What absorbs at 3124 cm⁻¹ in an FTIR spectrum?
A band near 3124 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 5 cited sources
Mabilis na sagot
A band near 3124 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.
Mga posibleng pagtatalaga ng functional-group
| Grupong functional | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| N h | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Fluorine (C-F) | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Mga posibleng materyales
| Materyal | Sumusuportang mga peak | Mga overlapping na grupo | Mga nasiping sanggunian |
|---|---|---|---|
| hematite | 3124, 1030, 469 | Hydroxyl (O-H), Water (H2O) | 1 |
| goethite | 3124, 1470, 696 | Hydroxyl (O-H), N h | 1 |
Ang mga materyales ay ipinapakita lamang kapag ang parehong literatura pool ay sumusuporta sa banda na ito at hindi bababa sa isang karagdagang katangian na tuktok.
Logic ng spectrum
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 3124 cm⁻¹ is usually not enough for material identification by itself.
Paggamit sa totoong mundo
Ang uri ng query na ito ay karaniwan sa pagtukoy ng polymer, screening ng hindi kilalang plastic, pag-troubleshoot ng QC, pag-verify ng recycled na materyal, at pagsusuri ng pagtatalaga ng peak na may suporta ng literatura.
Mga karaniwang pagkakamali
- Pagtrato sa isang nakahiwalay na banda bilang patunay ng isang materyal nang hindi sinusuri ang hindi bababa sa isa o dalawang sumusuportang peak.
- Hindi pinapansin ang overlap: maraming functional group ang maaaring mag-ambag malapit sa parehong wavenumber.
- Pag-laktaw sa pagpapatunay kapag ang mga additives, blends, oxidation, o contamination ay maaaring mag-distort ng spectrum.
Payo sa pagpapatunay
Kapag nananatili ang kalabuan, patunayan ang hypothesis gamit ang DSC, GC-MS, o TGA, lalo na para sa mga blend, degraded na sample, at filled polymers.
Literatura sa likod ng mga pagtatalagang ito
-
Hydroxyl (O-H) kumpiyansa 1.0
“560cm-1[10-11], 3According to Figure 3, there are a Sn-OH vibration peak at NO vibration peaks at 1384cm-1 1637cm-1[12] 3124cm-1, and and a -OH vibration peak of water at which demonstrates that a 3small amount of adsorbed water and NO ions”
Liu 等 - 2012 - Preparation and Properties of Gd and Sb Doped SnO2 DOI: 10.4028/www.scientific.net/AMR.528.50 -
Hydroxyl (O-H) kumpiyansa 1.0
“FTIR spectroscopy Mössbauer spectroscopy d-OH indicated that goethite of type 1 is characterized by the presence of the band between 799 Iron ores 802cm(cid:3)1, 904cm(cid:3)1 c-OH the between 898 and and the bulk hydroxyl stretch between 3”
Spectroscopic characterization of iron ores formed in different geological environments using FTIR, XPS, Mössbauer spectroscopy and thermoanalyses DOI: 10.1016/j.saa.2014.10.090 -
kumpiyansa 1.0
“The FTIR spectra of 5 was charactercm(cid:1)1, N-H cm(cid:1)1, C¼O C-F niosomes(without5-FU)wasshowntoexhibitincreasedCI,showingrapid ized by stretch at 3123.5 bend at 1651.2 8 O.L.”
The effect of noisome preparation methods in encapsulating 5-fluorouracil and real time cell assay against HCT-116 colon cancer cell line DOI: 10.1016/j.heliyon.2022.e12369 -
kumpiyansa 1.0
“Moreover, the FTIR analyses showed an intensity reduction in the functional groups of Thus, optical ellipsometry analysis of non-encapsulated MAPbI samples showed a 3 decrease in the absorbance of the samples from 400 nm to 700 nm, whereas”
Characterization of a New Low Temperature Encapsulation Method with Ethylene-Vinyl Acetate under UV Irradiation for Perovskite Solar Cells DOI: 10.3390/app12105228 -
N h kumpiyansa 0.9
“Free ligand stretching vibrations.”
Czylkowska 等 - 2020 - Synthesis, Spectroscopic, Thermal and Catalytic Pr DOI: 10.3390/ma13143217
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