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Measurements of Radon Concentrations and Dose Assessments in Chemistry Department-Science College- Al-Mustansiriyah University, Baghdad, Iraq
Authors(2) :-Iman Tarik Al-Alawy, Haider Rayed Fadhil
Measurements of radon gas concentrations with their progeny and the annual effective dose indoor the building of Al-Mustansiriyah University College of Science-Chemistry Department have been carried out by using time-integrated passive radon dosimeters solid state nuclear track detector CR-39 technique. The detectors with 1cm x1cm have been distributed over 58 places and suspended for sitting (1m) and standing (1.75m) positions in each location under study. The dosimetric measurements are made over a period of 100 days from 30 January 2014 to 10 May 2014. The calibration process has been done using radium-226 source with known activity radiation. It has found that the indoor radon gas concentrations varying from 35.220±5.935Bg/m3 to 71.673±8.466Bg/m3 with an average value 49.129±6.969Bg/m3 at 1m, and varying from 31.794±5.639Bg/m3 to 68.246±8.261Bg/m3 with an average value 45.487±6.696Bg/m3 at 1.75m which are within the worldwide limits 148Bg/m3 (EPA, 2003) and 200-300Bg/m3 (ICRP, 2009). The annual effective dose of the inhalation exposure to radon gas has been estimated and this vary from 0.370mSv/y to 0.753mSv/y with an average value 0.516mSv/y at 1m, and varying from 0.334mSv/y to 0.717mSv/y with an average value 0.478mSv/y at 1.75m which are within the worldwide permissible limits 3-10mSv/y (ICRP, 1993). The potential alpha energy concentration found to vary from 3.808mWL to 7.748mWL with an average value 5.311mWL at 1m and vary from 3.437mWL to 7.378mWL with an average value 4.918mWL at 1.75m which are less than the recommended value 53.33mWL (UNSCEAR, 1993). The lung cancer cases per million person per year vary from 6.664 to 13.562per million person per year with an average value 9.296per million person per year at 1m and vary from 6.016 to 12.913per million person per year with an average value 8.607per million person per year which are less than the recommended range 170-230 per million person per year (ICRP, 1993). The number of decays per-minute using swabs measurements technique have been used for selected units within two swabs from building materials walls for each unite, with area of 100cm2 using Ludlum 3030, the average of three swabs measurements have been calculated. Hence, the effectiveness of emitted alpha particles from the walls has been calculated to be varied from 0.00556 to 0.02222Bq/cm2 with an average value 0.01154Bq/cm2 at 1m and 0.00000Bq/cm2 to 0.01667Bq/cm2 with an average value 0.00983Bq/cm2 at 1.75m respectively which is within the permissible limit 0.04Bq/cm2 (Danial, 2010).
Iman Tarik Al-Alawy, Haider Rayed Fadhil
Indoor Radon gas; Natural radioactivity; CR-39 detector; Annual effective dose; Ludlum 3030
- UNSCEAR, (2000), United Nations Scientific Committee on the Effects of Atomic Radiation, Sources and Effects of Ionizing Radiation, Report to the General Assembly with scientific Annex E: Occupational Radiation Exposures. Sources to Effects Assessment for Radon in Homes and Workplaces. New York, United Nations, 2000.
- H. Cember and T. E., (2009), Johnson, Introduction to Health Physics, (4th edition) New York: Mc Graw-Hill Companies.
- UNSCEAR, (1993), United Nations Scientific Committee on the Effect of Atomic Radiation. Sources and Effects of Ionizing Radiation, Report to the General Assembly with Scientific Annexes A and B: Exposures from natural sources of radiation; Exposures from man-made sources of radiation, New York,1993.
- H. H. Mansour, (2005), Measurement of Indoor Radon Level in Arbil Capital by Using Solid State Nuclear Track Detectors, Radiation Measurements, 40, pp.544-547.
- K. N. Yu, D. Nikezic, F. M. F. Ng and J.K.C. Leung, (2005), Leung, Long – Term Measurements of Radon Progeny Concentrations with Solid StateNuclear Track Detectors, Radiation Measurements, 40, pp.560-568.
- K.M. Abumurad and R. A. Al-Omari, (2008), Indoor Radon Levels in Irbid and Health Risks from Internal Dose, Radiation Measurements, 43, pp.S389-S391.
- R., Shweikani, (2012), Variatio of Radon Exposure in Damasus Dwelling, Applies Radiation and Isotopes, 70, pp.785-789.
- S. Kansal, R. Mehra and N. P. Singh, (2012), Life Time Fatality Risk Assessment Due to Variation of Indoor Radon Concentration in Dwellings in Western Haryana, India, Applied Radiation and Isotopes, 70(7), pp.1110-1112.
- S.S. Al-Ghamdi, (2014), Seasonal and Location Dependence of Indoor and Soil Radon Concentrations in Two Villages Najran Region, Saudi Arabia, Radiation Measurements, 69, pp.12-17.
- A. Sakoda, O. Meisenberg and J. Tschiersch, (2015), Behavior of Radon Progeny Produced in a Scintillation Cell in the Flow – Through Condition, Radiation Measurements, 77, pp.41-45.
