Rising temperatures decrease rare earth element bioavailability and ecological risk in coastal sediments

文献类型： 外文期刊

第一作者： Gu, Yang-Guang

作者： Gu, Yang-Guang;Huang, Hong-Hui;Gao, Yanpeng;Jordan, Richard W.;Jiang, Shi-Jun

作者机构：

关键词： Rare earth elements; Bioavailability; Ecotoxicological risk; Temperature effects; Diffusive gradients in thin films; Coastal sediments

期刊名称：ENVIRONMENTAL CHEMISTRY LETTERS （ 影响因子：20.4； 五年影响因子：18.9 ）

ISSN： 1610-3653

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Rare earth elements are sedimentary pollutants of increasing health concern, yet the effect of global warming on their bioavailability and toxicity is unknown. To test this, we applied the diffusive gradients in thin films technique to assess the bioavailability of 15 rare earth elements, including lanthanides and yttrium, in sediments at temperatures ranging from 0 to 40 degrees C. We modeled the ecotoxicological risk to aquatic organisms using the species sensitivity distribution-probabilistic risk assessment-inclusion-exclusion principle. Results show that the bioavailability of all rare earth elements decreases by 40% to 70% as temperature increases from 0 to 40 degrees C, indicating reduced mobility and enhanced sediment adsorption. Similarly, the calculated ecotoxicological risk is reduced from 1.75 to 0.08%. This is the first evidence of temperature-driven attenuation of rare earth element risk in sediments, suggesting that global warming should decrease the toxicity of some rare earth elements.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序