Articles | Volume 17, issue 7
https://doi.org/10.5194/amt-17-2055-2024
https://doi.org/10.5194/amt-17-2055-2024
Research article
 | 
11 Apr 2024
Research article |  | 11 Apr 2024

Two new 222Rn emanation sources – a comparison study

Tanita J. Ballé, Stefan Röttger, Florian Mertes, Anja Honig, Petr Kovar, Petr P. S. Otáhal, and Annette Röttger

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Cited articles

Čeliković, I., Pantelić, G., Vukanac, I., Nikolić, J. K., Živanović, M., Cinelli, G., Gruber, V., Baumann, S., Poncela, L. S. Q., and Rabago, D.: Outdoor Radon as a Tool to Estimate Radon Priority Areas – A Literature Overview, Int. J. Environ. Res. Pub. He., 19, 662, https://doi.org/10.3390/ijerph19020662, 2022.​​​​​​​ 
Cinelli, G., Tollefsen, T., Bossew, P., Gruber, V., Bogucarskis, K., De Felice, L., and De Cort, M.: Digital version of the European Atlas of natural radiation, J. Environ. Radioact., 196, 240–252, https://doi.org/10.1016/j.jenvrad.2018.02.008, 2018. 
Fialova, E., Otahal, P. P. S., Vosahlik, J., and Mazanova, M.: Equipment for testing measuring devices at a low-level radon activity concentration, Int. J. Environ. Res. Pub. He., 17, 1904, https://doi.org/10.3390/ijerph17061904, 2020. 
Grexová, K., Sosnová, D., and Sochor, V.: CMI's Certificate No. 882/21 of the radionuclide Ra-226 standard No. 221121-221455, 2021.​​​​​​​ 
Grossi, C., Vogel, F. R., Curcoll, R., Àgueda, A., Vargas, A., Rodó, X., and Morguí, J.-A.: Study of the daily and seasonal atmospheric CH4 mixing ratio variability in a rural Spanish region using 222Rn tracer, Atmos. Chem. Phys., 18, 5847–5860, https://doi.org/10.5194/acp-18-5847-2018, 2018. 
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Short summary
Over 50 % of naturally occurring radiation exposure is due to 222Rn (progenies), but traceability of measurements to the International System of Units (SI) is lacking. To address this, two new 222Rn sources were developed to be used as calibration standards for reference instruments. These sources were investigated by comparing their estimated calibration factors for one instrument. Despite the small differences derived, all uncertainties are well within the intended target uncertainty of 10 %.