Abstract
An extensive survey of natural γ radiation dose rate levels was measured throughout the Melaka State, Malaysia. The main objective of the present study is to verify the influence of different soil types γ radiation exposures in air using statistical analyses. One-way analysis of variances ANOVA and post hoc test using Fisher’s least significant difference (LSD) were used to test the probability of significance difference between the dose rates and soil types. The survey involved 541 measurement points of terrestrial gamma radiation dose rates in an area of 1650 km2 which covers five major soil groups based on six FAO/UNESCO soil orders. The spatial dose distributions and descriptive statistics of all measured γ radiation dose rates are presented. It has the mean value of 183 nGy h−1. The significance test using ANOVA shows that all dose rates for four soil groups were significantly different from each other with p sig. value <0.005 and the f-ratio lies in the rejection region, f-critical (F α,(2, n−2)). The post hoc test using Fisher’s LSD shows that there are two main groups of dose rates with each range 152–175 nGy h−1 and 218–233 nGy h−1. These two classification groups indicated the low and high range of dose rates due to the different soil groups derived from different parent rocks. An estimation of average annual effective dose equivalent to the individual in the study area was 1.12 mSv year−1. For granitic soil region, the public is expected to receive slightly high effective dose of 2 mSv year−1. The statistical significance test shows that the soil types significantly influenced the γ radiation exposures received by the public on the ground level.
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References
Abdullah M (1994) Regression analysis, 1st edn. Dewan Bahasa dan Pustaka, Kuala Lumpur
AELB (2006) Atomic Energy Licensing Act 304, Laws of Malaysia. Malaysia Atomic Energy Licensing Boarding-Commisioner of Law Revision, Malaysia. Malaysia National Printing. Bhd., Kuala Lumpur
Agocs WB, Paton JR (1958) Airborne magnetometer and scintillation counter survey of Kedah, Perak, Selangor, Terengganu, Pahang, dan Johor. Internal report, Department of Geological Survey, Ipoh
Apriantoro NH (2008) Radiological study in Perak State and its radiological health impact. Ph.D. thesis, Universiti Teknologi Malaysia. (in Malay)
Chikasawa K, Ishii T, Sugiyama H (2001) Terrestrial gamma radiation in Kochi Prefecture, Japan. J Health Sci 47:361–371
Clouvas A, Xanthos S, Antonopoulos-Domis M, Silva J (2000) Monte Carlo calculation of dose rate conversion factors for external exposure to photon emitters in soil. Health phys 78:295–302
Damla N, Cevik U, Kobya AI, Ataksor B, Isik U (2010) Assessment of environmental radioactivity for Batman, Turkey. Environ Monit Assess 160:401–412
Darko G, Faanu A, Akoto O, Acheampong A, Goode EJ, Gyamfi O (2015) Distribution of natural and artificial radioactivity in soils, water and tuber crops. Environ Monit Assess 187:339
Department of Agriculture Peninsular Malaysia (1993) A Guideline for main soils series in Peninsular Malaysia. Department of Agriculture, Peninsular Malaysia, Kuala Lumpur
Department of Agriculture Peninsular Malaysia (2002) Map of soil types in Peninsular Malaysia. Department of Agriculture, Peninsular Malaysia, Kuala Lumpur
Department of Statistics (2011) Annual book of statistics Malaysia 2011. National Printed Malaysia Berhad, Kuala Lumpur
Goddard CC (2002) Measurement of outdoor terrestrial gamma radiation in the sultanate of Oman. Health Phys 82(6):869–874
Henry DF (1990) Fundamental of soil science. Wiley, New York
IBM (2011) IBM SPSS statistics online help: algorithm: post hoc tests for unequal variances. Copyright IBM Corporation 1989. http://www.pic.dhe.ibm.com/infocenter/spssstat
ICRP (2007) The 2007 recommendations of the International Commission on Radiological Protection. ICRP Publication 103. Ann. ICRP, vol 37. Pergamon Press, Oxford, pp 2–4
International Atomic Energy Agency (1989) Measurement of radionuclides in food and the environment in food and the environment. Technical report series 295 a guidebook. International Atomic Energy Agency (IAEA), Vienna
International Atomic Energy Agency (2003) Guidelines for radioelement mapping using gamma ray spectrometry data. TECDOC 1363. IAEA, Vienna
International Commission on Radiological Protection (ICRP) 60 (1990) Recommendations of the International Commission on Radiological Protection. In: ICRP Publication 60 Annals of the ICRP. Pergamon Press, Oxford
Jibiri NN (2001) Assessments of health risk levels associated with terrestrial gamma radiation dose rates in Nigeria. Environ Int 21:21–26
Lai KK, Hu SJ, Minato S, Kodaira K, Tan KS (1999) Terrestrial gamma ray dose rates of Brunei Darussalam. Appl Radiat Isot 50(3):599–608
Lee SK, Ramli AT, Wagiran H, Apriantoro NH, Wood AK (2009) Radiological monitoring: terrestrial natural radionuclides in Kinta District, Perak, Malaysia. J Environ Radioact 100:368–374
