- 期刊
土壤電磁物理輔助指標之建立（一）：重金屬鎘在土壤中吸附滯留容量之快速估測
The Establishment of Electromagnetic Physics Auxiliary Indices (I): The Rapid Assessment of the Retention Capacity of Heavy Metal Cadmium in Soils
摘要
土壤對重金蟲之吸附能力常需要經由費時費力的實驗過程，才能窺知其概略狀況。本研究欲利用土壤基本理化性質分別與土壤電導度以及磁性量測數據相結合，以建立一數字化、快速而簡便的土壙重金屬吸附滯留容量之估測方法。於彰化縣的員林系、二林系、鹿港系、下水埔系、路口厝系等八個採樣點採土，分析其質地、總體密度、pH值、有機質含量、土壤電導度、磁化曲線以及八土樣對重金屬鎘的吸附容量，利用複因子迴歸分析找出這些性質中與重金屬吸附特性相關性最佳的因子。由分析結果顯示，重金屬的吸附量與傳統土壤的Ph值、粘粒含量、總體密度、有機質含量等四因子的複因子迴歸結果並不盡理想，但再加入第五項參數後，迴歸結果於統計上明顯改善，並且，此第五項參數若以往常被用來討論溶質吸附特性的土壤電導度性質代入，其迴歸結果並不如土壤電導度性質代入，其迴歸結果並不甘以磁性測量數據為第五項參數的迴歸結果。因此，我們可以壤pH、粘粒含量、總體密度、有機質含量，再加上第五項參數-磁性參數，來建立一套可有效評估土壤對重屬的吸附能身之方法。
並列摘要
There is usually a laborious and time-consuming experiment to catch on the retention capacity of heavy metal. This study utilizes soil property to combine with soil electrical conductivity (EC) and magnetism data separately, which propose to set up a numerical, convenient and speedy way to measure the retention capacity of soil. The study analysis the data of the texture, bulk density (B. D.), pH, organic matter, soil EC, magnetism data and the retention capacity for Cd of the eight soil series which from Yuanlin, Erhlin, Lukang, Shashuipu, Lukoutseu and Fengyuen try to use multiple-regression-analysis to find out the best correlated factor between these characters and retention capacity of heavy metal. The result presented the multiple-regression-analysis from the retention capacity of heavy metal and the pH, Clay, B. D, organic matter of traditional soil property is not as good as we thought, but when we add the fifth factor, the result of regression-analysis improved much. And also, if we put the soil EC for the fifth factor as we used to do so, the result of it is not as good as that we put the data of magnetism data. Therefore, we can conclude that in addition to soil pH, Clay, B.D and organic matter, the magnetism data is the best fifth factor of surveying the retention capacity of heavy metal in soil.