稀土元素的生物安全性探讨

A research on the biological security of rare earths

采用微核检测、单细胞凝胶电泳、同工酶等技术研究了稀土元素遗传毒理效应的有关结果。大量试验表明,稀土元素断裂DNA的能力,因而在一定浓度范围内,稀土元素确有致突变性。稀土元素在土壤中可专性吸附、不可降解,在动植物和人体皆有累积效应,因此稀土元素的生物安全性值得深入探讨。

The research results of the genetic toxicity effect were generally analyzed by means of micronucleus,single cell gel electrophoresis and isozymes,etc.Nunber of tests indicated that rare earths had the ability to cleave the nucleic acids.As a result,in certain concentration range,rare earths had the mutagenicity_resulting effcts.Rare earths was specifically absorbed,undecomposed in soil and accumulated in animals,plants and human body.Therefore,the biological security of rare earths should be thoroughly discussed.