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http://www.reuters.com/article/2011/03/22/us-japan-quake-ctbto-radiation-idUSTRE72L27820110322Tiny traces of Japan radiation spread to IcelandVIENNA/OSLO | Tue Mar 22, 2011 2:40pm EDT
VIENNA/OSLO (Reuters) - Minuscule numbers of radioactive particles believed to have come from Japan's crippled Fukushima nuclear power plant have been detected as far away as Iceland, officials said on Tuesday.
Traces of iodine-131, below levels of concern for human health, were discovered in an air filter used at a radiation monitoring center in Reykjavik at the weekend, the Icelandic Radiation Safety Authority (IRSA) said.
"We believe it comes from Japan," Sigurdur Emil Palsson, head of emergency preparedness at IRSA, told Reuters, confirming an earlier account by diplomatic sources in Vienna and marking the first detection in a European nation.
Iodine-131 had also been recorded in places including Newfoundland in Canada and the western United States, consistent with a spreading plume, he said. Iodine-131, linked to cancer if found in high doses, contaminates products such as milk and vegetables.
The Fukushima plant leaked radiation after it was crippled in the March 11 tsunami and earthquake.
"It's only a matter of days before it disperses in the entire northern hemisphere," said Andreas Stohl, a senior scientist at the Norwegian Institute for Air Research.
"Over Europe there would be no concern about human health."
Palsson added: "From a health aspect the focus is on Japan."
Earlier, the diplomatic sources said tiny traces were picked up in Iceland by a network of international monitoring stations as they spread eastwards with winds from Japan across the Pacific, North America and the Atlantic.
"They measure extremely small amounts," one Vienna-based diplomat said. "It has nothing to do with any health risks."
The Comprehensive Test Ban Treaty Organization (CTBTO), a Vienna-based U.N. body for monitoring possible breaches of the atom bomb test ban, has 63 stations worldwide for observing such particles, including one in Reykjavik, the Icelandic capital.
The CTBTO continuously provides data to its member states, but does not make the details public.
Another source said about 15 CTBTO stations had so far detected particles believed to originate from Fukushima.
"Reykjavik is the first in Europe," the source added.
