Articles | Volume 17, issue 10
https://doi.org/10.5194/amt-17-3047-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-3047-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 May 2024
Research article |
| 21 May 2024
| 21 May 2024
Full characterization and calibration of a transfer standard monitor for atmospheric radon measurements
Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya, Barcelona, Spain
Claudia Grossi
Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya, Barcelona, Spain
Department of Physics, Universitat Politècnica de Catalunya, Barcelona, Spain
Stefan Röttger
Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
Arturo Vargas
Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya, Barcelona, Spain
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Cited articles
Arnold, D., Vargas, A., Vermeulen, A. T., Verheggen, B., and Seibert, P.: Analysis of radon origin by backward atmospheric transport modelling, Atmos. Environ., 44, 494–502, https://doi.org/10.1016/j.atmosenv.2009.11.003, 2010.
Baskaran, M.: Po-210 and Pb-210 as atmospheric tracers and global atmospheric Pb-210 fallout: a Review, J. Environ. Radioactiv., 102, 500–513, https://doi.org/10.1016/j.jenvrad.2010.10.007, 2011.
Baskaran, M.: Radon: A Tracer for Geological, Geophysical and Geochemical Studies, Springer, Cham, 167–188, https://doi.org/10.1007/978-3-319-21329-3, 2016.
BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPAP, and OIML: Evaluation of measurement data – Guide to the expression of uncertainty in measurement, https://www.bipm.org/documents/20126/2071204/JCGM_100_2008_E.pdf/cb0ef43f-baa5-11cf-3f85-4dcd86f77bd6 (last access: 1 March 2024), 2008.
Chambers, S., Williams, A. G., Zahorowski, W., Griffiths, A., and Crawford, J.: Separating remote fetch and local mixing influences on vertical radon measurements in the lower atmosphere, Tellus B, 63, 843–859, https://doi.org/10.1111/j.1600-0889.2011.00565.x, 2011.
Chambers, S., Williams, A., Griffiths, A., Podstawczyñska, A., Pawlak, W., and Fortuniak, K.: Characterizing the State of the Urban Surface Layer Using Radon-222, J. Geophys. Res., 124, 770–788, https://doi.org/10.1029/2018JD029507, 2019.
Chambers, S. D., Williams, A. G., Conen, F., Griffiths, A. D., Reimann, S., Steinbacher, M., Krummel, P. B., Steele, L. P., van der Schoot, M. V., Galbally, I. E., Molloy, S. B., and Barnes, J. E.: Towards a universal “Baseline” characterisation of air masses for high- and low-altitude observing stations using radon-222, Aerosol Air Qual. Res., 16, 885–899, https://doi.org/10.4209/aaqr.2015.06.0391, 2016.
Chambers, S. D., Griffiths, A. D., Williams, A. G., Sisoutham, O., Morosh, V., Röttger, S., Mertes, F., and Röttger, A.: Portable two-filter dual-flow-loop 222Rn detector: stand-alone monitor and calibration transfer device, Adv. Geosci., 57, 63–80, https://doi.org/10.5194/adgeo-57-63-2022, 2022.
COMSOL: Documentation for comsol release 5.1, COMSOL Multiphysics, Inc., MA, https://doc.comsol.com/6.2/docserver/#!/com.comsol.help.comsol/helpdesk/helpdesk.html (last access: 1 March 2024), 2015.
Conen, F. and Robertson, L. B.: Latitudinal distribution of radon-222 flux from continents, Tellus B, 54, 127–133, https://doi.org/10.3402/tellusb.v54i2.16653, 2002.
Curcoll Masanes, R., Grossi, C., and Vargas Drechsler, A.: Replication data for: Full characterization and calibration of a transfer standard monitor for atmospheric radon and thoron measurements, Version V1, CORA.Repositori de Dades de Recerca [data set/code], https://doi.org/10.34810/data893, 2024.
Dankelmann, V., Reineking, A., and Postendörfer, J.: Determination of Neutralisation Rates of 218Po Ions in Air, Radiat. Prot. Dosim., 94, 353–357, https://doi.org/10.1093/oxfordjournals.rpd.a006510, 2001.
Dersch, R. and Schötzig, U.: Production and measurement of 222Rn standards, Appl. Radiat. Isotopes, 49, 1171–1174, https://doi.org/10.1016/S0969-8043(97)10040-9, 1998.
