ENVIRONMENTAL RADIOACTIVITY LABORATORY
INRASTES, NCSR “Demokritos”, Athens, Greece

RADIATION PROTECTION, RADIOECOLOGY, AEROSOL SCIENCE
Research ... Scientific and Technological Services

Research

Home  … Methods … Research … Publications … Info … Contacts

INFO
Dose conversion factors

The values in black refer to whole-body dose equivalents, while those in light blue refer to thyroid doses. 
Radionuclide Half-life Decay const.
s-1		 Dose per ingestion
      unit, μSv per kBq      		 Dose per inhalation
unit, μSv per kBq		 Dose per deposition
unit, μSv per kBq m-2
Infant Child Adult Infant Child Adult 1st week 1st year
Kr85 10.7 a 2.05 E-09                
Kr85m 4.48 h 4.30 E-05                
Kr87 1.27 h 1.52 E-04                
Kr88 2.84 h 6.78 E-05                
Sr89 50.5 d 1.59E-07 15 5.2 2.2 12 3.9 1.6    
Sr90 29.1 a 7.55E-10 120 46 33 210 81 57    
Zr95 64.0 d 1.25 E-07 5 1.9 0.92 29 11 5.9 0.37 9.1
Nb95 35.2 d 2.28 E-07             0.35 2.7
Ru103 39.3 d 2.04 E-07 4.3 1.6 0.74 13 4.6 2.1 0.23 2
Ru106 368. d 2.18 E-08 40 13 5.8 780 260 120 0.1 3.7
Te132 3.26 d 2.46 E-06       480 130 42 0.64 0.84
I131 8.04 d 9.98 E-07 3700 1200 440 2300 740 210 0.16 0.36
I132 2.30 h 8.37 E-05 860 230   16 4.2 1.6 0.022 0.022
I133 20.8 h 9.25 E-06       460 120 44 0.058 0.06
I135 6.61 h 2.91 E-05       78 21 7.6 0.05 0.05
Xe133 5.25 d 1.53 E-06                
Xe135 9.09 h 2.12 E-05                
Cs134 2.06 a 1.07 E-08 17 17 17 11 11 11 0.77 32
Cs137 30.0 a 7.32 E-10 13 12 12 9.1 8 7.7 0.28 14
Ba140 12.7 d 6.32 E-07       5.9 2.1 0.96 0.67 2.9
La140 1.68 d 4.77 E-06                
Ce144 285. d 2.81 E-08 37 13 5.4 610 200 95 0.027 0.89
Np239 2.36 d 3.40 E-06       4 1.4 0.6 0.05 0.057
Pu238 87.7 a 2.51 E-10 49 20 13 190000 98000 75000 9.9 E-5 4.6 E-3
Pu239 24100 a 9.12 E-13 47 21 14 190000 100000 80000 6.4 E-5 3.1 E-3
Pu240 6500 a 3.38 E-12 47 21 14 190000 100000 80000 9.8 E-5 4.6 E-3
Pu241 14.4 a 1.53 E-09 0.39 0.24 0.21 1900 1400 1300 2.1 E-6 5.9 E-4
Am241 432. a 5.09 E-11 1900 1100 980 240000 130000 120000 0.011 0.55
Cm242 163. d 4.92 E-08 180 63 30 28000 9400 4500 1.2 E-4 2.9 E-3
Cm244 18.1 a 1.21 E-09 1400 660 540 180000 83000 65000 1.8 E-4 8.6 E-3