农田黑土铜、锌吸附解吸特性分析  

Adsorption-Desorption Characteristics of Cu and Zn in Phaeozem Farmland Soils

作　　者：冯军[1] 孟凯[2] 崔晓阳[1] 徐金忠[1] 

机构地区：[1]东北林业大学,哈尔滨150040 [2]黑龙江大学

出　　处：《东北林业大学学报》2009年第10期60-62,共3页Journal of Northeast Forestry University

基　　金：国家科技基础条件平台建设项目(2006DKA32300-04)

摘　　要：研究了铜、锌在双城、海伦、方正农田黑土中的吸附解吸行为。3地土壤吸附Cu2+、Zn2+的量均随着平衡液中Cu2+、Zn2+质量浓度的增加而增大。双城、海伦、方正农田黑土对Cu2+的吸附解吸行为用Freundlich方程拟合最佳,吸附态Cu2+的解吸有明显滞后现象,而且3地土壤吸附态Cu2+的解吸率均较低。供试土壤对Zn2+的吸附行为用Freundlich方程拟合最佳,而对Zn2+的解吸行为用Langmuir方程拟合最佳。An experiment was conducted to study the adsorption-desorption characteristics of copper and zinc in phaeozem farmland soils in Shuangcheng, Hailun and Fangzheng of Heilongjiang Province. Cu^2＋ and Zn^2＋ amounts adsorbed by the phaeozem farmland soils enhanced with the initial concentrations of Cu^2＋ and Zn^2＋ in equilibrium liquid increasing. The adsorption-desorption process of Cu^2＋ in the phaeozem farmland soils could be well expressed by Freundlieh equation, and desorption of the adsorbed Cu^2＋ had an obvious lag period, moreover, the desorption ratios of Cu^2＋ in the phaeozem farmland soils were low. Freundlich equation could well describe the adsorption process of Zn^2＋ , but Langmuir equation could well describe the desorption process of Zn^2＋.

关 键 词：铜 锌 吸附—解吸 黑土 

分 类 号：S153[农业科学—土壤学]