JOURNAL ARTICLE

Investigation of short-term chemical changes in stable ruthenium added to soil by using X-ray absorption fine-structure analysis.

  • Published In: Radiation Protection Dosimetry, 2024, v. 200, n. 16-18. P. 1744 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Unno, Yusuke; Takeda, Akira 3 of 3

Abstract

This article focuses on the environmental behavior of radioactive ruthenium (Ru) released from spent nuclear fuel reprocessing plants, specifically examining the chemical form changes of stable Ru added to soil and soil solutions. Using X-ray absorption fine-structure (XAFS) analysis, the study found that ruthenium tetroxide (RuO4) rapidly converts to tetravalent ruthenium dioxide (RuO2) upon contact with soil, while ruthenium(III) nitrosyl nitrate (Ru(NO)(NO3)3) and RuO2 remain chemically stable for at least five days. Ruthenium chloride (RuCl3) shows changes in its ionic structure influenced by soil, despite no immediate valence change. These findings highlight the importance of identifying and monitoring the specific chemical forms of radioactive Ru deposits to better understand their environmental fate and migration in soil.

Additional Information

  • Source:Radiation Protection Dosimetry. 2024/11, Vol. 200, Issue 16-18, p1744
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2024
  • ISSN:01448420
  • DOI:10.1093/rpd/ncae083
  • Accession Number:180905369
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