跳到主要內容 :::

年度	113	專案性質	實驗性質
專案類別	研究專案	研究主題	調查
申請機構	國立臺灣大學	申請系所	環境工程學研究所
專案主持人	林郁真	職等/職稱	特聘教授
專案中文名稱	科學園區地下水體中短鏈與新穎全氟化合物之研究
中文關鍵字	全氟與多氟烷基物質, 新穎全氟化物, 短鏈全氟化物, 地下水, 流布
專案英文名稱	Occurrence on Short-Chain and Novel Per- and Polyfluoroalkyl Substances in the Groundwater of Science Parks
英文關鍵字	Per- and polyfluoroalkyl substances (PFAS), Novel PFAS, Short-chain PFAS, Groundwater, Occurrence
執行金額	820,000元
執行期間	2024/11/1 至 2025/11/30
計畫中文摘要	全氟及多氟化合物（PFAS）因其特性，被廣泛應用於各類產品中，對環境與人體健康構成潛在風險。隨著長鏈PFAS逐步遭到管制，短鏈與新穎PFAS作為為替代品，引起各界的高度關注。本研究針對中部科學園區周邊四口地下水監測井進行多深度採樣，分析16種PFAS濃度，以評估對地下水體的影響。樣品經由固相萃取法處理，並使用高效液相層析串聯質譜儀進行分析，搭配11種內標準品，偵測極限0.1–0.2 ppt，回收率介於73%至126%，展現高靈敏度與準確性。結果顯示，長鏈PFAS如PFOA與PFOS在所有井位中皆被檢出，其中最大濃度達50 ppt，短鏈PFAS中以PFBS濃度最高，達百ppt等級；新穎PFAS中則檢出FBSE，其僅於鄰近污水排放口的水井中被檢出，顯示排放源之關聯性。分層水樣分析亦發現，PFAS已明顯向下遷移，進入地下含水層。風險評估結果顯示，採樣點G0發現PFOA與PFOS合計超過我國環境部飲用水標準；另外，除了GenX外，所有監測化合物皆於各井位中被檢出，如依照美國健康建議值來看，在所有樣點中PFOA皆超過該值，而PFOS則有三處超過。儘管各井的Hazard Index低於1，但PFBS濃度普遍偏高亦值得關注。新穎PFAS雖未納入現行法規，然其廣泛檢出已突顯其風險。本研究為國內首例針對新穎PFAS於園區周邊地下水體中分布與滲入行為之系統性調查，對後續監測機制與風險管理具有重要參考價值。
計畫英文摘要	Per- and polyfluoroalkyl substances (PFAS) are extensively used in industrial processes and consumer products due to their remarkable chemical stability and water-repellent properties, but these same characteristics pose potential risks to both ecosystems and human health. As regulatory pressure has curtailed long-chain PFAS, industry has increasingly turned to short-chain and emerging PFAS alternatives—whose persistence and mobility in the environment remain a growing concern. In this study, we collected depth-profiled groundwater samples from four monitoring wells surrounding a central Taiwan science park to quantify sixteen PFAS compounds and assess the influence of a nearby wastewater treatment plant. Samples were prepared via weak anion-exchange solid-phase extraction and analyzed by HPLC-MS/MS against eleven isotopically labeled internal standards, achieving detection limits of 0.1–0.2 ppt and recoveries between 73% and 126%. Long-chain PFAS such as PFOA and PFOS were detected in every well, with maximum concentrations reaching 50 ppt, while among short-chain PFAS, PFBS appeared at the highest levels (hundreds of ppt). The novel PFAS FBSE was only found in wells closest to the discharge point, underscoring its source linkage. Geological profiling and layered sampling revealed clear PFAS migration into deeper aquifer zones. Risk assessment showed that combined PFOA and PFOS in samples from G0 sampling point exceeded Taiwan’s drinking-water standard (>50 ppt), and, by U.S. health advisory guidelines, PFOA surpassed recommended levels at all sites (with PFOS also exceeding thresholds at three locations). Although all hazard indices remained below 1, the generally elevated PFBS concentrations warrant close attention. While emerging PFAS are not yet regulated, their consistent detection highlights potential future exposure risks. This investigation represents the first systematic study of emerging PFAS distribution and transport in groundwater around a Taiwanese science park, offering critical insights for ongoing monitoring and risk-management strategies.