Finland’s Radiation and Nuclear Safety Authority (STUK) says tiny amounts of radioactive iodine-131 were measured in the air Kotka, east of Helsinki in late January. The same isotope was then measured again last week north to Kajaani. The levels were very low, ranging from 0,7 to 1,6 micro-becquerel per cubic meter air, STUK says in a news release. From where the radioactivity is coming is still unknown. Radioactive iodine-131 has a half-life of only eight days so the measurements are proof of a rather recent release. The source could be a nuclear reactor, a facility producing isotopes for medical purposes or by releases from a nuclear weapons related test. Norway’s Radiation Protection Authority (NRPA) on Monday confirms detection of radioactive iodine also at several of the country’s air-measurement stations.
Barents Observer 26th Feb 2018 read more »