Natural Radiation from Soil using Gamma-Ray Spectrometry

Journal Article · Wed Jun 03 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3157799· OSTI ID:21316760

Silveira, M A. G.; Moreira, R H; Medina, N H ^[1]

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1. Instituto de Fisica da Universidade de Sao Paulo, Sao Paulo (Brazil)

We have studied the distribution of natural radioactivity in the soil of Interlagos, in Sao Paulo city and Billings Reservoir, in Sao Bernardo do Campo, Sao Paulo, Brazil. The main contribution of the effective radiation dose is due to the elements of the {sup 238}Th decay series, with smaller contributions from {sup 40}K and the elements of the series of {sup 238}U. The results indicate the dose in all of the studied areas is around the average international dose due to external exposure to gamma rays (0.48 mSv/yr) proceeding from natural terrestrial elements.

• OSTI ID: 21316760
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1139; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
BRAZIL
DAUGHTER PRODUCTS
GAMMA RADIATION
GAMMA SPECTROSCOPY
MULTI-ELEMENT ANALYSIS
NATURAL RADIOACTIVITY
POTASSIUM 40
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION DOSES
SOILS
THORIUM 238
URANIUM 238
URBAN AREAS