铬污染土壤的导电性、频谱激电性和介电特性的实验结果  

Experiment Results of Conduction,Spectral Induced Polarization and Dielectric Characteristics for Chrome-Contaminated Soil

作　　者：能昌信[1,2] 刘玉强[2] 刘豪睿[2] 董路[2] 

机构地区：[1]山东工商学院计算机系,烟台264005 [2]中国环境科学研究院固体废物污染控制技术研究所,北京100012

出　　处：《环境科学》2011年第3期758-765,共8页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2009AA063101);中央级公益性科研院所基本科研业务费专项(2009KYYW04)

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.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.

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 

分 类 号：X53[环境科学与工程—环境工程]