摘要
采用室内培养方法,研究了6种作物种苗对水体中铅的去除作用。分析表明,在所选择的实验条件下,采用种苗过滤可以在72h内使水体中铅由100mg·L-1迅速减少至5mg·L-1以下。在向日葵、豌豆、蓖麻等植物幼苗的根中分别积累了高达91.6mg·g-1、40.7mg·g-1和52.8mg·g-1的铅,玉米、高粱也表现出一定的根铅积累与降低水体中铅浓度的作用。基于对实验结果进行的对比和讨论,提出选择具有“重金属超量积累倾向”的传统作物种苗进行环境水体中重金属铅污染的植物修复具有良好的应用前景。
In this article, six kinds of crop seedlings were researched for removing of Pb from water with blastofiltration method. At the selected experiment conditions, the results showed that in 72 hours, the concentration of 100 mg Pb·L-1 can be down to below 5mg Pb·L-1. In the dry roots of sunflower, pea, castor-oil plant,Pb can be accumulated to 91.6, 40.7 and 52.8 mg·g-1, respectively, while corn, Chinese sorghum exhibited an ability for accumulation of Pb in the roots too. It may be suggested that several traditional crop seedlings with “super-accumulation tendency” have a good blastofiltration application prospects in phyto-remediation of Pb pollution in water.
出处
《农业环境保护》
CAS
CSCD
北大核心
2002年第6期499-501,共3页
Agro-Environmental Protection
基金
天津市自然科学基金资助项目(00360511)
