Environmental Geology

, Volume 50, Issue 7, pp 977–982 | Cite as

Measurement of natural radioactivity in sand samples collected from the Baoji Weihe Sands Park, China

Original Article

Abstract

The activity concentrations and the gamma-absorbed dose rates of the primordial naturally occurring radionuclides 226Ra, 232Th and 40K were determined for sand samples collected from the Baoji Weihe Sands Park, China, using γ-ray spectrometry. The natural radioactivity concentration of sand ranges from 10.2 to 38.3 Bq kg−1 for 226Ra, 27.0 to 48.8 Bq kg−1 for 232Th and 635.8 to 1,126.7 Bq kg−1 for 40K with mean values of 22.1, 39.0 and 859.1 Bq kg−1, respectively. The concentrations of these radionuclides are compared with the typical world values and the average activity of Chinese soil. The measured activity concentration of 226Ra and 232Th in sand is lower than the world average while that of 40K is higher. . To evaluate the radiological hazard of the natural radioactivity, the radium equivalent activity, the external hazard index, the absorbed dose rate, and the effective dose rate have been calculated and compared with internationally approved values. The radium equivalent activity values of all sand samples are lower than the limit of 370 Bq kg−1. The values of the external hazard index are less than unity. The mean outdoor air absorbed dose rate is 69.6 nGy h−1 and the corresponding outdoor effective dose rate is 0.085 mSv y−1.

Keywords

Natural radioactivity Sand γ-Ray spectrometry Gamma dose rate Sands Park China 

References

  1. Ahmad N, Matiullah, Khatibeh AJAH, Ma’ly A, Kenawy MA (1997) Measurement of natural radioactivity in Jordanian sand. Radiat Meas 28:341–344CrossRefGoogle Scholar
  2. Alam MN, Chowdhury MI, Kamal M, Ghose S, Islam MN, Mustafa MN, Miah MMH, Ansary MM (1999) The 226Ra, 232Th and 40K activities in beach sand minerals and beach soils of Cox’s Bazar, Bangladesh. J Environ Radioact 46:243–250CrossRefGoogle Scholar
  3. Alencar AS, Freitas AC (2005) Reference levels of natural radioactivity for the beach sands in a Brazilian southeastern coastal region. Radiat Meas 40:76–83CrossRefGoogle Scholar
  4. Benke RR, Kearfott KJ (1999) Soil sample moisture content as a function of time during oven drying for gamma-ray spectroscopic measurements. Nucl Instr Meth Phys Res A 422:817–819CrossRefGoogle Scholar
  5. Beretka J, Mathew PJ (1985) Natural radioactivity of Australian building materials, industrial wastes and by-products. Health Phys 48:87–95PubMedCrossRefGoogle Scholar
  6. Chen YM, Shun SM, Ren XQ, Xiao JM, Dong XN (1994) Investigation of natural radionuclide contents in soil in Shaanxi province (in Chinese). Radia Prot 14:218–221Google Scholar
  7. Chiozzi P, De Felice P, Fazio A, Pasquale V, Verdoya M (2000) Laboratory application of NaI(Tl) γ-ray spectrometry to studies of natural radioactivity in geophysics. Appl Radiat Isot 53:127–132CrossRefPubMedGoogle Scholar
  8. El-Arabi AM (2005) Natural radioactivity in sand used in thermal therapy at the Red Sea Coast. J Environ Radioact 81:11–19CrossRefPubMedGoogle Scholar
  9. Fasasi MK, Oyawale AA, Mokobia CE, Tchokossa P, Ajayi TR, Balogun FA (2003) Natural radioactivity of the tar-sand deposits of Ondo State, Southwestern Nigeria. Nucl Instr Meth Phys Res A 505:449–453CrossRefGoogle Scholar
  10. Freitas AC, Alencar AS (2004) Gamma dose rates and distribution of natural radionuclides in sand beaches-Ilha Grande, Southeastern Brazil. J Environ Radioact 75:211–223CrossRefPubMedGoogle Scholar
  11. González-Chornet G, González-Labajo J (2004) Natural radioactivity in beach sands from Doñana National Park and Mazagón (Spain). Radiat Prot Dosim 112:307–310CrossRefGoogle Scholar
  12. Iqbal M, Tufail M, Mirza SM (2000) Measurement of natural radioactivity in marble found in Pakistan using a NaI(Tl) gamma-ray spectrometer. J Environ Radioact 51:255–265CrossRefGoogle Scholar
  13. Khatibeh AJAH, Ma’ly A, Ahmad N, Matiullah (1997) Natural radioactivity in Jordanian construction materials. Radiat Prot Dosim 69:143–147Google Scholar
  14. Kumar A, Kumar M, Singh B, Singh S (2003) Natural activities of 238U, 232Th and 40K in some Indian building materials. Radiat Meas 36:465–469CrossRefGoogle Scholar
  15. Malanca A, Gaidolfi L, Pessina V, Dallara G (1996) Distributions of 226Ra, 232Th, and K in soils of Rio Grande do Norte (Brazil). J Environ Radioact 30:55–67CrossRefGoogle Scholar
  16. Matiullah, Ahad A, Rehman S, Rehman S, Feheem M (2004) Measurement of radioactivity in the soil of Bahawalpur division, Pakistan. Radiat Prot Dosim 112:443–447CrossRefGoogle Scholar
  17. Singh S, Rani A, Mahajan RK (2005) 226Ra, 232Th and K analysis in soil samples from some areas of Punjab and Himachal Pradesh, India using gamma ray spectrometry. Radiat Meas 39:431–439CrossRefGoogle Scholar
  18. UNSCEAR (1993) Sources and effects of ionizing radiation. United Nations, New YorkGoogle Scholar
  19. UNSCEAR (2000) Sources and effects of ionizing radiation. United Nations, New YorkGoogle Scholar
  20. Veiga R, Sanches N, Anjos RM, Macario K, Bastos J, Iguatemy M, Aguiar JG, Santos AMA, Mosquera B, Carvalho C, Baptista Filho M, Umisedo NK (2006) Measurement of natural radioactivity in Brazilian beach sands. Radiat Meas 41:189–196CrossRefGoogle Scholar
  21. Wang Z (2002) Natural radiation environment in China. Int Congr Ser 1225:39–46CrossRefGoogle Scholar
  22. Yang YX, Wu XM, Jiang ZY, Wang WX, Lu JG, Lin J, Wang LM, Hsia YF (2005) Radioactivity concentrations in soils of the Xiazhuang granite area, China. Appl Radiat Isot 63:255–259CrossRefPubMedGoogle Scholar
  23. Zhang CF, Li JY (1994) Investigation of environmental natural penetrating radiation level in Shaanxi province. (in Chinese). Radia Prot 14:276–283Google Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.College of Tourism and EnvironmentShaanxi Normal UniversityXi’anPeople’s Republic of China

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