| 复介电常数在水土污染监测中的应用研究 |
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| 引用本文： | 刘永成,李杰,田跃,李建丽,许洪彦.复介电常数在水土污染监测中的应用研究[J].环境科学与技术,2006,29(Z1):34-36. |
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| 作者姓名： | 刘永成 李杰 田跃 李建丽 许洪彦 |
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| 作者单位： | 北京科技大学物理系,北京,100083 |
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| 摘 要： | 采用短路同轴线法测量了淀粉聚乙烯醇共混体样品,在含水率、离子浓度不同时的复介电常数,研究了频率、离子浓度、含水率与相对复介电常数的关系。结果表明,淀粉PVA复介电常数的实部对含水率很敏感,虚部在500~700MHz频段随含盐量升高呈对数增加,这为利用测量相对复介电常数进行水土系统离子污染监测,提供了可能和实验依据。
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| 关 键 词： | 复介电常数 同轴线法 含水率 离子浓度 |
| 文章编号： | 1003-6504(2006)增-0034-03 |
| 修稿时间： | 2006年1月9日 |
A Study of Water and Soil Contamination Monitoring Using Complex Permittivity |
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| Liu Yong-cheng,Li Jie,Tian Yue,Li Jian-li,Xu Hong-yan.A Study of Water and Soil Contamination Monitoring Using Complex Permittivity[J].Environmental Science and Technology,2006,29(Z1):34-36. |
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| Authors: | Liu Yong-cheng Li Jie Tian Yue Li Jian-li Xu Hong-yan |
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| Abstract: | The relative complex permittivity of Starch/Polyvinyl alcohol blend sample was measured with short circuit coaxial line method in different water content and ion concentration.Relationships between complex permittivity and frequency,ion concentration,water content were studied.The results showed that the real part of relative complex permittivity was sensitive to water content while imaginary part of complex permittivity increased logarithmically with the ion concentration in frequency band from 500MHz to 700MHz.As a result,it may have potential for detecting ion contamination in water and soil system. |
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| Keywords: | complex permittivity coaxial line water content ion concentration |
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