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[Content of thorium isotopes in human teeth]
Meditsinskaia Radiologiia
|September 1, 1984
Summary
Thorium (Th) isotope concentrations in human teeth across the RSFSR showed no significant age or geographic variations. The average ratio of 228Th to 232Th was 2.4, with a low annual radiation dose to bone tissue.
Area of Science:
- Environmental Science
- Radiochemistry
- Human Health
Context:
- Investigating Thorium (Th) isotope distribution in human dental tissues.
- Assessing potential health impacts of environmental radioactivity.
- Analyzing geographical and age-related variations in isotope concentrations.
Purpose:
- To determine the concentrations of Thorium (Th) isotopes (228Th and 232Th) in human teeth.
- To evaluate the statistical significance of differences in Th isotope levels across age groups and geographical regions within the RSFSR.
- To calculate the absorbed irradiation dose to osseous tissue from Th isotopes.
Summary:
- Thorium (Th) isotope concentrations, specifically 228Th and 232Th, were measured in teeth from individuals across three age groups and ten regions of the RSFSR.
- Statistical analysis revealed no significant differences in Th isotope content based on age or location.
- The average ratio of 228Th to 232Th concentrations was found to be 2.4 ± 0.9, and the total annual irradiation dose to bone tissue was 9.6 x 10^-6 Gy/year.
Impact:
- Provides baseline data on Thorium (Th) isotope distribution in a human population.
- Informs understanding of internal radiation exposure from environmental sources.
- Contributes to the assessment of long-term health risks associated with Thorium (Th) isotopes.