What absorbs at 3008 cm⁻¹ in an FTIR spectrum?
A band near 3008 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
快速回答
A band near 3008 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
可能的官能基指派
| 官能基 | 支持事實 | 引用來源 | 最高信心 |
|---|---|---|---|
| Alkyl C-H | 19 | 18 | 1.0 |
| Alkene (C=C) | 14 | 13 | 1.0 |
| Fatty acid | 4 | 4 | 1.0 |
| Hydrogen bond | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Lipid | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。
可能的材料
僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。
光譜邏輯
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 3008 cm⁻¹ is usually not enough for material identification by itself.
實際使用
此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。
常見錯誤
- 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
- 忽略重疊：多個官能團可能在相同波數附近貢獻。
- 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。
驗證建議
當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。
這些指派背後的文獻
-
Alkene (C=C) 信心 1.0
“The vibration 3008 is assigned to =C-H”
Fourier transform infrared microspectroscopy detects biochemical changes during C. elegans lifespan DOI: 10.1016/j.vibspec.2019.04.005 -
Alkyl C-H 信心 1.0
“The band between (AAPF 2925.08 AAPP: cm-1) 3007.99 absorption was characterized as the C H stretch-”
Characterization of Auricularia auricula polysaccharides and its antioxidant properties in fresh and pickled product DOI: 10.1016/j.ijbiomac.2015.08.020 -
Alkyl C-H 信心 1.0
“The band at is due to the bending vibration of the C-H bonds 3008cm-1”
Naik 等 - 2019 - Optical and Electrical Properties of TCNQ Doped PM DOI: 10.1063/1.5100466 -
Fatty acid 信心 1.0
“In addition, the hydrocarbon chain in the synthesized compound which was formed from unsaturated fatty acid exhibited absorption peaks at ν of 3008.25”
Rahayu 等 - 2021 - Synthesis of oleic-imidazoline and investigation o DOI: 10.17675/2305-6894-2021-10-3-25 -
Alkene (C=C) 信心 1.0
“The 3008 peak is associated with cis-olefinic AV Oil PV b* L* a* BI cm(cid:0)”
Impact of microwave roasting on physicochemical properties, maillard reaction products, antioxidant activity and oxidative stability of nigella seed (Nigella sativa L.) oil DOI: 10.1016/j.foodchem.2021.130777 -
Hydrogen bond 信心 1.0
“The peaks observed at 3008, 2929 and 2854 represents the region of hydrogen bond stretching of the functional groups, peaks detected at cm-1 1745 and 1651 are attributed to the region of double bonds stretching of functional”
Impact of infrared and dry air roasting on the oxidative stability, fatty acid composition, Maillard reaction products and other chemical properties of black cumin (Nigella sativa L.) seed oil DOI: 10.1016/j.foodchem.2019.05.140 -
Hydroxyl (O-H) 信心 1.0
“cm-1 cm-1 cm-1) of peaks at 3008 and ~ 1740 in sub-fossil spectra represents phenol C-O/C-H bonds (1,150 became stronger.”
Influence of common palynological extraction treatments on ultraviolet absorbing compounds (UACs) in sub-fossil pollen and spores observed in FTIR spectra DOI: 10.3389/fevo.2023.1096099 -
Alkene (C=C) 信心 1.0
“There is a weak peak at 3008 time point and different temperature groups after death, we selected the caused by asymmetric cm(cid:0) cm(cid:0) 1 1 (=C-H).”
Adipose tissue estimates the postmortem interval based on ATR-FTIR spectroscopy DOI: 10.1016/j.microc.2021.105977
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