| 铬污染土壤的导电性、频谱激电性和介电特性的实验结果 |
| 摘要点击 2943 全文点击 2774 投稿时间：2010-04-27 修订日期：2010-06-22 |
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| 中文关键词 铬污染土壤 污染浓度 含水率 电阻率 复电阻率 复介电常数 |
| 英文关键词 chrome-contaminated soil pollution concentration water content resistivity complex resistivity complex permittivity |
| DOI 10.13227/j.hjkx.20110322 |
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| 中文摘要 |
| 研究了铬污染土壤的导电性、激电性和介电性，给出了在不同含水率、不同浓度铬盐污染物的情况下，铬污染土壤样品的电阻率、复电阻率和复介电常数与污染物浓度及含水率变化关系的一些实验观测结果.土样中的观测结果表明，所有污染样品的电阻率、复电阻率幅值均随污染浓度和含水率的增加而减小；但对反映土壤样品容性的复电阻率相位参数而言，则有随污染浓度和含水率增加先减小后增大的趋势；并于频率20 kHz前后呈现先降低后升高的趋势.复介电常数的实部和虚部随含水率和随污染浓度的增加而变大.结果表明，铬盐污染物浓度和含水率为共同影响污染土壤电性参数的主要影响因素. |
| 英文摘要 |
| The resistivity, complex resistivity and complex permittivity of the chrome-contaminated soil were studied. Under the different pollution concentration and water content in the soil samples conditions, the relations between the resistivity, complex resistivity and complex permittivity of the chrome-contaminated soil and water content and the concentration of pollution were analyzed. When adding chrome pollution with different concentrations and water content, the experimental results show that the resistivity and complex resistivity of all the soil samples decreased with the pollution concentration and water content increased; but the phase of complex resistivity, which reflects the soil's capacitance, decreased below the 20 kHz and increase above the 20 kHz frequency. The real part and imaginary part of complex resostivity increased with the increase of pollution concentration and water content. The concentration of chrome pollutions and water content were the two main factor to determine the soil electrical characteristics. |
