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<p>This study investigated the heavy metal (loid) and radionuclide contamination in the soil at a remediated oil drilling site. Radionuclide activity concentrations were within acceptable levels, while elevated concentrations were detected for Cd, Hg, Zn, As, and Cu. Positive matrix factorization identified four distinct sources: oil drilling, remediation process, industrial activities, and natural sources. The radiological risk indices indicated no significant gamma radiation hazard, and non-carcinogenic and carcinogenic indices were within the acceptable levels. The spatial distribution maps of health risk indices followed the distribution pattern of the five heavy metal(loid)s, revealing a single hotspot.</p>

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Integrated assessment of radiological and heavy metal(loid) hazards in soil at a remediated oil drilling site

  • 期刊论文

  • 发表日期：

    2026年1月2日

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  • Andrijana Miletić,
  • Boško Gajić,
  • Jelena Vesković,
  • Snežana Dragović,
  • Milica Lučić,
  • Ranko Dragović,
  • Antonije Onjia

摘要

This study investigated the heavy metal (loid) and radionuclide contamination in the soil at a remediated oil drilling site. Radionuclide activity concentrations were within acceptable levels, while elevated concentrations were detected for Cd, Hg, Zn, As, and Cu. Positive matrix factorization identified four distinct sources: oil drilling, remediation process, industrial activities, and natural sources. The radiological risk indices indicated no significant gamma radiation hazard, and non-carcinogenic and carcinogenic indices were within the acceptable levels. The spatial distribution maps of health risk indices followed the distribution pattern of the five heavy metal(loid)s, revealing a single hotspot.