What absorbs at 3329 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 3329 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 3329 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

• N h 信頼度 1.0

  “cm-1 The vibrational bands at 3329 and 3193 corresponded to the stretching symmetThe vibrational bands at 3329 and 3193 cm-1 corresponded to the stretching symric vibration of NH and the bending symmetric vibration of NH for DES1, indicatin”

  Can 等 - 2023 - Choline Chloride-Based Deep Eutectic Solvent-Treat DOI: 10.3390/f14030569
• Hydroxyl (O-H) 信頼度 1.0

  “Fourier Transform EFB WPG cm-1 Infrared spectrum shows that after the modification, the intensity of -OH peak at 3329 decreased and (FTIR) cm-1 the new peak at 1728 of C=O ester emerged.”

  Jahi 等 - 2020 - Empty Fruit Bunch Cellulose based Sorbent for Oil DOI: 10.17576/jsm-2020-4909-29
• Alkyl C-H 信頼度 1.0

  “These values suggest how much stretching at 3329 C-H alkane stretching at”

  Al-Ghouti 和 Dib - 2020 - Utilization of nano-olive stones in environmental DOI: 10.1007/s40201-019-00438-y
• 信頼度 1.0

  “e PNX) for PN observed at 3329 represents the stretching vibration of the N-H bond, and the peak at about”

  Lu 等 - 2016 - Use of polyurea from urea for coating of urea gran DOI: 10.1186/s40064-016-2120-x
• 信頼度 1.0

  “It can be seen from Figure 5 that the N-H stretching produces symmetrical (3329 cm-1), asymmetrical (3251 and 3153 cm-1) stretching vibration peaks, and the vibration modes”

  Facile Synthesis, Characterization, Anti-Microbial and Anti-Oxidant Properties of Alkylamine Functionalized Dumb-Bell Shaped Copper-Silver Nanostructures DOI: 10.3390/cryst10110966
• Hydroxyl (O-H) 信頼度 1.0

  “As observed in Figure 3A, a broad cm-1 peak at 3329 might correspond to the hydroxyl groups (-OH) in polyphenols in bush tea, such as flavonoids and phenolic acids or -NH stretch of amino groups [9].”

  Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties DOI: 10.3390/fermentation9070648
• Hydroxyl (O-H) 信頼度 1.0

  “FTIR spectra of new cellulose paper show absorbance cm-1 peaks located close to 3329 that represents an O-H functional group, located close to 2922 and cm-1 cm-1 2854 that represent a C-H functional group, and located close to 1050 that rep”

  Fourier Transform Infrared (FTIR) Spectroscopy Analysis of Transformer Paper in Mineral Oil-Paper Composite Insulation under Accelerated Thermal Aging DOI: 10.3390/en11020364
• Hydroxyl (O-H) 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  Pomelo Peel Modified with Citrate as a Sustainable Adsorbent for Removal of Methylene Blue from Aqueous Solution DOI: 10.3390/molecules23061342