The influence of the disintegration of radon transported by the evapotranspiration of plants on the formation of atmospheric aerosols in an environment of continental and insular forests

This article presents the results on prospecting Radon, ionic agglomerates (+ and -) in some areas of the dune forest in the municipality of Parnamerim, state of Rio Grande do Norte and the Samambaia forest of Ilha Trindade. A summary of our research on the correlation of ionic particles in atmosphere of the continental (dune) and insular (Trindade Island) with the variation of the Radon content in the canopies, located respectively in the Northeast and Southeast of Brazil. Considering the half-life of Radon (3.8 days), the duration of the chosen data collection period was 5 days. As the climate in the interior of the Brazilian Northeast is very peculiar, there are no marked seasons when a lot of it resides in the 'rainy season' and in the 'dry season', which can last for years, due to this peculiarity, it was decided to take measurements in the 'dry season' and in case of sporadic rain only perform measurements after three days of drought. However, also given the peculiarity of the meteorological variation on the island of Trindade, Radon only occurred during periods of the week that did not rain for three days. The temperature and air turbulence usually peak during the middle of the afternoon and therefore both the concentration of radon and ion concentration are not expected to increase at this time. So, our conclusion is the same as [2], which attributes these peaks in the middle of the afternoon to the release of Radon into the atmosphere by evapotranspiration of the plant, which usually occurs in the afternoon. However, our results when compared to other regions present the maximum and minimum peaks of Rn and ion clusters with a certain delay throughout the day, due to the air temperature, which does not change during the day, and our Radon content is high in other regions. The fact t hat Radon is higher is due to geological influence. Since the bedrock of Parque florestal das Dunas - Natal consists of wind sands enriched with heavy minerals that contains uranium and thorium (monazite, alanite, epidote and thorianite) and the fern forest meet in phonolytics volcanic rocks, which have uranium dispersed in its matrix