document: Japan &#039; s &#039; radioactive particles &#039; in Moscow RADIOACTIVITY from Japan 's damaged nuclear reactor has been detected in the atmosphere around the Russian capital Moscow , officials from the municipal facility treating nuclear waste said today . Radon , a company set up in Moscow to monitor radioactivity and dispose of radioactive waste in central Russia , has been detecting traces of iodine and strontium isotopes since last week , deputy director Oleg Polsky said . The minuscule amounts were possible to detect only via the company 's powerful filtering systems and do n't pose any health risks , he said . '' `` Starting March 23rd , we began registering activity , whose make-up corresponds to that which comes from accident situations on nuclear reactors , '' '' the company 's Sergei Gordeyev said . Detected isotopes include radioactive Iodine-131 in aerosol and gas form , cesium-134 and cesium-137 , and tellurium-132 , he said at a press conference in Moscow . Start of sidebar . Skip to end of sidebar . End of sidebar . Return to start of sidebar . '' `` The isotopes confirm that it 's a process connected with the accident , '' '' said Polsky , '' `` but these traces are not dangerous for people . '' '' The earthquake and tsunami that ravaged Japan 's northeast coast and left about 28,000 dead or missing also knocked out reactor cooling systems at the Fukushima plant , which has leaked radiation into the air and sea . Jitters continued throughout Asia this week that radiation had drifted over their territories , even though they emphasised the levels were so small there was no health risk . Traces of radioactive iodine believed to be from Japan 's damaged nuclear plant have even been detected as far afield as Britain , officials said on Tuesday .
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