Abstract
Due to their low radioactivity background, underground salt mines spaces offer a unique possibility for speleotherapy use. The knowledge of radon concentration levels in such underground environments is essential for therapeutic purposes of different respiratory and rheumatic diseases. In order to develop speleotherapy in Romania, this paper presents the results of an indoor radon concentration levels survey in some salt mines in Romania. The survey was carried out using radon monitor Pylon AB-5 system methodology validated by a CIS-P5M system. In order to investigate whether differences in depth and microclimate parameters translate into significant differences in salt mine indoor radon concentrations, have been chosen three salts mine test sites placed in the Northern part of Romania (Turda, Cacica and Ocna Dej) in stable areas of the mining field at 32–120 m depth. Environmental microclimate conditions (mean values of air temperature 10–14.5 °C, air humidity 65–80%, air velocity 0.2 m/s saline aerosols and low microbial factors) have anti-bacterial, anti-microbial, and anti-inflammatory properties and recognized therapeutically effects on human body’s health. Air temperature is one of the most important factors which need to be considered when carrying out a survey of indoor radon concentrations in salt mines because temperature largely determines close spaces ventilation rates, and ventilation habits are known to have significant effects on indoor radon concentrations. The analyzed environmental conditions and recorded low levels of indoor mean radon concentration (6.9 ± 0.39 and 96.5 ± 4.76 Bq/m3) demonstrated the best suitability of the investigated three salt mines in Romania for speleotherapeutic applications.
Similar content being viewed by others
References
Vinson DS, Vengosh A, Hirschfeld D, Dwyer GS (2009) Relationships between radium and radon occurrence and hydrochemistry in fresh groundwater from fractured crystalline rocks, North Carolina (USA). Chem Geol 260:159–171
Aytekin H, Baldık R, Celebi N, Ataksor B, Tasdelen M, Kopuz G (2006) Radon measurements in the caves of Zonguldak (Turkey). Radiat Prot Dosim 118(1):117–121
Nenitescu C (1982) Inorganic chemistry. Didactic and Pedagogic Press, Bucharest (in Romanian)
Beamon S, Falkenbach A, Fainburg G, Linde K (2011) Speleotherapy for asthma. Cochrane Database Syst Rev 2:CD001741
Kavasi N, Somlai J, Kovacs T, Szabo T, Varhegyi A, Hakl J (2003) Occupational and patient doses in the therapeutic cave, Tapolca (Hungary). Radiat Prot Dosim 106(3):263–266
Calin MR, Calin MA (2010) Evaluation of the Radon concentration in Ocna Dej salt mine, Romania. J Radioanal Nucl Chem 286(1):169–173
Calin MR, Calin MA (2011) Investigations on the presence and distribution of Radon in the Cacica salt mine, Romania. J Radioanal Nucl Chem 288(1):203–206
Horvath T (1986) Speleotherapy: a special kind of climatotherapy, its role in respiratory rehabilitation. Disabil Rehabil 8(2):90–92
Visarion M, Polonic P, Ali Mehmed E (1976) Contributions to the study of the structural forms of the salt from the Transylvanian Depression. St Tehn Econ D (Prospecţiuni geofizice) 11:29–62, in Romanian
Marinescu F, Marunteanu M (1990) La paléogéographie au niveau du sel badénien en Roumanie. Geol Zentralbl Geol Carpath 41:49–58
Damijan Z, Kasprzak C (2010) Investigation of physical climate inside the lake Wessel Chamber. Acta Phys Pol A 118(1):31–34
Mera O, Stefanie T, Visinescu V (2010) Cetatea din muntele de sare, Turda, 1st edn. Turda, Romania. ISBN 978-973-0-07419-2
Calin MR. OSIM Patent No. 00375/2008. Detector tip camera de ionizare pentru masurarea radonului atmosferic in regim diferential (in Romanian)
UNSCEAR (2000) UNSCEAR 2000 report. Sources and effects of ionizing radiation. Report to the general assembly with scientific annexes. United Nations, New York
