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‘This analysis did confirm the existence of the contamination but at very low levels - up to 10 becquerels per kilogram - in an area not normally accessed by members of the public,’ said a spokeswoman for Sepa.
Radon abundance is measured in terms of its radioactivity in becquerels per cubic metre of radon in air, written Bq m 3. 222 Rn, commonly referred to simply as radon, is the most discussed isotope.
Schools in the county had the highest average reading in the country of 153 becquerels, and one Kerry school had one of the highest readings in Ireland with more than 3800 becquerels per cubic metre being detected.
The NRPB has set an ‘action level’ of 200 becquerels where remedial measures should take place and the average radon level in British homes is 20 Bq/m3.
Information on demographic and lifestyle variables was compiled for each person by using a common format, and radon measurements were expressed in becquerels (radon disintegrations per second) per cubic metre of household air.
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