What absorbs at 1810 cm⁻¹ in an FTIR spectrum?
A band near 1810 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 6 cited sources
Hurtigt svar
A band near 1810 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.
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Carbonyl (C=O) | 4 | 3 | 1,0 |
| N-O bond | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Anhydride | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Amide | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
Rangering afspejler akkumulerede litteraturbeviser, ikke en enkelt autoritativ regel. Bekræft altid mod din prøvekontekst.
Mulige materialer
| Materiale | Understøttende toppe | Overlappende grupper | Citerede kilder |
|---|---|---|---|
| microplastics | 1810, 1643, 1614 | Alkyl C-H, Carbonyl (C=O), Aromatic ring | 1 |
Materialer vises kun, når den samme litteraturpulje understøtter dette bånd og mindst en yderligere karakteristisk top.
Spektrumlogik
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 1810 cm⁻¹ is usually not enough for material identification by itself.
Anvendelse i virkeligheden
Denne type forespørgsel er almindelig ved polymeridentifikation, screening af ukendt plast, fejlfinding i kvalitetskontrol, verifikation af genanvendt materiale og litteraturunderstøttet gennemgang af peak-tildeling.
Almindelige fejl
- Behandling af et isoleret bånd som bevis på et materiale uden at kontrollere mindst en eller to understøttende toppe.
- Ignorerer overlap: flere funktionelle grupper kan bidrage nær samme bølgetal.
- Spring validering over, når additiver, blandinger, oxidation eller forurening kan forvrænge spektret.
Verifikationsrådgivning
Når tvetydighed fortsat består, valider hypotesen med DSC, GC-MS eller TGA, især for blandinger, nedbrudte prøver og fyldte polymerer.
Litteratur bag disse tildelinger
-
Carbonyl (C=O) tillid 1,0
“LLM confirmed rule peak-group candidate”
Campanale 等 - 2023 - Fourier Transform Infrared Spectroscopy to Assess DOI: 10.3390/polym15040911 -
Carbonyl (C=O) tillid 1,0
“The spectra at WG, with bands at 2940 cm-1 cm-1 cm-1 spectra at 1800 and 1810 reflected the stretching vibration of the carbonyl group 1800 cm-1 and 1810 cm-1 reflected the stretching vibration of the carbonyl group (C=O), cm-1 (C=O), which”
Bao 等 - 2021 - Green Extraction of Phenolic Compounds from Lotus DOI: 10.3390/foods10020239 -
Anhydride tillid 1,0
“cm-1 peaks at 1850-1800 and at 1790-1740 (asymmetric and symmetric stretching groups).[31] vibrations of the two carbonyl In the PSA samples, the peak area of the cm-1 anhydride peak at 1810 (which did not overlap with other peaks) was used”
Deng 等 - 2019 - Degradation of Polymer Films on Surfaces A Model DOI: 10.1002/macp.201900121. -
Aromatic ring tillid 1,0
“Particularly, the simultaneous cm-1), (3700-3000 aromatic =C-H stretching vibrations (3100 presence of the biomolecules in the multilayer enhanced cm-1), cm-1), alkyl C-H stretching vibrations (2920 aromatic C-H significantly the cell viabi”
Alginate-based hydrogels functionalised at the nanoscale using layer-by-layer assembly for potential cartilage repair DOI: 10.1039/c7bm00525c -
N-O bond tillid 1,0
“1810cm-1 and are assigned to chelating bidentate corresponding to adsorbed NO dimers on Pt is very at nitrates.Thesebandsshifttohigherorlowerfrequenciescompared weakandishardlytodistinguish.Understeady-stateNO-O reac2 175◦C, tothoseformedat”
Catalytic oxidation of NO over TiO2 supported platinum clusters. II: Mechanism study by in situ FTIR spectra DOI: 10.1016/j.cattod.2010.04.038 -
tillid 0,9
“Text: 'the one at 1810 corresponded to the asymmetric stretching vibration'”
Dorner 等 - 2015 - Toward Self-Regenerating Antimicrobial Polymer Sur DOI: 10.1021/acsmacrolett.5b00686.
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