| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 104 === Soil is a necessary element to humans. Plants and animals directly and indirectly rely on soil to get nutrition. However, heavy metal is a main pollution in soil. All metals are not equal to the biological efficiency and mobility in the environment. The purpose of this study is to research the comparison of zinc mobility in the soils with different depths and further to control the problem of soil pollution and evaluate the environmental remediation. The study takes 128 of soil samples from western farms in Taiwan including Taoyuran, Changhua and Tainan. First, use Aqua regia to do fully testing and perform extraction method of 0.1N HC1, 0.005M DTPA and 0.05M EDTA to get zinc extraction percentage and coefficient of distribution, Kd value. The final statistics show the three main points to affect Kd and soil properties are chemical properties, physical properties and biological properties sequentially. In chemical properties, the organic carbon is associated to Kd value by 0.0M EDTA extraction method. The zinc mobility in chemical properties with different depths presents different results.
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