Fermium - Toxicity

Toxicity

Although few people come in contact with fermium, the International Commission on Radiological Protection has set annual exposure limits for the two most stable isotopes. For fermium-253, the ingestion limit was set at 107 Becquerels (1 Bq is equivalent to one decay per second), and the inhalation limit at 105 Bq; for fermium-257, at 105 Bq and 4000 Bq respectively.