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Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria

Received: 8 February 2022    Accepted: 11 March 2022    Published: 29 March 2022
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Abstract

Ionizing radiations emanating from human natural environment could have serious negative effects at certain exposure level. Therefore the evaluation of radioisotopes of natural origin becomes very important in order to achieve specific objective to quantifying the radiological parameters and their respective health implications. Hence the estimation of Activity Utlization Index (AUI) and Excess Lifetime Cancer Risk (ELCR) has been done using gamma spectroscopy method. The results showed that the mean activity concentrations of 238U, 232Th, and 40K from which the AUI and ELCR were computed were 22.19, 9.70 and 543.80 Bqkg-1 respectively. Activity Utilization Index ranged from 0.24 to 0.55 and Excess Lifetime Cancer Risk ranged from 0.07 to 0.17 x 10-3. The average value of AUI was 0.38 whereas that of ELCR was found to be 0.12×10-3 which implied that 0.38 < 2, 0.17 < 0.29, standard permissible limits. Mean values of Dose, Igamma, annual effective dose equivalent (AEDE), Hin, Hex and annual gonadal equivalent dose (AGED) were 38.95nGh-1, 0.61, 0.05, 0.27, 0.21 and 279.87µSvy-1 respectively. In conclusion, the empirical values of activity utilization index showed good air quality. Also, the computed values of the excess lifetime cancer risks indicated very low chances of potential carcinogenicity effect for a specific exposure to ionizing radiation in this environment.

Published in American Journal of Environmental Science and Engineering (Volume 6, Issue 1)
DOI 10.11648/j.ajese.20220601.21
Page(s) 71-79
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Estimation, Gamma Ray Spectrometry, Health Indices, Risk

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    Anekwe Uzochukwu Leonard, Odezuligbo Ikenna Emmanuel. (2022). Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria. American Journal of Environmental Science and Engineering, 6(1), 71-79. https://doi.org/10.11648/j.ajese.20220601.21

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    Anekwe Uzochukwu Leonard; Odezuligbo Ikenna Emmanuel. Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria. Am. J. Environ. Sci. Eng. 2022, 6(1), 71-79. doi: 10.11648/j.ajese.20220601.21

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    AMA Style

    Anekwe Uzochukwu Leonard, Odezuligbo Ikenna Emmanuel. Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria. Am J Environ Sci Eng. 2022;6(1):71-79. doi: 10.11648/j.ajese.20220601.21

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  • @article{10.11648/j.ajese.20220601.21,
      author = {Anekwe Uzochukwu Leonard and Odezuligbo Ikenna Emmanuel},
      title = {Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria},
      journal = {American Journal of Environmental Science and Engineering},
      volume = {6},
      number = {1},
      pages = {71-79},
      doi = {10.11648/j.ajese.20220601.21},
      url = {https://doi.org/10.11648/j.ajese.20220601.21},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajese.20220601.21},
      abstract = {Ionizing radiations emanating from human natural environment could have serious negative effects at certain exposure level. Therefore the evaluation of radioisotopes of natural origin becomes very important in order to achieve specific objective to quantifying the radiological parameters and their respective health implications. Hence the estimation of Activity Utlization Index (AUI) and Excess Lifetime Cancer Risk (ELCR) has been done using gamma spectroscopy method. The results showed that the mean activity concentrations of 238U, 232Th, and 40K from which the AUI and ELCR were computed were 22.19, 9.70 and 543.80 Bqkg-1 respectively. Activity Utilization Index ranged from 0.24 to 0.55 and Excess Lifetime Cancer Risk ranged from 0.07 to 0.17 x 10-3. The average value of AUI was 0.38 whereas that of ELCR was found to be 0.12×10-3 which implied that 0.38 in, Hex and annual gonadal equivalent dose (AGED) were 38.95nGh-1, 0.61, 0.05, 0.27, 0.21 and 279.87µSvy-1 respectively. In conclusion, the empirical values of activity utilization index showed good air quality. Also, the computed values of the excess lifetime cancer risks indicated very low chances of potential carcinogenicity effect for a specific exposure to ionizing radiation in this environment.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Estimation of Utilization Index and Excess Lifetime Cancer Risk in Soil Samples Using Gamma Ray Spectrometry in Ibolo-Oraifite, Anambra State, Nigeria
    AU  - Anekwe Uzochukwu Leonard
    AU  - Odezuligbo Ikenna Emmanuel
    Y1  - 2022/03/29
    PY  - 2022
    N1  - https://doi.org/10.11648/j.ajese.20220601.21
    DO  - 10.11648/j.ajese.20220601.21
    T2  - American Journal of Environmental Science and Engineering
    JF  - American Journal of Environmental Science and Engineering
    JO  - American Journal of Environmental Science and Engineering
    SP  - 71
    EP  - 79
    PB  - Science Publishing Group
    SN  - 2578-7993
    UR  - https://doi.org/10.11648/j.ajese.20220601.21
    AB  - Ionizing radiations emanating from human natural environment could have serious negative effects at certain exposure level. Therefore the evaluation of radioisotopes of natural origin becomes very important in order to achieve specific objective to quantifying the radiological parameters and their respective health implications. Hence the estimation of Activity Utlization Index (AUI) and Excess Lifetime Cancer Risk (ELCR) has been done using gamma spectroscopy method. The results showed that the mean activity concentrations of 238U, 232Th, and 40K from which the AUI and ELCR were computed were 22.19, 9.70 and 543.80 Bqkg-1 respectively. Activity Utilization Index ranged from 0.24 to 0.55 and Excess Lifetime Cancer Risk ranged from 0.07 to 0.17 x 10-3. The average value of AUI was 0.38 whereas that of ELCR was found to be 0.12×10-3 which implied that 0.38 in, Hex and annual gonadal equivalent dose (AGED) were 38.95nGh-1, 0.61, 0.05, 0.27, 0.21 and 279.87µSvy-1 respectively. In conclusion, the empirical values of activity utilization index showed good air quality. Also, the computed values of the excess lifetime cancer risks indicated very low chances of potential carcinogenicity effect for a specific exposure to ionizing radiation in this environment.
    VL  - 6
    IS  - 1
    ER  - 

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Author Information
  • Department of Physics, Federal University, Otuoke, Nigeria

  • Department of Physics, Creighton University, Nebraska, USA

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