What absorbs at 2007 cm⁻¹ in an FTIR spectrum?
A band near 2007 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 7 cited sources
快速回答
A band near 2007 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 |
|---|---|---|---|
| Amide | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 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 |
| Nitrate | 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
| 材料 | 支持峰 | 重疊基團 | 引用來源 |
|---|---|---|---|
| AgNPs | 2007, 1232, 1048 | N h, Hydroxyl (O-H), Amide | 1 |
| AuNPs | 2007, 1646, 1721 | Hydroxyl (O-H), Amide | 1 |
| HDPE | 2007, 1369, 1216 | Hydroxyl (O-H) | 1 |
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 2007 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
-
Nitrate 信心 1.0
“The main absorption peaks cm-1 of CaSO around 660 and 600 provided no 4 interferences to nitrate bands (Verma and Deb 2007).”
Choe 等 - 2010 - An Alternate Method for Fourier Transform Infrared DOI: 10.1007/s11270-009-0091-z -
Amide 信心 1.0
“protein content predicted based on peak height at 1652 ture is less straightforward than for amide I vibration (Barth 2007), the amide I region was deconvoluted (Byler and Sui Protein content predicted from FTIR was highly correlated (R2=0.”
Qualitative and Quantitative Analysis of Sorghum Grain Composition Including Protein and Tannins Using ATR-FTIR Spectroscopy DOI: 10.1007/s12161-020-01874-5 -
Acetate 信心 1.0
“r2, (RPD) for cross-validation and root mean square error of predicAll the spectrum analyses are characterised by bands between tion (RMSEP) and RPD for test-set validation (Workman & Weyer, cm(cid:1)1, 1500 and 900 which correspond to C-C”
FTIR⠍ATR spectroscopy applied to quality control of grape-derived spirits DOI: 10.1016/j.foodchem.2016.02.128 -
Amide 信心 1.0
“3 (2020) 1175-1185 3.2 SAMs process on each silicon-based bonds, while amide II signals are between 1550 - cm-1 1600 derived from in-plane N-H bending and material substrates et al., from C-N stretching vibration (Kong 2007), Structural pro”
Gomez-Montano 等 - 2020 - Detection of Salmonella enterica on silicon substr DOI: 10.24275/rmiq/Bio993 -
信心 1.0
“(N-H).24 vibrations of amino 2007, 79, 3810.”
Nagajyothi 等 - 2012 - Green Synthesis of Silver and Gold Nanoparticles U DOI: 10.5012/bkcs.2012.33.8.2609 -
Hydroxyl (O-H) 信心 1.0
“Also, another new band between 3100 This work was supported by the 2007 cm-1 is attributed to a hydroxyl bond and/or hydroand 3500 Yeungnam University Research Grant.”
Park 等 - 2013 - Analysis of Degradation Behaviors of Geomembrane b DOI: 10.7317/pk.2013.37.1.5 -
Amide 信心 1.0
“Smidt and stretch: amide I band) cmMeissl, 2007;”
Comprehensive characterization of industrial wastewaters using EEM fluorescence, FT-IR and 1H NMR techniques DOI: 10.1016/j.scitotenv.2021.150417
有包含此波峰的圖譜嗎？
上傳您的FTIR圖譜，幾秒內即可獲得完整的解讀報告——包含帶有文獻引用的峰位指派、圖譜庫比對以及信心等級評估的證據鏈。