Galmarini, S.: One year of 222Rn concentration in the atmospheric surface layer, Atmos. Chem. Phys., 6, 2865–2886, https://doi.org/10.5194/acp-6-2865-2006, 2006.
Goldstein, S. D. and Hopke, P. K.: Environmental Neutralization of Polonium-218, Environ. Sci. Technol., 19, 146–150, https://doi.org/10.1021/es00132a006, 1985.
Grossi, C.: 222Rn as a tracer for air mass transport characterization at 100-m-high tower in the south-west Spanish coast, PhD dissertation, http://www.tdx.cat/handle/10803/125236 (last access: 1 March 2024), 2012.
Grossi, C., Arnold, D., Adame, J. A., López-Coto, I., Bolívar, J. P., De La Morena, B. A., and Vargas, A.: Atmospheric 222Rn concentration and source term at El Arenosillo 100 m meteorological tower in southwest Spain, Radiat. Meas., 47, 149–162, https://doi.org/10.1016/j.radmeas.2011.11.006, 2012.
Grossi, C., Àgueda, A., Vogel, F. R., Vargas, A., Zimnoch, M., Wach, P., Martín, J. E., López-Coto, I., Bolívar, J. P., Morguí, J. A., and Rodó, X.: Analysis of ground-based 222Rn measurements over Spain: Filling the gap in southwestern Europe, J. Geophys. Res.-Atmos., 121, 11021–11037, https://doi.org/10.1002/2016JD025196, 2016.
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.
Grossi, C., Chambers, S. D., Llido, O., Vogel, F. R., Kazan, V., Capuana, A., Werczynski, S., Curcoll, R., Delmotte, M., Vargas, A., Morguí, J.-A., Levin, I., and Ramonet, M.: Intercomparison study of atmospheric 222Rn and 222Rn progeny monitors, Atmos. Meas. Tech., 13, 2241–2255, https://doi.org/10.5194/amt-13-2241-2020, 2020.
Gutiérrez-Álvarez, I., Guerrero, J. L., Martín, J. E., Adame, J. A., Vargas, A., and Bolívar, J. P.: Radon behavior investigation based on cluster analysis and atmospheric modelling, Atmos. Environ., 201, 50–61, https://doi.org/10.1016/j.atmosenv.2018.12.010, 2019.
Hernández-Ceballos, M. A., Vargas, A., Arnold, D., and Bolívar, J. P.: The role of mesoscale meteorology in modulating the 222Rn concentrations in Huelva (Spain) – impact of phosphogypsum piles, J. Environ. Radioactiv., 145, 1–9, https://doi.org/10.1016/j.jenvrad.2015.03.023, 2015.
Hirao, S., Yamazawa, H., and Moriizumi, J.: Estimation of the Global 222Rn Flux Density from the Earth's Surface, Japanese Journal of Health Physics, 45, 161–171, https://doi.org/10.5453/jhps.45.161, 2010.
Honig, A., Paul, A., Röttger, S., and Keyser, U.: Environmental control of the German radon reference chamber, Nucl. Instrum. Meth. A, 416, 525–530, https://doi.org/10.1016/S0168-9002(98)00788-8, 1998.
Hopke, P. K.: Use of Electrostatic Collection of 218Po for Measuring Rn, Health Phys., 57, 39–42, https://doi.org/10.1097/00004032-198907000-00005, 1989.
ICOS RI: ICOS Atmosphere Station Specifications V2.0, edited by: Laurent, O., ICOS ERIC, https://doi.org/10.18160/GK28-2188, 2020.
Jacob, D. J. and Prather, M. J.: Radon-222 as a test of convective transport in a general circulation model, Tellus B, 42, 118–134, https://doi.org/10.3402/tellusb.v42i1.15196, 1990.
Karstens, U., Schwingshackl, C., Schmithüsen, D., and Levin, I.: A process-based 222radon flux map for Europe and its comparison to long-term observations, Atmos. Chem. Phys., 15, 12845–12865, https://doi.org/10.5194/acp-15-12845-2015, 2015.
