United States Nuclear Regulatory Commission - Protecting People and the Environment

Iodine-125

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)
53 Iodine-125 D, all compounds 4E+1
Thyroid
6E+1
Thyroid
3E-8 - - -
(1E+2) (2E+2) - 3E-10 2E-6 2E-5
Page Last Reviewed/Updated Thursday, July 25, 2013