頁籤選單縮合
題名 | 土壤特性對井間介入性示蹤劑試驗之影響=Analysis of the Impacts of Soil Characteristics to Partitioning Interwell Tracer Tests |
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作 者 | 莊淑惠; 林明德; 吳偉智; | 書刊名 | 興大工程學刊 |
卷期 | 19:2 2008.07[民97.07] |
頁次 | 頁111-123 |
分類號 | 445.2593 |
關鍵詞 | 有機質; 酸鹼值; 井間介入性示蹤劑試驗; Organic matter; pH; Partitioning interwell tracer test; |
語文 | 中文(Chinese) |
中文摘要 | 臺灣地區近年來加油站之管線、貯槽發生油品洩漏的問題迭有所聞,而當此類事件發生時,準確的偵測出污染物之所在位置及含量是整治工作的首要步驟。油品係非水相液體(Nonaqueous Phase Liquids, NAPLs),而井間介入性示蹤劑試驗 (Partitioning Interwell Tracer Test, PITT)乃目前偵測NAPLs污染的一種新方法,準確度也相當不錯。有鑑於許多偵測技術應用於實場時,往往因自然環境條件的影響而導致效果不佳。因此本研究以遭柴油污染的土壤為研究對象,探討土壤中之有機質及水質之酸鹼度對PITT偵測結果的干擾情形。結果顯示:於理想條件下PITT試驗對土樣中柴油之殘餘飽和度具有準確的推估能力,誤差約在10%;然而當土壤中含有機質時,由於有機質對示蹤劑有吸附、介入等反應現象,使得示蹤劑之介入性明顯受到影響,而且隨著有機質含量增多,干擾程度亦隨之增大,所導致之誤差可達270%。此一影響情形與吸附現象之特性相似。另經由調整水質之酸鹼度所進行的研究發現,不論是略酸性或略鹼性水質對PITT試驗之準確度並無明顯之影響。 |
英文摘要 | This research applies the PITT technique in a series of column tests to detect and estimate the residual saturation of diesel in the sand-packed columns. Due to the fact that the differences between the field conditions and laboratory environments may result indifferent conclusion, this research investigates the impacts of organic matters of soil and the pH value in groundwater to the PITT results. The results show that PITT can accurately estimate the diesel's residual saturation under ideal conditions. The errors are around 10%. However, when organic matters introduced in the soil, the adsorption and partition behaviors of the tracers are significantly affected, resulted in errors as high as 270%, and higher impacts were observed when more organic matters exist. For the PITT results with pH value of groundwater ranges from 5 to 9, no significant differences were observed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。