United States Nuclear Regulatory Commission - Protecting People and the Environment

Lanthanum-131

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-1312 D, all compounds except
those given for W
5E+4 1E+5 5E-5 2E-7 6E-4 6E-3
W, oxides and hydroxides - 2E+5 7E-5 2E-7 - -
Page Last Reviewed/Updated Thursday, July 25, 2013