| 锌在石灰性土壤中的吸附动力学初步研究 |
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| 引用本文： | 林玉锁,薛家骅.锌在石灰性土壤中的吸附动力学初步研究[J].环境科学学报,1989,9(2):144-148. |
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| 作者姓名： | 林玉锁 薛家骅 |
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| 作者单位： | 南京农业大学
(林玉锁)，南京农业大学(薛家骅) |
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| 基金项目： | 国家自然科学研究基金项目 |
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| 摘 要： | 采用恒流淋洗法研究了外加锌在石灰性土壤中的吸附动力学特性.通过对石灰性土壤样品,人工模拟样品和纯CaCO_3物质吸附锌的动力学实验,结果衰明,石灰性土壤中的CaCO_3组分是外加锌的主要载体,且被CaCO_3组分所保持的锌不易被0.01mol/LCaCl_2溶液解吸下来。还拟用了几种动力学方程(一级动力学方程,Elovich方程和抛物线扩散方程)对本实验得到的动力学曲线进行描述和数据处理,结果表明石灰性土壤吸附锌的动力学特征主要由土壤中CaCO_3组分决定的。
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| 关 键 词： | 动力学 吸附 石灰性土壤 锌 |
| 收稿时间： | 1988/4/16 0:00:00 |
KINETICS OF Zn ADSORPTION IN CALCAREOUS SOILS |
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| Lin Yusuo and Xue Jiahua.KINETICS OF Zn ADSORPTION IN CALCAREOUS SOILS[J].Acta Scientiae Circumstantiae,1989,9(2):144-148. |
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| Authors: | Lin Yusuo and Xue Jiahua |
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| Institution: | Nanjing Agricultural University |
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| Abstract: | The kinetics of Zn adsorption in calcareous soil was studied using a constant flow leaching method with raw soil, CaCO3 removed soil, pure CaCO3 and artificial soil samples, The results of the experiments indicated that CaCO3 is a major adsorbent for Zn in calcareous soil and the CaCO3 adsorbed Zn is difficult to be desorbed with 0.01 mol/L CaCl2. The first-order, Elovich and parabolic diffusion equations were applied to fit the experimental data. |
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| Keywords: | Kinetics Zn adsorption soil calcareous soil |
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