Levin, I., Glatzel-Mattheier, H., Marik, T., Cuntz, M., Schmidt, M., and Worthy, D. E.: Verification of German methane emission inventories and their recent changes based on atmospheric observations, J. Geophys. Res.-Atmos., 104, 3447–3456, https://doi.org/10.1029/1998JD100064, 1999.
Levin, I., Born, M., Cuntz, M., Langendörfer, U., Mantsch, S., Naegler, T., Schmidt, M., Varlagin, A., Verclas, S., and Wagenbach, D.: Observations of atmospheric variability and soil exhalation rate of radon-222 at a Russian forest site. Technical approach and deployment for boundary layer studies, Tellus B, 54, 462–475, https://doi.org/10.3402/tellusb.v54i5.16681, 2002.
Levin, I., Karstens, U., Hammer, S., DellaColetta, J., Maier, F., and Gachkivskyi, M.: Limitations of the radon tracer method (RTM) to estimate regional greenhouse gas (GHG) emissions – a case study for methane in Heidelberg, Atmos. Chem. Phys., 21, 17907–17926, https://doi.org/10.5194/acp-21-17907-2021, 2021.
Mertes, F., Röttger, S., and Röttger, A.: Development of 222Rn Emanation Sources with Integrated Quasi 2π Active Monitoring, Int. J. Env. Res. Pub. He., 19, 840, https://doi.org/10.3390/ijerph19020840, 2022.
Nazaroff, W. and Nero, A. V: Radon and its decay products in indoor air, John Wiley and Sons Inc, New York, NY, USA, ISBN 10: 0471628107/ISBN 13: 9780471628101, 1988.
ORTEC: MAESTRO v7.0 User's Manual, https://www.ortec-online.com/-/media/ametekortec/manuals/a/a65-mnl.pdf?la=en&revision=f2f3ed3f-fa2d-4185-9301-7d480b0a6955 (last access: 1 March 2024), 2012.
Pal, S., Lopez, M., Schmidt, M., Ramonet, M., Gibert, F., Xueref-Remy, I., and Ciais, P.: Investigation of the atmospheric boundary layer depth variability and its impact on the 222Rn concentration at a rural site in France, J. Geophys. Res.-Atmos., 120, 623–643, https://doi.org/10.1002/2014JD022322, 2015.
Pugliese, M., Baiano, G., Boiano, A., D'Onofrio, A., Roca, V., Sabbarese, C., and Vollaro, P.: A compact multiparameter acquisition system for radon concentration studies, Appl. Radiat. Isotopes, 53, 365–370, https://doi.org/10.1016/S0969-8043(00)00154-8, 2000.
Radulescu, I., Calin, M. R., Luca, A., Röttger, A., Grossi, C., Done, L., and Ioan, M. R.: Inter-comparison of commercial continuous radon monitors responses, Nucl. Instrum. Meth. A, 1021, 165927, https://doi.org/10.1016/j.nima.2021.165927, 2022.
Röttger, A., Röttger, S., Grossi, C., Vargas, A., Curcoll, R., Otáhal, P., Hernández-Ceballos, M. Á., Cinelli, G., Chambers, S., Barbosa, S. A., Ioan, M., Radulescu, I., Kikaj, D., Chung, E., Arnold, T., Yver-Kwok, C., Fuente, M., Mertes, F., and Morosh, V.: New metrology for radon at the environmental level, Meas. Sci. Technol., 32, 124008, https://doi.org/10.1088/1361-6501/ac298d, 2021.
Röttger, S., Röttger, A., Mertes, F., Morosch, V., Ballé, T., and Chambers, S.: Evolution of traceable radon emanation sources from MBq to few Bq, Appl. Radiat. Isotopes, 196, 110726, https://doi.org/10.1016/j.apradiso.2023.110726, 2023.
Schery, S. D. and Huang, S.: An estimate of the global distribution of radon emissions from the ocean, Geophys. Res. Lett., 31, L19104, https://doi.org/10.1029/2004GL021051, 2004.
Schmidt, M., Graul, R., Sartorius, H., and Levin, I.: Carbon dioxide and methane in continental Europe: a climatology, and 222Radon-based emission estimates, Tellus B, 48, 457–473, https://doi.org/10.3402/tellusb.v48i4.15926, 1996.
