中文摘要：

通过对2种重金属元素（Cu、Zn）在菜园土中的吸附与解吸特性的比较研究,结果表明：土壤对铜的吸附能力大于锌,由Langmuir方程计算得到的Cu、Zn的最大吸附量（Xm）分别为1667 mg/kg、1112 mg/kg：土壤吸附态铜、锌的量与其解吸量之间呈现出显著的线性相关,土壤吸附态锌的解吸收率可达8.1%～17.8%,而土壤吸附态铜的最大解吸率小于5%,可见,土壤对铜的固定能力强于锌。

英文摘要：

The adsorption and desorption characteristics of two heavy metal element was studied in this paper.The results showed that the soil adsorbed more copper than the zinc,the maximum adsorption values（Xm） that were obtained from the simple Langmuir model were 1667 mg/kg soil and 1112 mg /kg soil,respectively,for copper and zinc;the qunitity of adsorbed copper zic in soils were remarkble linearcorrelative to theirdesorption rate of adsorrbed copper and zinc in soils were 8.1%～17.8%and less than 5% respectively,indicating that the soil had a greater affinity for Copper than the Zinc.