Radioactive anomalies in a northeastern Brazilian town
- 1 June 1995
- journal article
- research article
- Published by Taylor & Francis in Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology
- Vol. 30 (5) , 989-999
- https://doi.org/10.1080/10934529509376245
Abstract
The Brazilian town of Santana do Matos is located in a region which is rich in granites and other pre‐Cambrian rocks. Radiological measurements performed in 43 dwellings by a hand‐held scintillometer, gave a mean value of 148 ± 44 nGy h‐1. Readings in downtown streets ranged from 200 to 330 nGy h‐1. Several radiocative anomalies with high γ‐background were also located in the surroundings of that town, where a value of 900 nGy h‐1 was recorded in a small cave used as a shelter by some shepherds. Concentrations of naturally occurring radionuclides in seven samples of building materials utilized at Santana do Matos, were determined by a gamma spectrometer. The following mean values were obtained: 226Ra: 40.1 Bq kg‐1; 232Th: 68.8 Bq kg‐1; 40K: 736 Bq kg‐1.Keywords
This publication has 4 references indexed in Scilit:
- Radon as a causative factor in induction of myeloid leukaemia and other cancersPublished by Elsevier ,1990
- Natural Radioactivity of Australian Building Materials, Industrial Wastes and By-productsHealth Physics, 1985
- DRINKING WATER AND CANCER INCIDENCE IN IOWAAmerican Journal of Epidemiology, 1982
- In Situ Ge(Li) And Nai(Tl) Gamma-Ray Spectrometry.Published by Office of Scientific and Technical Information (OSTI) ,1972