Schmithüsen, D., Chambers, S., Fischer, B., Gilge, S., Hatakka, J., Kazan, V., Neubert, R., Paatero, J., Ramonet, M., Schlosser, C., Schmid, S., Vermeulen, A., and Levin, I.: A European-wide 222radon and 222radon progeny comparison study, Atmos. Meas. Tech., 10, 1299–1312, https://doi.org/10.5194/amt-10-1299-2017, 2017.
Szegvary, T., Conen, F., and Ciais, P.: European 222Rn inventory for applied atmospheric studies, Atmos. Environ., 43, 1536–1539, https://doi.org/10.1016/j.atmosenv.2008.11.025, 2009.
Tositti, L., Pereira, E. B., Sandrini, S., Capra, D., Tubertini, O., and Bettoli, M. G.: Assessment of Summer Trends of Tropospheric Radon Isotopes in a Coastal Antarctic Station (Terra Nova Bay), Int. J. Environ. An. Ch., 82, 259–274, https://doi.org/10.1080/03067310290027767, 2002.
Vargas, A., Ortega, X., and Matarranz, J. L. M.: Traceability of radon-222 activity concentration in the radon chamber at the technical university of Catalonia (Spain), Nucl. Instrum. Meth. A, 526, 501–509, https://doi.org/10.1016/j.nima.2004.02.022, 2004.
Vargas, A., Arnold, D., Adame, J. A., Grossi, C., Hernández-Ceballos, M. A., and Bolivar, J. P.: Analysis of the vertical radon structure at the spanish “El arenosillo” tower station, J. Environ. Radioactiv., 139, 1–17, https://doi.org/10.1016/j.jenvrad.2014.09.018, 2015.
Vogel, F. R., Ishizawa, M., Chan, E., Chan, D., Hammer, S., Levin, I., and Worthy, D. E. J.: Regional non-CO2 greenhouse gas fluxes inferred from atmospheric measurements in Ontario, Canada, J. Integr. Environ. Sci., 9, 41–55, https://doi.org/10.1080/1943815X.2012.691884, 2012.
Wada, A., Murayama, S., Kondo, H., Matsueda, H., Sawa, Y., and Tsuboi, K.: Development of a Compact and Sensitive Electrostatic Radon-222 Measuring System for Use in Atmospheric Observation, J. Meteorol. Soc. Jpn, Ser. II, 88, 123–134, https://doi.org/10.2151/jmsj.2010-202, 2010.
Wada, A., Matsueda, H., Murayama, S., Taguchi, S., Hirao, S., Yamazawa, H., Moriizumi, J., Tsuboi, K., Niwa, Y., and Sawa, Y.: Quantification of emission estimates of CO2, CH4 and CO for east asia derived from atmospheric radon-222 measurements over the western North Pacific, Tellus B, 65, 1–16, https://doi.org/10.3402/tellusb.v65i0.18037, 2013.
Whittlestone, S. and Zahorowski, W.: Baseline radon detectors for shipboard use: Development and deployment in the First Aerosol Characterization Experiment (ACE 1), J. Geophys. Res.-Atmos., 103, 16743–16751, https://doi.org/10.1029/98JD00687, 1998.
Williams, A. G., Chambers, S. D., Conen, F., Reimann, S., Hill, M., Griffiths, A. D., and Crawford, J.: Radon as a tracer of atmospheric influences on traffic-related air pollution in a small inland city, Tellus B, 68, 30967, https://doi.org/10.3402/tellusb.v68.30967, 2016.
Zahorowski, W., Chambers, S. D., and Henderson-Sellers, A.: Ground based radon-222 observations and their application to atmospheric studies, J. Environ. Radioactiv., 76, 3–33, https://doi.org/10.1016/j.jenvrad.2004.03.033, 2004.
Short summary
This paper presents a new user-friendly version of the Atmospheric Radon MONitor (ARMON). The efficiency of the instrument is of 0.0057 s-1, obtained using different techniques at Spanish and German chambers. The total calculated uncertainty of the ARMON for hourly radon concentrations above 5 Bq m-3 is lower than 10 % (k = 1). Results confirm that the ARMON is suitable to measure low-level radon activity concentrations and to be used as a transfer standard to calibrate in situ radon monitors.
This paper presents a new user-friendly version of the Atmospheric Radon MONitor (ARMON). The...
