Radiation Protection Dosimetry Advance Access originally published online on June 26, 2007
Radiation Protection Dosimetry 2008 128(2):254-257; doi:10.1093/rpd/ncm334
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Tritium in the urine in Finnish people
STUK—Radiation and Nuclear Safety Authority, PO Box 14, FIN-00881 Helsinki, Finland
* Corresponding author: marketta.puhakainen{at}stuk.fi
Received April 16, 2007, amended May 22, 2007, accepted May 27, 2007
Tritium in urine was analysed from 227 randomly selected Finnish adults. The people were 18 to 65 of age. Urine samples were collected over night. The mean activity concentration of tritiated water in urine was 2.5 Bq l–1 and the maximum activity concentration 18.3 Bq l–1. The minimum detectable activity varied from 1.5 to 2.3 Bq l–1. Because organically bound tritium is
10% of the total tritium, its concentration was below the detection limit and could be ignored. The mean effective dose for Finnish people from tritium was 2.4 x 10–3 µSv y–1.