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Study of Well Waters from High-Level Natural Radiation Areas in Northern Vietnam

Author

Listed:
  • Van-Hao Duong

    (Geophysics Department, Hanoi University of Mining and Geology, No 18, Vien Street, Bac Tu Liem District, Hanoi 100 000, Vietnam)

  • Thanh-Duong Nguyen

    (Geophysics Department, Hanoi University of Mining and Geology, No 18, Vien Street, Bac Tu Liem District, Hanoi 100 000, Vietnam)

  • Miklos Hegedus

    (Institute of Radiochemistry and Radioecology, University of Pannonia, H-8200 Veszprem, Hungary)

  • Erika Kocsis

    (Institute of Radiochemistry and Radioecology, University of Pannonia, H-8200 Veszprem, Hungary)

  • Tibor Kovacs

    (Institute of Radiochemistry and Radioecology, University of Pannonia, H-8200 Veszprem, Hungary)

Abstract

The determination of natural radionuclide concentrations plays an important role for assuring public health and in the estimation of the radiological hazards. This is especially true for high level radiation areas. In this study, 226 Ra, 228 Ra and 238 U concentrations were measured in well waters surrounding eight of the high-level natural radiation areas in northern Vietnam. The 226 Ra, 228 Ra and 238 U activity concentrations vary from <1.2 × 10 −3 –2.7 (0.46), <2.6 × 10 −3 –0.43 (0.07) and <38 × 10 −3 –5.32 Bq/L (0.50 of median), respectively. 226 Ra and 238 U isotopes in most areas are in equilibrium, except for the DT-Thai Nguyen area. The calculated radiological hazard indices are generally higher than WHO (World Health Organization) recommendations. Average annual effective dose and excess lifetime cancer risk values due to drinking well water range from to 130 to 540 μSv/year and 7.4 × 10 −6 to 3.1 × 10 −5 , respectively.

Suggested Citation

  • Van-Hao Duong & Thanh-Duong Nguyen & Miklos Hegedus & Erika Kocsis & Tibor Kovacs, 2021. "Study of Well Waters from High-Level Natural Radiation Areas in Northern Vietnam," IJERPH, MDPI, vol. 18(2), pages 1-9, January.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:2:p:469-:d:477002
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