REPUBLIKA.CO.ID, HELSINKI -- Radiation and Nuclear Safety Authority of Finland (STUK) has detected a small amount of radioactive substances in the air in the Finnish capital of Helsinki, reported Finnish daily Helsingin Sanomat on Wednesday.
The abnormal amount of radioactive substances, including manganese (Mn-54), cobalt (Co-60), and cesium (Cs-134 and Cs-137), were found in early October in samples collected from the city by a STUK's monitoring station located in northern part of Helsinki.
The measured quantities of the substances were so small that they have no effect on human health. However, the finding is so rare that it requires further investigation, said the daily.
Tarja K. Ikaheimonen, research director from STUK, told Helsingin Sanomat that the detection of the radioactive materials indicate that they should be derived from a nuclear reactor.
Such radioactive materials have not been found in other places, and the origin of them is unclear due to lack of information, according to Ikaheimonen. What has been known at the moment is that the wind blew from the north, when the substances were discovered, she added.
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