What absorbs at 1492 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 1492 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

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可能性のある材料

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 1492 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

• Alkyl C-H 信頼度 1.0

  “For PS1, there was cm-1 a peak in the area of 1492.25 to indicate the absorption of the (C-H) group as alkyl.”

  Hidayani 等 - 2022 - Acoustic and Mechanical Properties of Polystyrene DOI: 10.37358/Mat.Plast.1964
• Alkyl C-H 信頼度 1.0

  “For PS, there was a peak at 1492.25 cm-1 indicating the absorption of the indentation of the (C-H) group as alkyl.”

  Preparation and Characterization of Sound-Absorbent Based on Polystyrene Reinforced Primary Sludge and Fly Ash from Pulp Mill DOI: 10.14716/ijtech.v14i3.5131
• Alkyl C-H 信頼度 1.0

  “1506 In-plane CH bending vibration from the phenyl rings 1492 Deformation C-H Table 2.”

  Salivary Detection of Zika Virus Infection Using ATR-FTIR Spectroscopy Coupled with Machine Learning Algorithms and Univariate Analysis: A Proof-of-Concept Animal Study DOI: 10.3390/diagnostics13081443
• Nitrate 信頼度 1.0

  “cm-1 and the combined peaks at 1257 and 1302 can be assigned to monodentate nitrate species adsorbed on the surface of the support.37 TiO Similarly, the two peaks present at 1492 and 2 cm-1 1584 may be assigned to monodentate and bidentate”

  Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122
• 信頼度 1.0

  “The intensity may be assigned to OH groups linearly coordinated to cm-1, environments.57,58 of bands at 1492 and 1410 which may be attributed to cations (Zr-Type I) in different A feature at ceriacm-1, residual polydentate carbonates chemis”

  Collins 等 - 2007 - Hydrogen interaction with a ceria-zirconia support DOI: 10.1021/jp071968l
• Amide 信頼度 1.0

  “ranges 1510-1700 and 3500-3600 simultaneous with the increase of the absorbance of IR band at cm-1 C=C 1492 attributed to the stretching vibrational mode in compounds of the type aniline [20,22] indicate a decrease in the amide group weight”

  Photoluminescence as a Valuable Tool in the Optical Characterization of Acetaminophen and the Monitoring of Its Photodegradation Reactions DOI: 10.3390/molecules25194571
• Aromatic ring 信頼度 1.0

  “The absorption peaks at 1492 and 1451 represent the stretching vibration bands of aromatic ring C=C contribution from polystyrene [30].”

  Fabrication of Europium-Doped Barium Titanate/Polystyrene Polymer Nanocomposites Using Ultrasonication-Assisted Method: Structural and Optical Properties DOI: 10.3390/polym14214664
• C c single bond 信頼度 1.0

  “Moreover, bands at 1492 and 1451 cm-1were of the C-C stretching vibrations of the benzyl ring and the stretching vibrations of the C-H bond of characteristic of the C-C stretching vibrations of the benzyl ring and the stretching vibrations”

  Ramirez-Gomez 等 - 2019 - Synthesis and Characterization of Clay Polymer Nan DOI: 10.3390/polym11040721