What absorbs at 822 cm⁻¹ in an FTIR spectrum?
A band near 822 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
クイックアンサー
A band near 822 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.
可能性のある官能基アサイン
| 官能基 | 裏付け事実 | 引用元 | 最高信頼度 |
|---|---|---|---|
| Aromatic ring | 3 | 3 | 1.0 |
| Alkyl C-H | 2 | 2 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Chlorine | 1 | 1 | 1.0 |
ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。
可能性のある材料
| 素材 | 補助ピーク | 重複グループ | 引用元 |
|---|---|---|---|
| cellulose | 822, 1735, 1650 | Alkyl C-H | 1 |
| activated carbon | 822, 1575, 1210 | Alkyl C-H, Aromatic ring | 1 |
| ZnO | 822, 1400, 3430 | Metal oxygen, Alkyl C-H | 1 |
同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。
スペクトルロジック
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 822 cm⁻¹ is usually not enough for material identification by itself.
実使用例
この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。
よくある間違い
- 少なくとも1~2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
- 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
- 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。
検証アドバイス
曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。
これらのアサインの根拠となる文献
-
信頼度 1.0
“Larvicidal Property of Green Synthesized Silver Nanoparticles against Vector Mosquitoes 5 cm(cid:1)1), production would be an appropriate for extending the biologstretching 1388.16 aliphatic amine group (C-N stretchcm(cid:1)1), ical route f”
Larvicidal property of green synthesized silver nanoparticles against vector mosquitoes (Anopheles stephensi and Aedes aegypti) DOI: 10.1016/j.jksus.2015.10.006 -
Hydroxyl (O-H) 信頼度 1.0
“Zn-O 600 679 680 670 Stretching 822 885 885 884 Weak vibration of ZnO Declaration of competing interest O-H 1008 1008 1008 983 asymmetric stretching”
Role of dysprosium doping concentration on structural deformation of zinc oxide nanoparticles DOI: 10.1016/j.physb.2021.413313 -
Alkyl C-H 信頼度 1.0
“cm-1 cm-1 3620 (OH stretch), 1612 (C = C aromatic), 1238 (stretching CO), and 829 (stretching cm-1 cm-1 cm-1 CC), while the GO spectrum is 3593 (OH stretch), 1722 (C = O stretch), 1283 (CO cm-1 stretch) and 822 (CH stretch).”
Rukman 等 - 2019 - GO-Fe3O4 Nanocomposite from coconut shell Synthes DOI: 10.1088/1755-1315/217/1/012008 -
Aromatic ring 信頼度 1.0
“The strong sharp bands at 760 cm-1, 793 cm-1, and 822 cm-1 can be ascribed cm-1 cm-1, to o-disubstituted benzene ring vibration [38].”
Synthesis, Characterization and Biological Activities of New Schiff Base Compound and Its Lanthanide Complexes DOI: 10.3390/ph15040454 -
Alkyl C-H 信頼度 1.0
“cm-1 is attributed to the C-H stretch vibration, and two The small peak at 822 cm-1 peaks appeared at 618 and 542 band corresponding to the C-H bend, as”
Chemical functional groups of extractives, cellulose and lignin extracted from native Leucaena leucocephala bark DOI: 10.1007/s00226-020-01258-2 -
Metal oxygen 信頼度 1.0
“The WO6 821.6cm-1 W-O the band at”
Phuruangrat 等 - 2014 - Hydrothermal Synthesis, Characterization, and Visi DOI: 10.1155/2014/138561 -
Aromatic ring 信頼度 1.0
“Moreover, the existence of a benzene ring in phenol adsorbed by the adsorbent can be confirmed by the peak at 821.68 cm-1.”
Sureshkumar 等 - 2020 - Continuous Phenol Removal Using a Liquid-Solid Cir DOI: 10.3390/en13153839 -
信頼度 0.9
“Same as above.”
Chu 等 - 2019 - Facile Preparation of g-C3N4-WO3 Composite Gas Sen DOI: 10.1155/2019/6074046
このバンドを持つスペクトルがありますか?
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