Scholarlink

<p>The growing demand for yttrium (Y) and ytterbium (Yb) has raised concerns about their potential accumulation in soil and associated ecological risks. This study comparatively evaluated the ecotoxic effects of Y and Yb on key biological indicators of ordinary chernozem fertility under controlled laboratory conditions. Soil was treated with Y and Yb at 3, 30, and 300 times their background concentrations. Increasing metal concentrations significantly inhibited radish seed germination, root growth, <i>Azotobacter</i> sp. abundance, and catalase, dehydrogenase, and cellulolytic activities. Both elements exhibited similar ecotoxicological patterns, with the strongest suppression observed 10&#xa0;days after contamination and partial recovery after 90&#xa0;days. Among all indicators, <i>Azotobacter</i> sp. abundance was the most sensitive, while dehydrogenase activity proved to be the most informative parameter for assessing soil contamination. The soil-specific threshold concentrations determined for ordinary chernozem were 250&#xa0;mg&#xa0;kg<sup>−1</sup> for Y and 20&#xa0;mg&#xa0;kg<sup>−1</sup> for Yb. These findings provide a scientific basis for environmental monitoring and risk assessment of Y and Yb accumulation in agricultural soils.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A comparative assessment of yttrium and ytterbium ecotoxicity on biological indicators in chernozem

  • 期刊论文

  • 发表日期：

    2026年6月2日

查看全文
  • N. Tsepina,
  • A. Timoshenko,
  • S. Kolesnikov,
  • T. Minnikova,
  • A. Kuzina,
  • N. Evstegneeva,
  • K. Kazeev,
  • T. Minkina,
  • S. Tarigholizadeh,
  • T. Bauer,
  • S. Sushkova

摘要

The growing demand for yttrium (Y) and ytterbium (Yb) has raised concerns about their potential accumulation in soil and associated ecological risks. This study comparatively evaluated the ecotoxic effects of Y and Yb on key biological indicators of ordinary chernozem fertility under controlled laboratory conditions. Soil was treated with Y and Yb at 3, 30, and 300 times their background concentrations. Increasing metal concentrations significantly inhibited radish seed germination, root growth, Azotobacter sp. abundance, and catalase, dehydrogenase, and cellulolytic activities. Both elements exhibited similar ecotoxicological patterns, with the strongest suppression observed 10 days after contamination and partial recovery after 90 days. Among all indicators, Azotobacter sp. abundance was the most sensitive, while dehydrogenase activity proved to be the most informative parameter for assessing soil contamination. The soil-specific threshold concentrations determined for ordinary chernozem were 250 mg kg−1 for Y and 20 mg kg−1 for Yb. These findings provide a scientific basis for environmental monitoring and risk assessment of Y and Yb accumulation in agricultural soils.