United States Nuclear Regulatory Commission - Protecting People and the Environment

Lanthanum-137

Atomic
No.
Radionuclide Class Table 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1 Col. 2 Col. 3 Col. 1 Col. 2
Oral
Ingestion
ALI
(µCi)
Inhalation Air
(µCi/ml)
Water
(µCi/ml)
Monthly
Average
Concentration
(µCi/ml)
ALI
(µCi)
DAC
(µCi/ml)
57 Lanthanum-137 D, see 131La 1E+4 6E+1
Liver
3E-8 - 2E-4 2E-3
- (7E+1) - 1E-10 - -
W, see 131La - 3E+2
Liver
1E-7 - - -
- (3E+2) - 4E-10 - -
Page Last Reviewed/Updated Thursday, July 10, 2014