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Disequilibrium of uranium series radionuclides in soil and plants of South India

  • K. ChandrashekaraEmail author
  • H. M. Somashekarappa
  • A. P. Radhakrishna
Article
  • 18 Downloads

Abstract

Soil and plants of South India were analysed using standard methods for equilibrium state between radionuclides 226Ra, 210Pb, and 210Po of uranium series. A disequilibrium state was observed, with mean 210Pb/226Ra, 210Po/226Ra, and 210Po/210Pb as 21.71, 5.52, and 0.40; 10.01, 4.21, and 0.43; and 30.86, 9.34, and 0.35 in Coastal Karnataka, Malnad Karnataka, and Malnad Kerala, respectively. 210Po/210Pb in soil was 0.29, 0.30, and 0.49 respectively, for the three regions. Unsupported 210Pb and 210Po might have caused the observed disequilibrium state. The investigation helps to monitor radionuclide distribution and dynamics in soil and plants of the study area.

Keywords

Disequilibrium Activity ratio South India Plants 

Notes

Acknowledgements

The first author is grateful to the University Grants Commission (UGC), New Delhi, for awarding him a fellowship under its Faculty Development Programme. The authors are grateful to Prof. Karunakara N., Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, for his help in analysing the samples.

Compliance with ethical standards

Conflict of interest

Authors declare that they have no conflict of interest.

