CHROMIUM - 51
|Physical Half-life: ||27.8 days
|Radiations:||Gamma/x320 (9.8%) & 5
External hazard when mCi quantities are present. Radiation exposures from
1.0 mCi are 6.4 mR/hr and 1.6 mR/hr at 5 cm & 10 cm, respectively.
||ALI ||40 mCi (ingestion), 52
||Lower Large Intestine and Kidneys|
||Urinalysis (Not routinely done)|
||HVL 1.7 cm of lead; TVL 5.6 cm of lead.
|LSC (Eff. ~30%)
NaI Gamma Counter (Eff. ~1-2%)
- Use forceps with rubber sleeves to handle unshielded sources and
potentially contaminated vessels and work at arms length.
- Always store 51Cr vials in lead containers or behind
- Wear a radiation badge when handling 1.0 mCi or more.