华北农学报 ›› 1996, Vol. 11 ›› Issue (1): 81-86. doi: 10.3321/j.issn:1000-7091.1996.01.015

所属专题: 土壤肥料

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土壤锌吸附动力学

陆文龙1, 潘洁1, 薛家骅2   

  1. 1. 天津市土壤肥料研究所, 天津 300192;
    2. 南京农业大学基础科学学院
  • 收稿日期:1995-07-20 出版日期:1996-03-28

A Study on the Kinetics of Zinc Soxption and Desorption in Soil

Lu Wenlong1, Pan Jie1, Xue Jiahua2   

  1. 1. Tianjin Institute of Soil & Fertilizer, Tianjin 300192;
    2. Nanjing Agricultural university
  • Received:1995-07-20 Published:1996-03-28

摘要: 采用流动法研究了红壤、黄棕壤锌吸附动力学特性,重点研究了溶液pH,锌溶液的浓度、温度对两种土壤锌吸附动力学特性的影响。实验结果表明:溶液pH、锌的浓度对土壤锌吸附动力学影响明显;两种土壤对锌的吸附表观上可分为化学吸附和物理吸附。0.05mol·L-1CaCl2解吸试验表明,Zn-Ca交换几乎完全可逆。

关键词: 动力学, 吸附, 解吸, 土壤,

Abstract: The kinetics of Zn sorption. and desorption in red earth and yellow-brown earth was investigated using a constant flow leaching method. Attentions were focused mainly on the effects of the concentration of added Zn, pH value and the ambient temperature on the kinetics of Zn sorption and desorption in the two soils. The experimental results indicated that the kinetic characteristics of Zn sorption in the two soils were affected obviously by pH value and the concentration of added Zn. The mechanism of Zn sorption in the two soils could be divided apparently into chemsorption and physical-sorption. Tie result of desorptive experiment with 0.05 mo1L-1CaC1z indicated that Zn-Ca exchange was almost reversible.

Key words: Sorption, Kinetics, Desorption, Soil, Zinc

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引用本文

陆文龙, 潘洁, 薛家骅. 土壤锌吸附动力学[J]. 华北农学报, 1996, 11(1): 81-86. doi: 10.3321/j.issn:1000-7091.1996.01.015.

Lu Wenlong, Pan Jie, Xue Jiahua. A Study on the Kinetics of Zinc Soxption and Desorption in Soil[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1996, 11(1): 81-86. doi: 10.3321/j.issn:1000-7091.1996.01.015.

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