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中文摘要：
采用批实验法对沈阳张士灌区2种不同重金属污染负荷的土壤（A清洁土壤；B高污染土壤）中不同浓度组合的Cd^2＋和Pb^2＋的吸附．解吸动力学行为进行比较研究．结果表明，清洁土壤A对Cd^2＋和Pb^2＋的吸附能力高于高污染负荷土壤B．Elovich方程是描述这2种土壤Cd^2＋和Pb^2＋吸附动力学行为的最优模型，其次为双常数方程，最差模型是一级动力学方程．2种土壤Cd^2＋、Pb^2＋的解吸速率随重金属初始浓度增加而增加，随解吸时间的延长而不断降低．描述这2种土壤Cd^2＋、Pb^2＋解吸动力学过程的最优模型为Elovich方程，其次为双常数方程，而一级动力学方程拟合效果不佳．
英文摘要：
Sorption-desorption dynamic behavior by the batch method on two different metal Zhangshi irrigation area in Shenyang. The of Cd, Pb with different concentrations was studied burden soils （ A ： clean soil; B ： high polluted soil） of results indicated that the sorption capacity of clean soil to Cd^2＋ and Pb^2＋ was larger than that of higher metal burden soil. Elovich equation was the best model to describe the sorption kinetics of Cd^2＋ and Pb^2＋ , and then was two-constant equation,the worst model was first-order dynamics equation. The desorptive rates of Cd^2＋ and Pb^2＋ in two soils were increased with the higher initial concentrations of Cd^2＋ and Pb^2＋ in the treatments, and decreased with the increasing desorpive time. Elovich equation was the optimal model to describe the desorption kinetics of Cd^2＋ and Pb^2＋ in the two soils, and then was twoconstant equation, while the relative effect of first-order dynamics equation was not good.
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