- A. D. Saeed and I. Radomir, (1997), Radon Measurements by Etched Track Detectors: Applications in Radiation Protection, Earth Sciences and the Environment, Published by World Scientific Publishing Co.Inc , May 1997. Edited by: A. D. Saeed, (University of Birmingham, England) and I. Radomir, (University of Ljubljana and University of Maribor, Slovenia, 1997).
- O. Amalds, N. H. Custball and G. A. Nielsen, (1989), Cs-137 in Montarq Soils, Health Physics, 57(6), pp.955-958.
- E. H. EL-Araby, (2013), Environmental Air Dosimetry in Some Locations of Jazan Using Passive Track Detectors, Life Sciences and Technologies, 1(1), pp.75-78.
- F. Michael, (2007), Radioactivity: Introduction and History, 1st edition, Elsevier.
- J. Chen, NM. Rahman and IA. Atiya, (2010), Radon Exhalation from Building Materials for Decorative Use, Environmental Radioactivity, 101(4), pp.317-322.
- A. B. Tanner, (1980), Radon Migration in the Ground: a Supplementary Review. In Gessell, TF, and Lowder, WM, (eds.), Natural Radiation Environment III. Report No. CONF - 780422, Springfield, VA: National Technical Information Service, 1980, pp.5-56.
- M. Al-Kofahi, B. Khader, A. Lehlooh, M. Kullab, K. Abumurad and B. Al-Bataina, (1992), Measurement of Radon 222 in Jordanian Dwellings, Nuclear Tracks Radiation Measurements, 20, pp.377-382.
- J. Wiegand, (2001), A Guideline for the Evaluation of the Soil Radon Potential Based on Geogenic and Anthropogenic Parameters, Environmental Geology, 40, pp.949-963.
- M. Rasas, (2003), Measurement of Radon and Its Daughter's Concentrations in Indoor and Outdoor Throughout Gaza Strip", M.Sc. Thesis. Islamic University of Gaza.
- W. Wahl, (2007), Radionuclide Handbook for Laborator Workers: in Spectrometry, Radiation Protection and Medicine, ISuS, Germany.
- A. H. Ismail and M. S. Jaafar, (2010), Indoor Radon Concentration and Its Health Risks in Selected Locations in Iraqi Kurdistan Using CR-39 NTDs. The 4th International Conference on Bioinformatics and Biomedical Engineering (ICBBE 2010). 18-20 June 2010. Cheengdu-Chaina.
- A. A. Abdullah, (2013), Internal and External Radiation Exposure Evaluation amongst Selected Workers and Locations in Iraq". Ph.D. Thesis, University Sains Malaysia,Malaysia.
- OSA, Office for Research Safety, (2010), Radiation Safety Handbook. Radiation Worker Registratio and Personnel Dosimetry. Dose and Exposure, Dose Equivalent. Northwestern University.
- USEPA, US EPA, Environments Division (6609J), (2004), A Citizen’s Guide to Radon: The Guide to Protecting Yourself and Your Family from Radon (Washington, DC 20460 US EPA 402-K-02-006, 2004.
- ICRP, (1965), International Commission on Radiological Protection. Recommendations of the International Commission on Radiological Protection, Annals of the ICRP/ICRP Publication, 9, pp.1-27.
- N. Kavasi, T. Kovacs, C. Nemeth, T. Szabo, Z. Gorjanacz, A. Varhegyi, J. Hakl and J. Somlai, (2006), Difficulties in Radon Measurements at Workplaces, Radiation Measurements, 41, pp.229-234.
- ICRP, (2009), International Commission on Radiological Protection, International Commission on Radiological Protection Statement on Radon. ICRP, Ref.00/902/09,2009.
- G.M. Kendall, B.M.R. Green, J.C.H. Miles and D.W. Dixon, (2005), The Development of the UK Radon Programme, Radiological Protection, 25(4), p.475.
- EPA, Environmental Protection Agency, (2003), Assessment of Risks from Radon in Homes, (EPA 402-R-03-003). Office of Radiation and Indoor Air United States Environmental Protection Agency, Washington, DC, 20460, 2003.
- G. Akerblom, (1999), Radon legislation and National Guidelines Swedish Radiation Protection Institute, SSI Report 99:18, ISSN 0282-4434, 1999.
- ICRP, (1993), International Commission on Radiological Protection. Against Radon-222 at Home and at Work, ICRP Publication 65, Annual of the ICRP Pergamon. 23(2), 1993.
- A. G. Daniel, (2011), Basic Radiation Protection Technology, 6th edition, Publisher: Pacific Radiation Corporation, ISBN: 978-0-916339-14-2, 2011.
Published in : Volume 2 | Issue 4 | July-August 2016
Date of Publication : 2016-08-30
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 72-82
Manuscript Number : IJSRST162384
Publisher : Technoscience Academy
PRINT ISSN : 2395-6011
ONLINE ISSN : 2395-602X
Cite This Article :
Iman Tarik Al-Alawy, Haider Rayed Fadhil, "Measurements of Radon Concentrations and Dose Assessments in Chemistry Department-Science College- Al-Mustansiriyah University, Baghdad, Iraq", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 2, Issue 4, pp.72-82
URL : http://ijsrst.com/IJSRST162384