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CALCIUM - 45
(45Ca)
| Physical Half-life: | 162.7 days |
| Radiations: | -ß256.7
keV |
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| External Exposure: |
Slight external hazard.
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| Biological Data: |
ALI | 2 mCi (ingestion), 0.08
mCi (inhalation) |
| Biological half-life |
45 years |
| Effective half-life |
162.7 days |
| Critical Organs |
Whole Body and Bone |
| Bioassay |
Urinalysis (Not routinely done) |
| Shielding: |
Plexiglass is recommended.
Range of ß in air is 20" and 0.02" in lucite. |
Monitoring
& Efficiency |
LSC (Eff. ~90%)
Thin-window GM (Eff. ~20%) |
Special Considerations
- No additional shielding is needed. It is normally provided with the
solution and the apparatus being used.
- The 256.7 keV ß's are able to penetrate the gloves and the
outer layer of skin. Monitor your gloves frequently when working.
- Wear a radiation badge when handling 1.0 mCi or more vials.
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