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FTIR 圖譜與含強酯羰基和多重 C-O 伸縮帶的小型含氧脂肪族材料最一致。最近的譜庫名稱是 1-methoxypropan-2-yl acetate,但譜庫匹配質量幾乎不具區分性,且無直接或相關文獻支持確認該確切化合物。因此,更廣泛地歸類為含氧酯類有機材料是該樣品最化學上可支持的結論。
建議的下一步: Re-run the FTIR with careful background subtraction and confirm whether the 2280 cm-1 band persists in the sample spectrum. Check for ester confirmation by comparing the carbonyl region near 1736 cm-1 and the C-O region from about 1250 to 1000 cm-1 against an authentic spectrum of 1-methoxypropan-2-yl acetate. If the material is volatile, verify by GC-MS to determine whether a single low-molecular-weight ester dominates. If mixture is suspected, combine FTIR with GC-MS or headspace GC-MS to separate the main oxygenated component from minor contributors.
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