno, Emico, Colacioppo, Sérgio, Medina, Nilberto H., Hiodo, Francisco Y. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 8/7/2008, Vol. 1034 Issue 1, p380-383, 4p, 3 Charts |
| Abstrakt: |
The transference of radionuclides from the fertilizers to/and from soils to the foodstuffs can represent an increment in the internal dose when the vegetables are consumed by the human beings. This work evaluates the contribution of fertilizers to the increase of radiation level in the environment and of dose to the people. Samples of fertilizers, soils and vegetables produced in farms located in the neighbourhood of São Paulo city in the State of São Paulo, Brazil were analysed through gamma spectroscopy. The values of specific activity of 40K, 238U and 232Th show that there is no significant transference of natural radionuclides from fertilizers to the final product of the food chain. The annual committed effective dose due to the ingestion of 40K contained in the group of consumed vegetables analysed in this work resulted in the very low value of 0.882 μSv. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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