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PHOSPHORUS - 33
(33P)
| Physical Half-life: | 25.3 days |
| Radiations: | -ß 249
keV |
|
| External Exposure: | Slight external hazard; 88 mR/hr
@ surface of 1 µCi/ml solution
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| Biological Data: |
ALI | 6 mCi(ingestion), 8
mCi(inhalation) |
| Biological half-life |
257 days |
| Effective half-life |
23 days |
| Critical Organs |
Bone and whole body |
| Bioassay |
Urinalysis (Not routinely done) |
| Shielding: |
Plexiglass recommended.
Range of ß in
air is 20' and 0.02" in lucite. |
Monitoring
& Efficiency: |
LSC (Eff. ~85%)
Thin-window GM (Eff. ~20%) |
Special Considerations
- Mild acids are good decontamination solutions; keep vinegar in your
lab.
- No additional shielding is needed; it is normally provided with the
solution and the apparatus being used.
- The 249 keV ßs 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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