References

  1. 1.
    (UNSCEAR) United Nations Scientific Committee on the Effects of Atomic Radiation (2000) Exposures from natural radiation sources. Vol I, Annex B. United Nations Publication, New YorkGoogle Scholar
  2. 2.
    Primal P, Narayana Y (2014) Studies on the seasonal variation and vertical profiles of natural radionuclides in high background radiation areas of Kerala on the south west coast of India. J Radioanal Nucl Chem 302(2):813–817CrossRefGoogle Scholar
  3. 3.
    Bakım M, Görgün AU (2015) Radioactivity in soils and some terrestrial foodstuffs from organic and conventional farming areas in Izmir, Turkey. J Radioanal Nucl Chem 306(1):237–242CrossRefGoogle Scholar
  4. 4.
    Eisenbud M (1987) Environmental radioactivity from natural, industrial, and military sources. Academic Press, Inc., San DiegoGoogle Scholar
  5. 5.
    Karunakara N, Somashekarappa HM, Narayana Y, Avadhani DN, Mahesh HM, Siddappa K (2003) 226Ra, 40K and 7Be activity concentrations in plants in the environment of Kaiga, India. J Environ Radioact 65(3):255–266CrossRefGoogle Scholar
  6. 6.
    Manigandan PK, Chandrashekar B (2014) Uptake of some radionuclides by woody plants growing in the rainforest of Western Ghats in India. J Environ Radioact 130:63–67CrossRefGoogle Scholar
  7. 7.
    Sahu SK, Ajmal PY, Bhangare RC, Tiwari M, Pandit GG (2014) Natural radioactivity assessment of a phosphate fertilizer plant area. J Rad Res Appl Sci 7(1):123–128Google Scholar
  8. 8.
    (IAEA) International Atomic energy Agency (1982) Genetic models and parameters for assessing the environmental transfer of radionuclides from routine releases, exposure of critical groups. Safety Series No. 57, IAEA, ViennaGoogle Scholar
  9. 9.
    Sussa FV, Silva PSC, Damatto SR, Fávaro DIT, Mazzilli BP (2009) Radioactive and stable elements’ concentration in medicinal plants from Brazil. J Radioanal Nucl Chem 281(2):165–170CrossRefGoogle Scholar
  10. 10.
    Kaplan I (2002) Nuclear physics, 2nd edn. Narosa Publishing House, New DelhiGoogle Scholar
  11. 11.
    Sheppard SC, Sheppard MI, Ilin M, Thompson P (2005) Soil-to-plant transfers of uranium series radionuclides in natural and contaminated settings. Radioprotection 40:527–532CrossRefGoogle Scholar
  12. 12.
    Kaliprasad CS, Narayana Y (2018) Statistical analysis for the confirmation of seasonal variation of radionuclides in different environmental matrices. J Radioanal Nucl Chem 318(2):1181–1187CrossRefGoogle Scholar
  13. 13.
    Avadhani DN, Mahesh HM, Karunakara N, Narayana Y, Somashekarappa HM, Siddappa K (2005) Distribution and behaviour of natural radionuclides in soil samples of Goa on the southwest coast of India. Radioact Environ 7:1131–1140CrossRefGoogle Scholar
  14. 14.
    Narayana Y, Rajashekara KM (2010) The importance of physico-chemical parameters on the speciation of natural radionuclides in riverine ecosystems. J Environ Radioact 101:958–964CrossRefGoogle Scholar
  15. 15.
    Mahon DC, Mathews RW (1983) Uptake of naturally occurring radioisotopes by vegetation in a region of high radioactivity. Can J Soil Sci 63:281–290CrossRefGoogle Scholar
  16. 16.
    Thomas PA (1995) Radionuclides in small mammals of the Saskatchewan prairie including implications for the Boreal Forest and Arctic Tundra. In: Report for environment, Saskatoon, CanadaGoogle Scholar
  17. 17.
    Sheard JW (1986) Distribution of uranium series radionuclides in upland vegetation of northern Saskatchewan. Can J Bot 64:2446–2452CrossRefGoogle Scholar
  18. 18.
    Godoy JM, Govea VA, Mello DR, Azerado AM (1992) 226Ra/210Pb/210Po equilibrium in tobacco leaves. Rad Prot Dos 45:299–300CrossRefGoogle Scholar
  19. 19.
    Baskaran M (2011) Po-210 and Pb-210 as atmospheric tracers and global atmospheric Pb-210 fallout: a review. J Environ Radioact 102:500–513CrossRefGoogle Scholar
  20. 20.
    Herbert LV, Planque GD (1983) EML procedure manual. Environmental Measurement Laboratory, New YorkGoogle Scholar
  21. 21.
    Iyengar MAR, Ganapathy S, Kannan V, Rajan MP and Rajaram S (1990) Procedure manual. In: Workshop on environmental radioactivity, Kaiga, IndiaGoogle Scholar
  22. 22.
    Bhabha Atomic Research Centre (BARC) (2008). Annual report. Standard protocol for evaluation of environmental transfer factors around NPP sites. Mumbai, IndiaGoogle Scholar
  23. 23.
    Chandrashekara K, Somashekarappa HM (2016) 210Po and 210Pb in medicinal plants in the region of Karnataka, Southern India. J Environ Radioact 160:87–92CrossRefGoogle Scholar
  24. 24.
    Karunakara N, Rao C, Ujwal P, Yashodhara I, Kumara S, Ravi PM (2013) Soil to rice transfer factors for 226Ra, 228Ra, 210Pb, 40 K and 137Cs: a study on rice grown in India. J Environ Radioact 118:80–92CrossRefGoogle Scholar
  25. 25.
    Chandrashekara K, Somashekarappa HM (2016) Estimation of radionuclides concentration and average annual committed effective dose due to ingestion for some selected medicinal plants of South India. J Rad Res Appl Sci 9:68–77Google Scholar
  26. 26.
    Khandekar RN (1977) Polonium-210 in Bombay diet. Health Phys 33:150–154Google Scholar
  27. 27.
    Anand SJS, Rangarajan C (1990) Studies on the activity ratio of 210Po to 210Pb and their dry deposition velocities at Bombay, India. J Environ Radioact 11:235–250CrossRefGoogle Scholar
  28. 28.
    Santos PL, Gouvea RC, Dutra IR, Gouvea VA (1990) Accumulation of 210Po in foodstuff cultivated in farms around the Brazilian mining and milling facilities on Pocos de Caldas Plateau. J Environ Radioact 11:41–149CrossRefGoogle Scholar
  29. 29.
    Somashekarappa HM, Narayana Y, Radhakrishna AP, Karunakara N, Balakrishna KM, Siddappa K (1996) Bioindicators in the tropical forest of Kaiga environment. J Environ Radioact 31:189–198CrossRefGoogle Scholar
  30. 30.
    Radhakrishna AP, Somashekarappa HM, Narayana Y, Siddappa K (1996) Distribution of some natural and artificial radionuclides in Mangalore environment of South India. J Environ Radioact 30:31–54CrossRefGoogle Scholar
  31. 31.
    Durance EM (1986) Radioactivity in geology; principles and application. Ellis Horwood Ltd., ChichesterGoogle Scholar
  32. 32.
    Sheppard SC, Sheppard MI, Ilin M, Tait J, Sanipelli B (2008) Primordial radionuclides in Canadian background sites: secular equilibrium and isotopic differences. J Environ Radioact 99:933–946CrossRefGoogle Scholar
  33. 33.
    Somashekarappa HM (1993) Baseline background radiation studies in the environment of Kaiga. PhD Thesis, Mangalore UniversityGoogle Scholar
  34. 34.
    (IAEA) International Atomic energy Agency (2006) The classification of soilsystems on the basis of transfer factors of radionuclides from soil to reference plants. IAEA-TECDOC-1497, IAEA, ViennaGoogle Scholar
  35. 35.
    Savidou A, Kehagia K, Eleftheriadis K (2006) Concentration levels of 210Pb and 210Po in dry tobacco leaves in Greece. J Environ Radioact 85:94–102CrossRefGoogle Scholar
  36. 36.
    Osburn WS (1965) Primordial radionuclides: their distribution, movement and possible effect within terrestrial ecosystems. Health Phys 11:1275–1295CrossRefGoogle Scholar
  37. 37.
    Somashekarappa HM, Narayana Y, Radhakrishna AP, Siddappa K, Joshi VB, Kholekar RV, Baghwat AM (1996) Atmospheric radon levels and its emanation rate in the environment of Kaiga. Radiat Meas 26:35–41CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • K. Chandrashekara
    • 1
    Email author
  • H. M. Somashekarappa
    • 2
  • A. P. Radhakrishna
    • 1
  1. 1.Department of PhysicsSt. Philomena CollegePutturIndia
  2. 2.University Science and Instrumentation CentreMangalore UniversityMangalagangotriIndia

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