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Spatial distribution of NORMs concentrations and assessing potential risk to inhabitants in western Chattogram, Bangladesh.

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Title: Spatial distribution of NORMs concentrations and assessing potential risk to inhabitants in western Chattogram, Bangladesh.
Authors: Rashed-Nizam, Quazi Muhammad1 (AUTHOR), Islam Bhuian, AKM Saiful2 (AUTHOR), Resma, Nighat Sultana2 (AUTHOR), Debnath, Manish2 (AUTHOR), Anik, Md. Ashik Azad Khan1,3 (AUTHOR) ashikazadaneek@gmail.com
Source: International Journal of Environmental Analytical Chemistry. Dec2025, Vol. 105 Issue 16, p4021-4038. 18p.
Subjects: Radioactive elements, Radioactive substances, Radioecology, Soil sampling, Radiation protection, Grids (Cartography)
Geographic Terms: Bangladesh, Chittagong (Bangladesh)
Abstract: This study represents a pioneering endeavour in consolidating previous measurements of naturally occurring radioactive materials (NORMs) within the Chattogram division, Bangladesh. Employing a meticulous approach, data was overlaid onto a comprehensive grid map covering the entire Chattogram region, comprising 523 grids, each of 8.05 km x 8.05 km. The analysis revealed numerous areas where NORMs concentrations had not been previously measured. To bridge this gap, soil samples were collected from 56 previously unmeasured locations across Cumilla and Chandpur districts and analysed using high purity Germanium (HPGe) detector technology. Results indicated average activity concentrations of Ra-226, Th-232, and K-40 at 27.30 ± 5.41, 46.09 ± 7.88, and 362.50 ± 48.10 Bq.kg−1 respectively, with no detectable presence of Cs-137 or other anthropogenic radionuclides, affirming the region's absence of fallout or accidental releases. Additionally, measured values for radiation hazard indices are well within acceptable limits set by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Spatial distribution maps of radionuclide concentrations and absorbed dose rates were generated not only for the immediate study area but also for the entire Chattogram division, integrating previously collected data for the first time. These distribution maps, alongside the comprehensive findings of this study, establish a pivotal dataset for future research and regulatory efforts, providing invaluable insights into the region's radiological landscape. HIGHLIGHTS: Previously measured data of NORMs are accumulated to avoid redundancy in Chattogram division in this study. A proposed systematic grid map has prepared and applied for sample collection. Non-measured places in Chattogram division have revealed for first time in this study. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Environmental Analytical Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Label: Title
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  Data: Spatial distribution of NORMs concentrations and assessing potential risk to inhabitants in western Chattogram, Bangladesh.
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  Data: <searchLink fieldCode="AR" term="%22Rashed-Nizam%2C+Quazi+Muhammad%22">Rashed-Nizam, Quazi Muhammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Islam+Bhuian%2C+AKM+Saiful%22">Islam Bhuian, AKM Saiful</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Resma%2C+Nighat+Sultana%22">Resma, Nighat Sultana</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Debnath%2C+Manish%22">Debnath, Manish</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Anik%2C+Md%2E+Ashik+Azad+Khan%22">Anik, Md. Ashik Azad Khan</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> ashikazadaneek@gmail.com</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Environmental+Analytical+Chemistry%22">International Journal of Environmental Analytical Chemistry</searchLink>. Dec2025, Vol. 105 Issue 16, p4021-4038. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Radioactive+elements%22">Radioactive elements</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+substances%22">Radioactive substances</searchLink><br /><searchLink fieldCode="DE" term="%22Radioecology%22">Radioecology</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+sampling%22">Soil sampling</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation+protection%22">Radiation protection</searchLink><br /><searchLink fieldCode="DE" term="%22Grids+%28Cartography%29%22">Grids (Cartography)</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Bangladesh%22">Bangladesh</searchLink><br /><searchLink fieldCode="DE" term="%22Chittagong+%28Bangladesh%29%22">Chittagong (Bangladesh)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study represents a pioneering endeavour in consolidating previous measurements of naturally occurring radioactive materials (NORMs) within the Chattogram division, Bangladesh. Employing a meticulous approach, data was overlaid onto a comprehensive grid map covering the entire Chattogram region, comprising 523 grids, each of 8.05 km x 8.05 km. The analysis revealed numerous areas where NORMs concentrations had not been previously measured. To bridge this gap, soil samples were collected from 56 previously unmeasured locations across Cumilla and Chandpur districts and analysed using high purity Germanium (HPGe) detector technology. Results indicated average activity concentrations of Ra-226, Th-232, and K-40 at 27.30 ± 5.41, 46.09 ± 7.88, and 362.50 ± 48.10 Bq.kg−1 respectively, with no detectable presence of Cs-137 or other anthropogenic radionuclides, affirming the region's absence of fallout or accidental releases. Additionally, measured values for radiation hazard indices are well within acceptable limits set by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Spatial distribution maps of radionuclide concentrations and absorbed dose rates were generated not only for the immediate study area but also for the entire Chattogram division, integrating previously collected data for the first time. These distribution maps, alongside the comprehensive findings of this study, establish a pivotal dataset for future research and regulatory efforts, providing invaluable insights into the region's radiological landscape. HIGHLIGHTS: Previously measured data of NORMs are accumulated to avoid redundancy in Chattogram division in this study. A proposed systematic grid map has prepared and applied for sample collection. Non-measured places in Chattogram division have revealed for first time in this study. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Environmental Analytical Chemistry is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/03067319.2024.2357749
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 18
        StartPage: 4021
    Subjects:
      – SubjectFull: Radioactive elements
        Type: general
      – SubjectFull: Radioactive substances
        Type: general
      – SubjectFull: Radioecology
        Type: general
      – SubjectFull: Soil sampling
        Type: general
      – SubjectFull: Radiation protection
        Type: general
      – SubjectFull: Grids (Cartography)
        Type: general
      – SubjectFull: Bangladesh
        Type: general
      – SubjectFull: Chittagong (Bangladesh)
        Type: general
    Titles:
      – TitleFull: Spatial distribution of NORMs concentrations and assessing potential risk to inhabitants in western Chattogram, Bangladesh.
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            NameFull: Rashed-Nizam, Quazi Muhammad
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            NameFull: Resma, Nighat Sultana
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            NameFull: Debnath, Manish
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              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
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