隨著全球二氧化碳排放量持續增加，如何有效降低大氣中二氧化碳濃度，並將其進行長期且穩定的封存，已成為因應氣候變遷的重要議題之一。在不同的二氧化碳封存方式中，礦化封存可使二氧化碳與岩石中所釋出之金屬陽離子進行反應，進一步形成穩定之固態碳酸鹽礦物。玄武岩中含有鈣、鎂及鐵等可參與礦化反應之元素，因此被認為是適合進行二氧化碳礦化封存之岩石材料。
本研究建立一固–液–氣三相混合反應系統，探討在不同反應條件下，岩石中金屬離子之釋出行為以及鐵元素之變化。首先，本研究利用X光繞射分析（X-ray Diffraction, XRD）以及掃描式電子顯微鏡搭配能量散佈光譜分析（Scanning Electron Microscopy with Energy Dispersive Spectroscopy, SEM-EDS），了解玄武岩及蛇紋岩等固體樣品性質；接著，利用感應耦合電漿發射光譜儀（Inductively Coupled Plasma Optical Emission Spectrometry, ICP-OES）分析反應溶液中鈉、鎂、鈣、鋁及鐵等金屬離子之濃度變化，並搭配pH值量測了解反應溶液之酸鹼性；最後，使用原位X光吸收光譜（X-ray Absorption Spectroscopy, XAS），比較不同條件下鐵元素Fe K-edge XANES光譜之變化。由XRD以及SEM-EDS分析結果可知，澎湖玄武岩以及蛇紋岩兩者皆可能提供礦化反應所需金屬陽離子；SEM影像亦顯示，玄武岩為一不均質之岩石材料。ICP-OES分析結果顯示，鈉、鎂及鈣離子濃度多會隨著反應時間增加而上升；鐵與鋁離子則在特定條件下呈現濃度下降之趨勢；在原位XAS分析結果中，不同水岩比、環境水體以及壓力條件下之Fe K-edge XANES光譜結果顯示鐵元素之主要化學狀態並未出現明顯變化。
綜觀上述，本研究為一結合固相分析、水化學分析以及原位光譜分析的三相反應實驗，旨為提供台灣澎湖玄武岩應用於二氧化碳礦化封存進行評估之資料。

This study established a solid–liquid–gas three-phase reaction system to investigate metal ion release during carbon mineralization. Penghu basalt and serpentinite were analyzed using XRD and SEM-EDS to characterize their mineral composition and surface properties. ICP-OES and pH measurements were applied to evaluate changes in Na, Mg, Ca, Al, and Fe concentrations in solution. In situ XAS was further used to compare Fe K-edge XANES spectra under different water-to-rock ratios, water types, and pressure conditions. The results showed continuous release of Na, Mg, and Ca, while Fe and Al exhibited decreasing trends under specific conditions. Overall, the major chemical state of Fe remained relatively stable.

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