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

快速回答

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.

可能的官能基指派

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 3329 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

• N h 信心 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) 信心 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 信心 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
• 信心 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
• 信心 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) 信心 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) 信心 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) 信心 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