土壤重金屬含量變化之評估：（二）模試之應用

The Assessment for Changes of Heavy Metal Content in Soils: II. Model Application

于迺文(N. W. Yu) ； 林正錺(C. Lin)

《土壤與環境》 3卷3期 (2000/09) Pp. 257-269

https://doi.org/10.30058/SE.200009.0008

摘要

為了解土壤中污染物變化，並達到簡單方便又快有效評估之目的，本研究嘗試以一簡單模試dC / dt = Rin – kout × C來分析估簡土壤中重金屬含量之增減，式中dC / dt代表單位時間重金屬在土壤中的含量變化，Rin代表單位時間進入土壤中之重金屬含量；亦即輸入速率，kout × C代表單位時間由土壤中移出之重金屬含量；亦即移出速率。由參數Rin之做算可評估重金屬由環境進入土壤之狀況，由Rin / (kout × C)比值；亦即趨勢指標，則可了解重金屬在土壤中累積的情形。本研究並以鎘為對象，將模式實際應用於本省不同調查範圍尺度地區之評估。

關鍵字

土壤 ； 重金屬 ； 鎘 ； 模式 ； 評估

並列摘要

We tried to use a simple model dC / dt = Rin – kout × C to analyze and evaluate the change of heavy metals in soils to understand the change of soil pollutants and achieve an objective of simple, convenient, fast, and effective assessment. In the equation, dC / dt means heavy metal content changes in the soil per time, and Rin means heavy metal input to the soil per time; that is the income rate, and kout × C means heavy metal output to the soil per time; that is the removed rate. We could assess heavy metal into the soil from the environment by calculating Rin, and known the accumulation of heavy metal in the soil from the ratio of Rin / (kout × C), that is the Tendency Index. We took Cd as a pollutant and used the model to assess the different investigated scale areas in Taiwan.

並列關鍵字

soil ； heavy metal ； cadmium ； model ； assessment