Dissolution rate and radiation dosimetry of metal tritides
- Sandia National Labs., Albuquerque, NM (United States)
- Inhalation Toxicology Research Inst., Albuquerque, NM (United States)
Metal tritides including titanium tritide (Ti{sup 3}H{sub x}) and erbium tritide (Er{sup 3}H{sub x}) have been used as components of neutron generators. These compounds can be released to the air as aerosols during fabrication, assembling and testing of components or in accidental or fugitive releases. As a result, workers could be exposed to these compounds by inhalation. A joint research project between SNL and ITRI (Inhalation Toxicology Research Institute) was initiated last fall to investigate the solubility of metal tritides, retention and translocation of inhaled particles and internal dosimetry of metal tritides. The current understanding of metal tritides and their radiation dosimetry for internal exposure are very limited. There is no provision in the ICRP-30 for tritium dosimetry in metal tritide form. However, a few papers in the literature suggested that the solubility of metal tritide could be low. The current radiation protection guidelines for metal tritide particles are based on the assumption that the biological behavior is similar to tritiated water which behaves like body fluid with a relative short biological half life (10 days). If the solubility of metal tritide is low, the biological half life of metal tritide particles and the dosimetry of inhalation exposure to these particles could be quite different from tritiated water. This would have major implications in current radiation protection guidelines for metal tritides Including annual limits of intakes and derived air concentrations. The preliminary results of metal tritide dissolution study at ITRI indicate that the solubility of titanium tritide is low. The outlines of the project, the preliminary results and future work will be discussed in presentation.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States); Inhalation Toxicology Research Inst., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789; AC04-76EV01013
- OSTI ID:
- 10165823
- Report Number(s):
- SAND-93-0761C; CONF-9303187-1; CONF-9310101-1; ON: DE93015023
- Resource Relation:
- Conference: DOE radiation protection workshop,Las Vegas, NV (United States); Beijing (China),Mar 1993; 18-22 Oct 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HYDROGEN TRITIDE
RADIONUCLIDE KINETICS
DISSOLUTION
TITANIUM COMPOUNDS
ERBIUM COMPOUNDS
INHALATION
DOSIMETRY
RADIATION PROTECTION
NEUTRON GENERATORS
RADIOACTIVE AEROSOLS
SOLUBILITY
RESPIRATORY TRACT CELLS
PARTICLE SIZE
560160
RADIONUCLIDE EFFECTS, KINETICS, AND TOXICOLOGY