UNSCEAR (2008) UNSCEAR 2006 report. Effects of ionizing radiation. In: Annex E sources-to-effects assessment for radon in homes and workplaces, vol II. United Nations, New York
Liu CL, Zhao YJ, Li SS, Teng HJ, Wang ZM (2007) Influence of ventilation on the reduction of the radon concentration in an underground research facility. J Radioanal Nucl Chem 274(3):507–510
UNSCEAR Report (2006) ANNEX E: sources-to-effects assessment for radon in homes and workplaces. www.unscear.org/docs/reports/2006/09
Ishikawa T, Hosoda M, Sorimachi A, Tokonami S, Katoh S, Ogashiwa S (2011) Radiological characterization of commercially available “radon spa sources”. J Radioanal Nucl Chem 287(3):709–713
Nagy K, Kavasi N, Kocacs T, Somlai J (2008) Radon therapy and speleotherapy in Hungary. Press Therm Climat 154:219–225
U.S. Environmental Protection Agency (2009) EPA assessment of risks from radon in homes. EPA, Washington, 402-R-03-003. http://www.epa.gov/radon/pdfs/402-r-03-003.pdf
World Health Organization (2009) In: Zeeb H, Shannoun F (eds) WHO handbook on indoor radon: a public health perspective. World Health Organization, Geneva, pp 3–91
Becker K (2001) How much protection against radon do we need? Central Eur J Occup Environ Med 7(3-4):168–177
Somlai J, Kávási N, Szabó T, Várhegyi A, Kovács T (2007) The function of radon in curing respiratory diseases in the therapeutic cave of Tapolca. J Radioanal Nucl Chem 273(2):363–370
Abdullaev AA, Gadzhiev KM, Eiubova AA (1993) The efficacy of speleotherapy in salt mines in children with bronchial asthma based on the data from immediate and late observations. Vopr Kurortol Fizioter Lech Fiz Kult 5:25–28
Elkins MR, Robinson M, Rose BR et al (2006) A controlled trial of long-term inhaled hypertonic saline in patients with cystic fibrosis. N Engl J Med 354(3):229–240
Garavello W, Romagnoli M, Sordo L, Gaini RM, Oi Berardino C, Angrisano A (2003) Hypersaline nasal irrigation in children with symptomatic seasonal allergic rhinitis: A randomized study. Pediatr Allergy Immunol 14:140–143
Vagina NV, Fineburg GZ, Bachmetyev BA, Gervazieva VB, Belozyorova LM (1997) The influence of speleotherapy on allergic inflammation. Immunol Lett 56(2):331
Falkenbach A, Kovacs J, Franke A, Jorgens K, Ammer K (2005) Radon therapy for the treatment of rheumatic diseases—review and meta-analysis of controlled clinical trials. Rheumato Int 25:205–210
Deetjen P, Falkenbach A, Harder D, Jöckel H, Kaul A, von Philipsborn H (2005) Radon therapy. Therapeutic effects, biological mechanism, and relative risk assessment. Radiat Environ Biophys 44(2):157–158
Nagy K, Berhés I, Kovács T, Kávási N, Somlai J, Kovacs L, Barna I, Bender T (2009) Study on endocronological effects of radon speleotherapy on respiratory diseases. Int J Radiat Biol 85(3):281–290
Somlai J, Kavasi N, Szabo T, Várhegyi A, Kovács T (2007) The function of radon in curing respiratory diseases in the therapeutic cave of Tapolca. J Radioanal Nucl Chem 273:363–370
Kobal I, Smodis B, Burger J, Skofljanec M (1987) Atmospheric 222Rn in tourist caves of slovenia, Yugoslavia. Health Phys 52:473–479
Misdaq MA, Ouguidi J (2008) Radon, thoron and their decay products in natural caves with nuclear track detectors. Radiat Prot Dosim 130(1):110–114. doi:10.1093/rpd/ncn128
Acknowledgments
This work was supported by the PN Program, Projects: No. 09 37 03 01/2011-IFINHH and No. 09 27 01 03/2011-INOE of Romanian Ministry of Education, Research, Youth and Sport.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Calin, M.R., Zoran, M. & Calin, M.A. Radon levels assessment in some Northern Romanian salt mines. J Radioanal Nucl Chem 293, 565–572 (2012). https://doi.org/10.1007/s10967-012-1686-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10967-012-1686-1