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研究了菜园土壤铜的吸附—解吸特性。结果表明 ,3种菜园土壤吸附 Cu2 +的量均随平衡液中Cu2 + 浓度的增加而增大 ,可用 L angmuir方程和 Freundlich方程来描述。由 Langmuir方程求得的菜园土壤对 Cu2 + 的最大吸附量和最大缓冲容量的大小顺序为 :黄松土 >江涂土 >粉泥土 ,菜园土壤对 Cu2 + 的解吸量和解吸率均随其吸附量的增加而增加 ,吸附量与解吸量之间呈显著或极显著线性正相关。
The adsorption-desorption characteristics of copper in garden soil were studied. The results showed that the amount of Cu2 + adsorbed by the three kinds of vegetable soils increased with the increase of Cu2 + concentration in the balance solution, which could be described by L angmuir equation and Freundlich equation. The order of maximum adsorption capacity and maximum buffer capacity for Cu2 + in the vegetable garden soil calculated by Langmuir equation is as follows: the content of desorption and desorption of Cu2 + in the soil of the soil in the order of pines, Increase and increase, the amount of adsorption and desorption was significant or very significant linear positive correlation.