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June 15, 2026Earth SciencesOpen Access

Simulation Study on Vertical Migration Processes and Driving Mechanisms of Polycyclic Aromatic Hydrocarbons in Permafrost Soils

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Authors

QBQinxuan BaiZHZhiyong HanDWDehua Wang

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Overview

Simulation study examines vertical migration of PAHs in permafrost soils, indicating leaching mechanisms drive movement upward.

Key Points

  • This study aims to investigate vertical migration processes and mechanisms of polycyclic aromatic hydrocarbons in permafrost soils.
  • Conducted indoor soil column leaching experiments with loess soil from Lanzhou under freeze-thaw cycling conditions.
  • Simulated the vertical migration and distribution of 16 priority-controlled PAHs within soil profiles.
  • Analyzed the driving mechanisms of PAH migration influenced by freeze-thaw cycles and leaching processes.
  • Freeze-thaw cycles lead to upward migration of PAHs due to water movement toward the freeze front.
  • Leaching drives vertical migration of dissolved-phase PAH pollutants through the soil profile.
  • Overall, leaching serves as the primary driving force for upward migration of PAHs over greater distances.

Cite This Study

Bai et al. (2026) studied this question.

synapsesocial.com/papers/6a2f97e8a1cfeec490828f9ahttps://doi.org/10.11648/j.earth.20261503.11
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