Produção Nacional
Revisado por pares
Early thoron concentration levels in Guarapari: Dosimetric implications
2005; Elsevier BV; Linguagem: Inglês
10.1016/s1569-4860(04)07083-4
ISSN1569-4860
AutoresAnselmo Salles Paschoa, J. Pohl-Rülling,
Tópico(s)Geochemistry and Elemental Analysis
ResumoA study was undertaken in Guarapari that includes the measurements of external levels of environmental radiation on the overall area; external exposures of the general population, using thermoluminescent dosimeters; thoron in breath; chromosomal aberrations; and whole body counting selected workers of the now extinct monazite separation plant “Monazito e Ilmenito do Brasil (MIBRA),” that then processed about 20% of the total amount of monazite sands used annually to produce concentrates. This chapter also presents the studies of the natural radioactive environment in Brazil, including those made in Guarapari, was discussed in this chapter. Thoron concentration in the air of a now extinct monazite separation plant in Guarapari, Brazil, reached levels as high as 26 kBqm−3, while the plant was still in operation that would represent 80 times the current occupational standard.
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