摘要：重金属对水的污染日益加重，导致水资源可利用性降低、水域生态系统退化，研究利用植物吸收重金属很有必要。本文通过运用原子火焰吸收测出水中重金属Cu、Cr的量的变化，和狐尾藻中重金属的变化的出的结论是：狐尾藻在前3天所吸收水中Cu的量是最多的，也处理水中重金属Cu的效果也应该是最好的时期。狐尾藻在前6天所吸收水中Cr的量是最多的，也处理水中重金属Cr的效果也应该是最好的时期。狐尾藻对两种重金属Cu、Cr吸收的量并不是水中的初始浓度，还是有一点点小的偏差的，这跟水体本身自己的自净有关，有一小部分重金属被水体自身自净消化掉了，但主要的还是以狐尾藻的吸收为主。

关键词：重金属；狐尾藻；吸收

Abstract: Heavy metals in water pollution are increasing, leading to water availability decreases and water ecosystem degradation, it is necessary that Studying on absorption of heavy metals by plants. Conclusion is measured through the use of the atomic flame absorption of water, heavy metals Cu, Cr the amount of change, and changes of heavy metals in the Myriophyllum out: The Myriophyllum first three days to absorb the amount of water Cu is the largest, but also deal with the effect of water Cu is the best period. The Myriophyllum first 6 days absorb the amount of Cr is the largest, but also deal with the effect of heavy metals in water Cr is the best time.Myriophyllum absorb two kinds of heavy metals of Cu and Cr ,the amount is not water initial concentration, still have a little bit small deviation of this with the water body itself own the self-purification is related to heavy metals metals in a small portion of the water body itself self-purification to digest out thebut the main or the absorption of the Myriophyllum.

Key words: Heavy metal; Myriophyllum; absorb