Natural radioactivity and external hazard index in Brazilian sands
| Autor: | V. A. P. Aguiar, Nilberto H. Medina, M. A. Guazzelli |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hydrology
Radionuclide ZIRCÃO Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health virus diseases Hazard index Pollution Analytical Chemistry Nuclear Energy and Engineering Monazite parasitic diseases Environmental science Radiology Nuclear Medicine and imaging geographic locations Spectroscopy Natural radioactivity Zircon |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | The distribution of natural radiation from Brazilian beach sands was studied using gamma-ray spectrometry. While in most of the regions studied the dose due to external exposure to gamma-rays, proceeding from natural terrestrial elements, are within the values 0.3 and 1.0 mSv/year, some sand samples from Bahia, Rio de Janeiro and Sao Paulo states present higher radioactivity levels due to the presence of monazite and zircon, exceeding the world average value for external exposure due to naturally occurring radionuclides. |
| Databáze: | OpenAIRE |
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