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Assessment of radioactivity and radiological risk indices in the sediments of the Tam Giang-Cau Hai, Thi Nai, and Nai lagoons in the Center of Vietnam

  • Dang Hoai Nhon ORCID logo EMAIL logo , Nguyen Van Quan , Phan Son Hai , Bui Van Vuong , Nguyen Ngoc Anh , Nguyen Dac Ve and Hoang Thi Chien
Published/Copyright: April 25, 2024
Radiochimica Acta
From the journal Radiochimica Acta Volume 112 Issue 9

Abstract

Using gamma and alpha spectrometers, the radioactive isotopes 226Ra, 210Pb, 232Th, and 40K were determined in three sediment cores from the Tam Giang-Cau Hai (TG), Thi Nai (TN), and Nai (DN) lagoons, and radiation risk indices were computed. The radioactivity concentrations of 210Pb, 40K, 232Th, and 226Ra were 55.46 Bq/kg, 675.78 Bq/kg, 67.22 Bq/kg, and 34.15 Bq/kg, respectively. The Raeq, ADR, AEDE, Iγr, AUI, Hex, and AGDE indices were 182.31 Bq/kg, 84.46 nGy/h, 0.10 mSV/y, 1.35, 1, 18, 0.49, and 598.71 µSV/y, respectively; the values of 40K, 232Th, AEDE, ADR, Iγr, and AGDE were greater than the global average and UNSCEAR values. The radioactivity and radiation risk indices decreased in the order DN > TN > TG.

Keywords: Tam Giang-Cau Hai Lagoon; Thi Nai Lagoon; Nai Lagoon; radionuclide; radiation risk indices; sediment
Corresponding author: Dang Hoai Nhon, Vietnam Academy of Science and Technology (VAST), Institute of Marine Environment and Resources, Hai Phong City, Vietnam; and Vietnam Academy of Science and Technology (VAST), Graduate University of Science and Technology, Ha Noi City, Vietnam, E-mail:

Acknowledgment

The authors would like to sincerely thank the Ministry of Science and Technology and the Vietnam Academy of Science and Technology for supporting the project completed this project.

  1. Research ethics: Not applicable.

  2. Informed consent: Informed consent was obtained from all individuals included in this study, or their legal guardians or wards.

  3. Author contributions: The author(s) have accepted responsibility for the entire content of this manuscript and approved its submission.

  4. Competing interests: The authors states no conflict of interest.

  5. Research funding: This work was supported by Ministry of Science and Technology (KC.08.25.11/15) and the Vietnam Academy of Science and Technology (VAST05.03/24-25).

  6. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2024-01-07
Accepted: 2024-04-09
Published Online: 2024-04-25
Published in Print: 2024-09-25

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/ract-2024-0271
Keywords for this article
Tam Giang-Cau Hai Lagoon; Thi Nai Lagoon; Nai Lagoon; radionuclide; radiation risk indices; sediment

Articles in the same Issue

  1. Frontmatter
  2. Review
  3. Phytoremediation of radium contaminated soils: recent advances and prospects
  4. Original Papers
  5. Kinetic evaluation of the uranyl peroxide synthetic route on morphology
  6. Fabrication and characterization of graphene oxide and reduced graphene oxide decorated diatomite composite materials and their adsorption performance for uranium ions
  7. The performance of iron-silicate-based biochar as a sorbent material towards 133Ba retention from radioactive liquid waste
  8. Challenges in the solution phase synthesis of PSMA-11 and PSMA-617: organic ligands for radiopharmaceutical preparations in prostate cancer medication
  9. Synthesis, MTT assay, 99m-Technetium radiolabeling, biodistribution evaluation of radiotracer and in vitro magnetic resonance imaging study of P,N-doped graphene quantum dots as a new multipurpose imaging nano-agent
  10. Assessment of radioactivity and radiological risk indices in the sediments of the Tam Giang-Cau Hai, Thi Nai, and Nai lagoons in the Center of Vietnam
  11. Study of gamma, neutron, and proton interaction parameters of some immunotherapy drugs using EpiXs, NGCal, and PSTAR software
  12. Gamma and neutron attenuation of SiO2–B2O3–BaO–Li2O glasses doped with CeO2
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