Radiological and health hazards resulting from radioactivity and elemental composition of some soil samples

Abdu Hamoud Al-Khawlany 1 , A. R. Khan 2  and J. M. Pathan 3
  • 1 Department of Physics, Dr. Babasaheb Ambedkar University, Department of Physics, Faculty of Education & Languages, Amran University, Aurangabad, India
  • 2 Department of Computer Science, Maulana Azad College, Dr. Babasaheb Ambedkar University, Aurangabad, India
  • 3 Department of Physics, Maulana Azad College, Dr.Babasaheb Ambedkar University, Aurangabad, India

Abstract

Inspection of the radioactivity level in the soil is very important for human health and environmental protection. This study aims at evaluating the radiological hazards and pollution risks related to natural radionuclides and elements in the selected soil samples. Ten samples of soil were collected from different sites of Aurangabad-India and the level of radioactivity was measured using gamma-ray spectrometry with NaI (Tl) detector. Furthermore, the Physico-chemical properties such as pH, organic matter, electrical conductivity, moisture, soil texture, etc., and elemental composition of soils have been decided on using various standard techniques. The mean concentrations of 226Ra, 232Th, and 40K were 8.178, 17.408, and 96.496 Bq/kg, respectively, which are lower than the global average values of 35, 30, and 400 Bq/kg, respectively (UNSCEAR, 2000). The radiological hazard indices such as radium equivalent, absorbed dose, annual effective dose, internal index, external index, gamma index, excess lifetime cancer risk, etc., were calculated to assess the radiation hazards and compared with internationally recommended values which found to be lower than the permissibility limits.

The Pearson correlation was applied to determine the existing relationship between radionuclides and radiological health hazard parameters, as well as with the physicochemical properties of the soil samples. The major and trace elements presented in soils were measured and their mean concentration was ranked in the formed order (Mg>Na>Ca>K>N>Mn>Fe>P>Zn>Cu). The pollution risk parameters (Geo-accumulation index, contamination factor, degree of contamination, pollution load index, and potential ecological risk index) related to the elements in the samples were assessed and results shown that the soils under study are unpolluted with the measured elements. Generally, the radioactivity levels and pollution risks indices in the soils of the study area are within the permissible safety limits and do not cause any significant health threat to humans. Thus, the presented data provide a general background of the detectable radionuclides for the study area and can be helpful in the future as a reference for more extensive studies in the same field.

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  • [1] UNSCEAR. United Nations Scientific Committee on the Effects of Atomic Radiation. In: Sources and Effects of Ionizing Radiation, Vol. I. United Nations, New York. 2000.

  • [2] Al-khawlany AH, Khan AR, Pathan JM, et al. Measurement of activity concentration levels of radionuclides and associated hazard indices in soil samples collected from Aurangabad, Maharashtra-India. Int J Sci Eng Res. 2017; 8(7):1586-1593.

  • [3] Al-Khawlany AH, Khan AR, Pathan JM. Review on studies in natural background radiation. Radiat Prot Environ. 2018; 41(4):215-222.

  • [4] Trachenko K, Dove MT, Geisler T, et al. Radiation damage effects and percolation theory. J Phys Condens Matter. 2004;16(27):S2623-S2627.

  • [5] Baca TE, Florkowski T. The environmental challenges of nuclear disarmament. Springer Science & Business Media. Vol. 29; 2000.

  • [6] EPA. Edition of the Drinking Water Standards and Health Advisories. Environmental Protection Agency: Washington; 2006.

  • [7] Al-Khawlany AH, Khan AR, Pathan JM. Assessment of natural radioactivity levels and associated radiological hazards for some environmental soil and rock samples from outskirts of Aurangabad, India using gamma-ray spectrometry. Int J Innovative Res Sci Eng Technol. 2017; 6(8):16592-16604.

  • [8] Malanca A, Pessina V, Dallara G. Assessment of natural radioactivity in the Brazilian state of Rio Grande. Health Phys. 1993; 65(3):298-302.

  • [9] Patil VD, Ismail S, Kausadikar HK. Practical Manual-Soil Quality Indicators. 1st ed. Published on behalf of Department of Soil Science & Agricultural Chemistry, Marathwada Krishi Vidyapeeth Parbhani-431402, India; 2012. pp. 9-80.

  • [10] Sanjay K, Ketterings QM. Laboratory Manual Soil, Plant and Water Analysis. Department of Animal Science, College of Agriculture and Life Sciences, Cornell University; 2017. pp.1-50.

