Thoron measurements in Hungary.
In this study, several Hungarian dwellings and working places were surveyed using passive radon- and thoron-measuring devices (Radopot(®) and Raduet(®)) from 2003 to 2008. The detectors were placed 15-30 cm from the wall throughout the 1- to 3-month period. In dwellings, the presence of thoron, ∼100 Bq m(-3), was detected almost in all cases, ; however, in the cellars of these buildings, a value ∼200 Bq m(-3) was typical. In the cases of manganese and bauxite mines, the concentration of thoron was mainly 200 and 500 Bq m(-3), respectively. In caves, it was 1000 Bq m(-3), whereas in the radon bath it was ∼100 Bq m(-3). As in many cases, the ratio between thoron and radon concentrations was >0.25 and the dose contribution from thoron and its progeny was not negligible. Therefore, further investigation on the thoron progeny will be necessary for an accurate dose estimation.
Institute of Radiochemistry and Radioecology, University of Pannonia, Egyetem str. 10, Veszprem, Hungary.
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D000396:Air Pollutants, Radioactive; D016902:Air Pollution, Indoor / Q000032:analysis*; D004781:Environmental Exposure; D006798:Housing; D006814:Hungary; D015233:Models, Statistical; D011834:Radiation Monitoring; D011874:Radiometry; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D012306:Risk
D000396:Air Pollutants, Radioactive; D017687:Radon Daughters; D011886:Radon