Ludlum (1993) Instruction Manual of Ludlum Model 19 Micro R Meter. Texas: Ludlum Measurements, Inc
Mehra R, Singh S, Singh K, Sonkawade R (2007) 226Ra, 232Th and 40K analysis in soil samples from some areas of Malwa region, Punjab, India using gamma ray spectrometry. Environ Monit Assess 134:33–342
Merdanoğlu B, Altinsoy N (2006) Radioactivity concentrations and dose assessment for soil samples from Kestanbol granite area, Turkey. Radiat Prot Dosim 121(4):399–405
National Council on Radiation Protection and Measurements (1987) Ionizing radiation exposure of the population of the United States. NCRP Publication 90, Bethesda
Pálsson SE, Howard BJ, Bergan TD, Paatero J, Isaksson M, Nielsen SP (2013) A simple model to estimate deposition based on a statistical reassessment of global fallout data. J Environ Radioact 121:75–86
Paramanathan S (1998) Malaysian soil taxonomy: a proposal for the classification of Malaysian soils. Malaysian Society of Soil Science, Selangor
Plummer CC, Carlson DH, McGeary TLD (2007) Physical geology. McGraw-Hill, New York
Quindos LS, Fernandez PL, Soto J (1993) Exposure to natural sources of radiation in Spain. Nucl Tracks Radiat Meas 21(2):295–298
Ramachandran MK, Tsokos CP (2009) Mathematical statistics with application. Chapter 10: analysis of variance. Elsevier, San Diego, pp 501–503
Ramli AT, Abdul Rahman AT, Lee HM (2003) Statistical prediction of terrestrial gamma radiation dose rate based on geological features and soil types in Kota Tinggi district, Malaysia. Appl Radiat Isot 59(6):393–405
Ramli AT, Wagiran H, Sahrone S (2005) Terrestrial gamma radiation dose study to determine the baseline for environmental radiological health practices in Melaka state, Malaysia. J Radiol Prot 25:435–450
Ranade AK, Pandey M, Datta D (2012) Estimation of factors from natural and anthropogenic radioactivity present in the surface soil and comparison with DCF values. Rad Prot Dosim 153:112–116
Saleh MAM (2013) Environmental radiology of Johor State, Malaysia. Ph.D. thesis, Dept. Phys., Universiti Teknologi Malaysia
Sanusi MSM, Ramli AT, Gabdo HT, Garba NN, Heryanshah A, Wagiran H, Said MN (2014) Isodose mapping of terrestrial gamma radiation dose rate of Selangor State, Kuala Lumpur and Putrajaya, Malaysia. J Environ Radioact 135:67–74
Schwartz MO, Rajah SS, Askury AK, Putthapiban P, Djaswadi S (1995) The southeast Asian tin belt. Earth Sci Rev 38:95–293
Strahler AN, Strahler AH (1987) Modern physical geography. Wiley, New York
Tajuddin AA, Hu SJ, Sakanoue M (1994) Continuous measurements of radiation levels along the west coast highway of Peninsular Malaysia. Appl Radiat Isot 45(11):1117–1119
Thorne MC (2003) Background radiation: natural and man-made. J Radiol Prot 23:29–42
Tso MYW, Li CC (1992) Terrestrial gamma radiation dose in Hong Kong. Health Phys 62(1):77–81
Tzortzis M, Tsertos H, Christofides S, Christodoulides G (2003) Gamma-ray measurements of naturally occurring radioactive samples from Cyprus characteristic geological rocks. Radiat Meas 37:221–229
United Nations of Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) (1977) Sources and effects of ionizing radiation. Report to the General Assembly, New York
UNSCEAR (2000) United Nations Scientific Committee on the Effects of Atomic Radiation. Report to the general assembly. Annex B: exposures from natural radiation sources, ISBN-10: 9211422388. UNSCEAR, New York
USDA (1999) Soil taxonomy, a basic system of soil classification for making and interpreting soil surveys. Agriculture handbook 436. United States Department of Agriculture, Washington
Valkovic V (2001) Radioactivity in the environment. Elsevier, Amsterdam
Vijarnsorn P, Fehrenbacher JN (1975) Characteristics and classification of three granite-derived soils in Peninsular Thailand. Soil science for agricultural development in third Asian conference, Kuala Lumpur, 26 Nov–5 Dec 1975
Weiss CA (2008) Introductory statistics. Pearson Education, Boston
WHO (1961) Ionizing radiation and health. World Health Organization, Geneva
Wong IFT (1970) Reconnaissance soil survey of selangor. Divison of Agriculture, Ministry of Agriculture and Land, Malaysia
Acknowledgments
We would like to express our deep gratitude to the Ministry of Education, Malaysia, for providing the fund (QJ130000252603H67) for these studies and to the Universiti Teknologi Malaysia for providing various facilities. Special thanks to the various government officials, owners of the lands, plantations and estates who have allowed us access to their properties.
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Ramli, A.T., Sanusi, M.S.M., Lee, M.H. et al. Spatial distribution of natural γ radiation exposure and its relationship to soil types. Nat Hazards 84, 1859–1872 (2016). https://doi.org/10.1007/s11069-016-2524-5
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DOI: https://doi.org/10.1007/s11069-016-2524-5