Banca de DEFESA: BRUNO CÉSAR DIAS DE ALBUQUERQUE

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : BRUNO CÉSAR DIAS DE ALBUQUERQUE
DATE: 24/02/2022
TIME: 08:30
LOCAL: Vídeo Conferência
TITLE:

NATURAL RADIOACTIVITY: LEGAL AND NORMATIVE INSTRUMENTS IN BRAZIL AND INTERACTIONS OF OUTDOOR RADON WITH MICROMETEOROLOGICAL VARIABLES ON THE BORBOREMA PLATEAU

KEY WORDS:

²²²Rn concentration. Micrometeorological variables. Natural radioactivity. Monitoring. Environmental legislation. Borborema Plateau. Multiple linear regression. Systematic mapping

PAGES: 120
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

Radon is a colorless and odorless radioactive gas, the heaviest of all noble gases of natural origin. Rocks and soils with high concentrations of Uranium and Thorium are the main sources of Radon. Water, especially underground water that is in direct contact and confined between soils and rocks, can also contain high levels of Radon. Research has proven its carcinogenic power. Other studies try to establish relations between aspects that can influence the diffusion of the gas into the Atmosphere. In Brazil the theme is little researched and in terms of legislation it is restricted to the exploration of Uranium and Nuclear Energy. The main objectives of the research are to evaluate if the micrometeorological variables and the variation of photosynthetically active vegetation biomass explain the pattern of Radon emission, in different climatic periods, and to evaluate how the Brazilian legislation, and environmental norms approach Natural Radioactivity in different geochemical compartments aiming to suggest aspects to foment prevention, monitoring and mitigation policies. Through bibliographic and documental research, where systematic mapping methodology for environmental sciences will be used. And also field measurements and collection of soil and rocks in the municipalities of Bananeiras/PB and Cuité/PB located in the State of Paraíba, with application of statistical model, and vegetation analysis through vegetation indices. The mapping showed that the Brazilian legislation is incipient regarding natural radioactivity. It was evident that the view on radioactivity considers basically the aspects that may be related to anthropic activities, leaving gaps in relation to the radioactivity present in environmental compartments, independent of human interference. It is suggested that a position be taken in Brazil, following the example of the legislation of the countries with a history in this matter, in order to establish means to subsidize a National Plan of Actions and Monitoring of Natural Radioactivity. The behavior of Radon can indeed be influenced by micrometeorological factors, but the data showed that apparently the power of influence is only punctual. The analysis of vegetation through NDVI did not show the influence of vegetation. Apparently, the analyzed features are not able to overlap, at least for the studied areas, the background radioactivity profile for each locality.

BANKING MEMBERS:
Externa à Instituição - ANA KEULY LUZ BEZERRA - UFPI
Externa à Instituição - NATHALIE BARBOSA REIS MONTEIRO - UPM
Interno - 2966354 - DIOGENES FELIX DA SILVA COSTA
Externo ao Programa - 2042352 - FREDERICO CASTRO JOBIM VILALVA
Presidente - 1298966 - RAQUEL FRANCO DE SOUZA