  • [11] Walkley AJ, Black IA. Estimation of soil organic carbon by the chromic acid titration method. Soil Sci. 1934;37:29-38.

  • [12] Jankovic M, Todorovic D, Savanovic M. Radioactivity measurements in rock samples collected in the Republic of Srpska. Radiat Meas. 2008;43:1448-1452.

  • [13] Veiga RGN, Sanche SR, Anjos M, et al. Measurement of natural radioactivity in Brazillian beach sands. Radiat Meas. 2006;41:189-196.

  • [14] Powell BA, Hughes LD, Soreefan AM, et al. Elevated concentrations of primordial radionuclides in sediments from the Reedy River and surrounding creeks in Simpsonville, South Carolina. J Environ Radioact. 2007;94:121-128.

  • [15] Beretka J, Mathew PJ. Natural radioactivity of Australian building materials, industrial wastes and by-products. Health Phys. 1985;48:87-95.

  • [16] NEA-OECD. Nuclear Energy Agency. Exposure to Radiation from Natural Radioactivity in Building Materials. Report by NEA Group of Experts OECD, Paris; 1979.

  • [17] Mostafa AMA, Mahmoud Uosif MA, Elsaman R, et al. Transmission of natural radiation from soil to maize plants and radiological hazards resulting from consumption in Upper Egypt. J Phys Sci. 2016; 27(3):25-49.

  • [18] Elham B, Masoud VM, Nasrin F. Natural radionuclide and radiological assessment of building materials in high background radiation areas of Ramsar, Iran. J Med Phys. 2013; 38(2):93-97.

  • [19] Awad A, El-Taher IA, Alruwaili HM. Assessment of natural radioactivity levels and radiation hazard indices for soil samples from Abha, Saudi Arabia. Results Phys. 2018;11:325-30.

  • [20] Muller G. Index of geo-accumulation in sediments of the Rhine River. GeoJournal 1969; 2:109-18.

  • [21] Hakanson L. An ecological risk index for aquatic pollution control: A sedimentological approach. Water Res. 1980;14:975-1001.

  • [22] Tomlinson DL, Wilson JG, Harris CR, et al. Problems in the Assessment of Heavy Metal Levels in Estuaries and the Formation of a Pollution Index. Helgol Wiss Meeresunters. 1980;33:566-75.

  • [23] ICRP. International Commission on Radiation Protection against Radon-222 at home and at work, Pergamon Press, Oxford; 1994.

  • [24] El-Taher A, Najam LA, Oraibi AH, et al. Effect of cement factory exhaust on radiological contents of surrounding soil samples in Assuit province-Egypt. J Phys Sci. 2017; 28(3):137-50.

  • [25] Santos JAS, Amaral RS, Nascimento JM. Radioactive disequilibrium and dynamic of natural radionuclides in soils in the state of pernambuco Brazil. Radia Prot Dosim. 2018: pp.1-11. doi:10.1093/rpd/ncy101.

  • [26] Johnson CK, Eigenberg RA, Doran JW, et al. Status of soil electrical conductivity studies by central states researchers. Trans Am Soc Agric Eng. 2005; 48(3):979-89.

  • [27] Bednar AJ, Jones WT, Boyd RE, et al. Geochemical parameters influencing tungsten mobility in soils. J Environ Qual. 2008; 37(1):229-33.

  • [28] USDA-United States Department of Agriculture, Soil Taxonomy, USDA-NRCS, Washington, DC, USA; 2012.

  • [29] Tsai TL, Liu C, Chuang CY, et al. The effects of physico-chemical properties on natural radioactivity levels, associated dose rate and evaluation of radiation hazard in the soil of Taiwan using statistical analysis. J Radioanal Nucl Chem. 2011; 288:927-36. doi 10.1007/s10967-011-1032-z.

  • [30] Rajalakshmi A, Chandrasekaran A, Ravisankar R. Soil pollution assessment in salt field area of Kelambakkam, Tamilnadu using different analytical techniques. Acta Ecologica Sinica 2017;37:373-78.

  • [31] Hans Wedepohl K. The composition of the continental crust. Geochim Cosmochim Acta 1995; 59(7):1217-32.

  • [32] Kabata-Pendias A, Pendias H. Trace Elements in Soils and Plants, CRC Press, New York, NY, USA; 2001.

  • [33] Turekian KK, Wedepohl KH. Distribution of the elements in some major units of the Earth’s crust. Geol Soc Am Bull. 1961;72:175-92.

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