CONCENTRAÇÃO DE Rn-222 E FILHOS EM ÁGUAS PROVENIENTES DE POÇOS E EMERGÊNCIAS DE ÁGUA DA REGIÃO DE PRESIDENTE PRUDENTE: RESULTADOS PRELIMINARES

This work presents the preliminary results about the concentration of radon and radon daughters in wells and springs water from Presidente Prudente. Six water samples were studied: three from well-water, two from springs water and one from poTabelale water. For the etermination of α-activity the samples were placed inside plastic containers where the CR-39 tracks detectors were outside the water. The track density of α-particles were measured by using optical microscopy. The results show that one sample from well-water presented higher concentration of radon and radon daughters than the other samples.