化学淋洗法修复重金属污染土壤效果研究

Research on Chemical Washing Remediation Effect of Heavy Metal Contaminated Soils

在国内外相关研究的基础上,文章研究化学淋洗修复技术在重金属污染土壤修复方面的运用.用浓酸消解土样并用火焰原子吸收法测定土壤中重金属含量,选用土壤柱作淋洗实验,分析去离子水和EDTA溶液两种淋洗剂对Cu、Zn、Pb、Cd四种重金属的淋洗效率,并对化学淋洗修复效果进行比较.

This article discusses application on chemical washing remediation techniques of heavy metal contaminated soils based on the study from overseas and domestic. The soil samples are digested using concentrated acid and the heavy metals contented in soils are measured with flame atomic absorption spectrometry （FAAS）. After soil column test, this article analyzes the washing efficiency of the deionized water and the EDTA solution to Cu, Zn, Pb and Cd, and compares the chemical washing remediation effect.