Soil features and indoor radon concentration prediction: radon in soil gas, pedology, permeability and 226Ra content.
This work aims at relating some physicochemical features of soils and their use as a tool for prediction of indoor radon concentrations of the Metropolitan Region of Belo Horizonte (RMBH), Minas Gerais, Brazil. The measurements of soil gas radon concentrations were performed by using an AlphaGUARD monitor. The (226)Ra content analysis was performed by gamma spectrometry (high pure germanium) and permeabilities were performed by using the RADON-JOK permeameter. The GEORP indicator and soil radon index (RI) were also calculated. Approximately 53 % of the Perferric Red Latosols measurement site could be classified as 'high risk' (Swedish criteria). The Litholic Neosols presented the lowest radon concentration mean in soil gas. The Perferric Red Latosols presented significantly high radon concentration mean in soil gas (60.6 ± 8.7 kBq m(-3)), high indoor radon concentration, high RI, (226)Ra content and GEORP. The preliminary results may indicate an influence of iron formations present very close to the Perferric Red Latosols in the retention of uranium minerals.
Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6.627-Pampulha, Belo Horizonte 31270-901, Brazil evelise.lara@gmail.com.
E
E
Lara
Centro de Desenvolvimento da Tecnologia Nuclear, Comissão Nacional de Energia Nuclear, Av. Pres. Antônio Carlos, 6.627-Pampulha, Belo Horizonte 31270-901, Brazil.
Z
Z
Rocha
Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6.627-Pampulha, Belo Horizonte 31270-901, Brazil.
T O
TO
Santos
Centro de Desenvolvimento da Tecnologia Nuclear, Comissão Nacional de Energia Nuclear, Av. Pres. Antônio Carlos, 6.627-Pampulha, Belo Horizonte 31270-901, Brazil.
F J
FJ
Rios
Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6.627-Pampulha, Belo Horizonte 31270-901, Brazil.
A H
AH
Oliveira
D000396:Air Pollutants, Radioactive / Q000032:analysis / Q000737:chemistry; D016902:Air Pollution, Indoor / Q000032:analysis*; D000465:Algorithms; D001938:Brazil; D003198:Computer Simulation; D005740:Gases / Q000032:analysis / Q000737:chemistry*; D008956:Models, Chemical; D010539:Permeability; D011834:Radiation Monitoring / Q000379:methods*; D011886:Radon / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012987:Soil / Q000737:chemistry*; D012990:Soil Pollutants, Radioactive / Q000032:analysis* / Q000737:chemistry
D000396:Air Pollutants, Radioactive; D005740:Gases; D012987:Soil; D012990:Soil Pollutants, Radioactive; D011886:Radon