Reply to post: Estimate of leaked I-131 mass

Estimate of leaked I-131 mass

1 Bq = 1 nucleus decays per second. So ~500kmx500kmx1000mx 5µBq/m³ and the halftime of 8.0197 days gives the leak as 1.73x10¹⁵ atoms = 0.377 microgram. The leak was in the order of micrograms.