| 用电导频散法研究Cl-、SO42-和H2PO4-阴离子与土壤的相互作用 |
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| 引用本文： | 李成保,季国亮.用电导频散法研究Cl-、SO42-和H2PO4-阴离子与土壤的相互作用[J].土壤学报,1999,36(1):54-60. |
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| 作者姓名： | 李成保 季国亮 |
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| 作者单位： | 中国科学院南京土壤研究所 |
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| 基金项目： | * 国家自然科学基金资助项目,批准号49471041 |
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| 摘 要： | 本文介绍了采用电导频散装置测量分别含有10-4mol/LHCl、5×10-5mol/L H2SO4和10-4mol/L H3PO4的黄棕壤、棕壤、黑土和砖红壤悬液(20-30g/kg)的电导频散曲线,频散曲线上均呈现频率范围相当宽的坪区,频散曲线的特性分析结果表明,黄棕壤和棕壤在3种酸溶液中的始散频率(0.6-1kHz)低于黑土悬液(16-28kHz),而砖红壤的始散频率最高(25-47kHz;Cl-、SO42-和H2PO4-离子与4种土壤的相对亲合力(REC1.5/RECtp-1)顺序为Cl- < SO42- < H2PO4-,在不同土壤之间的顺序则随酸溶液而异.
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| 关 键 词： | 电导频散曲线 始散频率 相对亲合力 土壤 |
| 收稿时间： | 1998/2/10 0:00:00 |
| 修稿时间： | 1998/8/21 0:00:00 |
INTERACTIONS OF Cl-, SO42- AND H2PO4- ANIONS WITH SOILS AS INFERRED FROM CONDUCTIVITY DISPERSION |
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| Li Cheng-bao and Ji Guo-liang.INTERACTIONS OF Cl-, SO42- AND H2PO4- ANIONS WITH SOILS AS INFERRED FROM CONDUCTIVITY DISPERSION[J].Acta Pedologica Sinica,1999,36(1):54-60. |
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| Authors: | Li Cheng-bao and Ji Guo-liang |
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| Institution: | Institute of Soil Science, Academia Sinica, Nanjing 210008;Institute of Soil Science, Academia Sinica, Nanjing 210008 |
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| Abstract: | In the present work, the electrical conductivity of yellow brown earth, brown earth, black soil and latosol suspensions in 10-4mol/L HCl or 5×10-5mol/L H2S04 or 10-4 mol/L H3P04 was measured with an apparatus with adjustable frequency.The results indicated that all the soil suspensions showed a conductivity dispersion phenomenon in all the acids.On all the conductivity-frequency curves a plateau region with a larger range of frequency appeared. |
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| Keywords: | Conductivity dispersion curve Threshold frequency Relative affinity |
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