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<p>Polonium released from lead–bismuth reactors may be retained mainly by nearby soils and nearshore sediments. Te(IV) was used as a non-radioactive surrogate and examined in two soils and a nearshore muddy sediment collected near a planned site. Batch tests tracked uptake to an operational equilibrium. A standardized sequential extraction partitioned sorbed Te among mobility-related pools, and XPS detected Te on reacted surfaces with shifts in C–O components. The muddy sediment showed the strongest retention and a greater shift toward the oxidizable-associated pool, indicating marked differences in operational retention strength and potential mobility among matrices.</p>

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Site-specific retention behavior of Te(IV) as a polonium surrogate in soils and nearshore sediment near a proposed lead–bismuth reactor site

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Junyang Zeng,
  • Jiang Zhou,
  • Zhihao Liu,
  • Jiayu Zhou,
  • Manxia Zhu,
  • Yujia Lin,
  • Zibo Gao,
  • Huiling Wang,
  • Peng Lin,
  • Hanyu Wu,
  • Muyi Ni

摘要

Polonium released from lead–bismuth reactors may be retained mainly by nearby soils and nearshore sediments. Te(IV) was used as a non-radioactive surrogate and examined in two soils and a nearshore muddy sediment collected near a planned site. Batch tests tracked uptake to an operational equilibrium. A standardized sequential extraction partitioned sorbed Te among mobility-related pools, and XPS detected Te on reacted surfaces with shifts in C–O components. The muddy sediment showed the strongest retention and a greater shift toward the oxidizable-associated pool, indicating marked differences in operational retention strength and potential mobility among matrices.