What absorbs at 3413 cm⁻¹ in an FTIR spectrum?
A band near 3413 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
Réponse rapide
A band near 3413 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.
Attributions possibles de groupes fonctionnels
| Groupe fonctionnel | Faits à l＇appui | Sources citées | Confiance maximale |
|---|---|---|---|
| Hydroxyl (O-H) | 17 | 16 | 1,0 |
| Alkyl C-H | 3 | 3 | 1,0 |
| Water (H2O) | 3 | 3 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Carbohydrate | 2 | 2 | 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 |
| Metal oxygen | 1 | 0 | 1,0 |
Le classement reflète les preuves bibliographiques accumulées, et non une règle faisant autorité. Confirmez toujours dans le contexte de votre échantillon.
Matériaux possibles
| Matériel | Pics de support | Groupes chevauchants | Sources citées |
|---|---|---|---|
| chitosan | 3413, 1650, 1655 | Alkyl C-H, Hydroxyl (O-H), N h | 2 |
| graphene oxide | 3413, 1150, 3400 | Hydroxyl (O-H), Alkyl C-H | 1 |
| cotton fabric | 3413, 900, 862 | Alkyl C-H, Hydroxyl (O-H) | 1 |
| gold nanoparticles | 3413, 1638, 3252 | Alkyl C-H, Hydroxyl (O-H) | 1 |
| AuNPs | 3413, 1646, 1721 | Hydroxyl (O-H), Alkyl C-H | 1 |
| copper oxide nanoparticles | 3413, 624, 1317 | Hydroxyl (O-H), Alkyl C-H | 1 |
Les matériaux sont affichés uniquement lorsque le même ensemble de littérature soutient cette bande et au moins un pic caractéristique supplémentaire.
Logique du spectre
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 3413 cm⁻¹ is usually not enough for material identification by itself.
Utilisation réelle
Ce type de requête est courant dans l＇identification des polymères, le criblage des plastiques inconnus, le dépannage du contrôle qualité, la vérification des matériaux recyclés et l＇examen de l＇attribution des pics appuyée par la littérature.
Erreurs courantes
- Traiter une bande isolée comme preuve d＇un matériau sans vérifier au moins un ou deux pics de support.
- Ignorer le chevauchement : plusieurs groupes fonctionnels peuvent contribuer près du même nombre d＇onde.
- Sauter la validation lorsque des additifs, des mélanges, l＇oxydation ou la contamination peuvent déformer le spectre.
Conseil de vérification
Lorsque l＇ambiguïté persiste, validez l＇hypothèse avec DSC, GC-MS ou TGA, en particulier pour les mélanges, les échantillons dégradés et les polymères chargés.
Bibliographie derrière ces attributions
-
confiance 1,0
“In the FTIR specabsorptionpeakat3413cm-1 trumofunmodifiedbiochar, the -OH was due to stretching of (Tong et al.”
Effect of aluminum modification of rice straw–based biochar on arsenate adsorption DOI: 10.1007/s11368-020-02595-2 -
Hydroxyl (O-H) confiance 1,0
“RESULTS AND DISCUSSION FTIR Spectroscopy The IR spectra of SHCF showed a broad peak at 3413.27cm(cid:1)1 with relative absorbance of 81.9% due to 2922.64cm(cid:1)1 2013 bonded OH groups in cellulose and at with relative absorbance of 81.6%”
Kalia 和 Kumar - 2013 - Surface Modification of Sunn Hemp Fibers Using Acr DOI: 10.1080/03602559.2012.717335 -
Hydroxyl (O-H) confiance 1,0
“1(A)) containing ARE-siRNA and RIP underpins cm-1.45(cid:2)46 firmed by the O-H stretching at 3413 The as a target nanotechnology-based RNAi delivery plat-”
Hetero-Functionalized Gold Nanoparticles to Silence AU-Rich Element Containing mRNAs in RAGE-Expressing Inflammatory Cells: Preparation, Characterization, and <i>In</i>-<i>Vitro</i> Evaluation DOI: 10.1166/jnn.2018.14648 -
Hydroxyl (O-H) confiance 1,0
“The FTIR spectroscopy analysis of MEOA and HYOOA cm-1, Figure 10b confirms the disappearance of the oxirane indicate the presence of a peak at 3003-3008 which ring, which appeared in MEOA at 54.59-57.29 ppm and belongs to the double bond C=”
Salimon 等 - 2013 - Synthesis and optimization ring opening of monoepo DOI: 10.1186/2193-1801-2-429 -
Water (H2O) confiance 1,0
“Additionally, the broad band fixed at 3413 and 3392 is attributed to the stretching and bending vibrations of absorbed water and surface hydroxyls [47].”
Spectroscopic and Antibacterial Properties of CuONPs from Orange, Lemon and Tangerine Peel Extracts: Potential for Combating Bacterial Resistance DOI: 10.3390/molecules26030586 -
Hydroxyl (O-H) confiance 1,0
“LLM confirmed rule peak-group candidate”
Xu 等 - 2005 - Chitosan-starch composite film preparation and ch DOI: 10.1016/j.indcrop.2004.03.002 -
Acetate confiance 1,0
“Aliphatic CH and CH stretching 2 3289 O-H and C-O-H stretching 3413 -OH stretching”
Cuiffo 等 - 2021 - Thermochemical degradation of cotton fabric under DOI: 10.1186/s40691-021-00263-8 -
Hydroxyl (O-H) confiance 1,0
“In the FTIR spectra of Fe 3O 4, the peaks at 3413 and cm-1 cm-1 1634 corresponds to the O-H vibration meanwhile the peak at 604 represented Polymers 2022, 14, x FOR PEER REVIEW”
Magnetic Graphene-Based Nanosheets with Pluronic F127-Chitosan Biopolymers Encapsulated -Mangosteen Drugs for Breast Cancer Cells Therapy DOI: 10.3390/polym14153163
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