Avaliação do risco radioativo por níveis de radônio-222 no ar de garimpos e ambientes internos de residências no Seridó paraibano.

Abstract

Human beings without their exhibited or exposed as natural sources of exposure, which include cosmic rays, cosmogenic radionuclides and mainly radionuclides and mainly radionuclides. Radon 2, specifically the 38U series decay product, has the highest2 is for dosimetry in watchful environments, on average, with nearly 54% of the world's exposure derived from natural radioactivity. When ingested and especially when inhaled, it may present a deterministic potential risk to living beings. In the Brazilian Northeast, more precisely in the Seridó of Paraíba, there is a predominance of pegmatitic geological formations, which contain occurrences of uranium and risk configuration due to the emanation of 222Rn. In this context, this research objectively evaluates the radioactive risk resulting from exposure to radon and exposure in indoor environments in the population in the eastern Seridó of Paraíba, with a strong influence of the analysis on its local economy. Monitoring was performed with the aid of passive dosimetry using an alpha detector, model Corentium Home. The experimental arrangement for measuring floor variation was defined in indoor environments for prolonged stay in places that have water points, bathroom and kitchen, always positioning the device at a floor height, 90 m < 1.50 m. Research has also been carried out in resource transport mines. At the same time, a lemma defining parameters and habits that can be correlated with the research results was applied. Descriptive statistical models were used for data processing and inference about the radiometrics of the municipalities. ² They were found in ²R of the eastern Seridó of Paraíba, but at low levels. The radioactive current from exposure to ²²²Rn in indoor environments in the population residing in Picuí and Nova Palmeira ranged from 0.0 to 31.82 Bq/m³, being a prognosis of the average of raon gas and its descendants five times lower than the maximum limit of 100 Bq/m³ stipulated by the WHO. It was verified that the rooms that used water in their internal environment, bathroom and kitchen, were verified in the ²²² R. The use of water in internal environments was identified as an indispensable variable in the analysis of radionium 222 indoors. With good and positive water sources for water sources, a strong presence of water was found, being a strong in the waters of Picuí-PB, being a new Palmeiras de Picuí-PB. In the other sources found, the ² was not verified with. The dosimetry, for the protection allowed for the study area at the background level, being less than the cancer limited to the UNSCEAR background. per 1 million people residing in the area for one year, below the world average of 170 to 230 per million people per year. With ²²²Rn in the air, it was possible to correlate with soccer-only cancer. In the eastern Seridó of Paraíba, all radiometrics indicated loss of miners, and this can be explained by the fact that they are miners and ventilated, without health risks.