赤泥基颗粒对污染土壤中铅锌的修复研究

赤泥基颗粒对污染土壤中铅锌的修复研究(9000字)
摘 要：该研究主要是运用tessier五步提取法对土壤以及植株中重金属的提取，再利用火焰原子吸收法测定土壤中的铅锌在不同时期，不同形态的变化，分析赤泥颗粒对土壤重金属铅锌的影响，为重金属铅锌污染土壤修复提供一套可行方案。实验结果表明30d时污土中的铅锌含量比5d时污土中铅锌含量有所降低，土样在5d、20d、30d这段时间，交换态铅在加1%赤泥处的降幅最大分别为32.4%、37.8%、33.3%，交换态锌在加5%赤泥处的降幅最大分别为86.9、99.9%、90.1%,说明赤泥颗粒对土壤铅锌具有很好的钝化作用。
关键词：土壤；赤泥；修复；铅；锌

Study on the Effect of Pb and Zn in the contaminated soil by using red mud based particle
Abstract: This research is mainly to make use of tessier five of the extraction of heavy metals in soil and plant extract, reuse flame atomic absorption spectrometry zinc in the soil in different times and different forms of change, analysis red mud particle on the influence of soil heavy metal lead and zinc for heavy metal lead and zinc remediation work provides a feasible scheme,experimental results indicate that when the dirt 30d Pb and Zn content in soil pollution than 5d Pb and Zn content when soil is reduced, soil samples in the 20d and 30d 5d, this time, exchange state lead in add 1% drop in red mud the largest respectively32.4%、37.8%、33.3%, 1% Zn plus 5% in red mud in the biggest declines, respectively86.9、99.9%、90.1%, that red mud of soil particle zinc has very good passivation effects.
Key words: Soil；Red mud; Repair；Pb; Zn