稀土钇的生物富集效应研究

Study on bioaccumulation of rare earth yttrium

针对稀土钇矿开发残留物侵入土壤生态环境,选择蚯蚓作为土壤生态环境健康指示生物,采用人工土壤试验法研究稀土钇的生物富集效应。结果表明:稀土钇在蚯蚓体内具有富集性,蚯蚓对稀土钇的富集系数(BCF)最高可达0.54,并与土壤中稀土钇含量呈负相关性,富集21d后蚯蚓体内稀土钇含量趋于平衡。

In order to study the bioaccumulation effect of rare earth yttrium,earthworms were selected as indica⁃tors of soil ecological health,and artificial soil test was used to study the bioaccumulation effect of rare earth yttrium.The results:The BCF of rare earth yttrium in earthworms was up to 0.54,and there was a negative correlation between the BCF of rare earth yttrium and the content of rare earth yttrium in soil.The content of rare earth yttrium in earth⁃worms tended to balance after 21 days of enrichment.