Hafnium-181

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	Table 3 Releases to Sewers
			Oral Ingestion ALI (µCi)	Inhalation		Air (µCi/ml)	Water (µCi/ml)	Monthly Average Concentration (µCi/ml)
			Oral Ingestion ALI (µCi)	ALI (µCi)	DAC (µCi/ml)	Air (µCi/ml)	Water (µCi/ml)	Monthly Average Concentration (µCi/ml)
72	Hafnium-181	D, see ¹⁷⁰Hf	1E+3	2E+2 Bone surf	7E-8	–	2E-5	2E-4
		D, see ¹⁷⁰Hf	–	(4E+2)	–	6E-10	–	–
		W, see ¹⁷⁰Hf	–	4E+2	2E-7	6E-10	–	–

Page Last Reviewed/Updated Wednesday, March 24, 2021