Wet deposition and soil content of Beryllium ? 7 in a micro-watershed of Minas Gerais (Brazil

MONTEIRO, ROBERTO; VALLADARES, D. L.; ESQUIVEL, ALEXANDER; DOS SANTOS, ANOMORA; MOREIRA, RUBENS; JURI AYUB, J.

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2017 vol. 169 p. 56 - 63

0265-931X

In this research the content of 7Be in soil, its seasonal variation throughout the year and its relationship with the rainfall regime in the Mato Frio creek micro-watershed was investigated, to assess its potential use in estimating soil erosion. The 7Be content in soil shows a marked variation throughout the year. Minimum 7Be values were observed in the dry season (from April to September) and were between 7 and 14 times higher in the rainy season (from October to March). The seasonal oscillations in 7Be soil content could be explained by the asymmetricrainfall regime. A highly linear relationship between rainfall amount and 7Be deposition was observed in rain water. A good agreement between 7Be soil content and 7Be atmospheric deposition was noticed, mainly in wet months. 7Be penetration in soil reaches a 5 cm depth, this could be explained by the soil type in the region.