土壤重金属生物可利用性的研究进展

Review on Bioavailability of Heavy Metal in Soil

当前,重金属的生物可利用性是土壤化学、植物营养学、环境科学等学科研究的热点和难点。大量的研究表明仅用某一重金属的总量来衡量重金属的污染程度是不合理的,只有被生物吸收利用的那部分才是衡量重金属污染程度的有效部分。由于当前对生物可利用性的测定还没建立统一的标准,所以在参阅大量的国内外文献资料的基础上对重金属的生物可利用性概念、当前研究方法以及今后研究的方向做一个综述以供研究者参考。

At present,the biological availability of heavy metal is the hot topic in the research of soil chemistry,plant nutrition and environment sciences.Lots of studies have shown that it is not reasonable to use the total amount of certain heavy metal to measure the contamination.Detecting the proportion absorbed by the creatures is the only effective measurement.However,no criterion has been developed.So,in this paper,the status quo of research concerning the biological availability of heavy metal,its method and future research are summarized as references for the researchers based on large amount of literatures at home and abroad.