What absorbs at 3160 cm⁻¹ in an FTIR spectrum?
A band near 3160 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
Kiire vastus
A band near 3160 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.
Võimalikud funktsionaalrühmade määramised
| Funktsionaalrühm | Toetavad faktid | Tsiteeritud allikad | Kõrgeim usaldusväärsus |
|---|---|---|---|
| Hydroxyl (O-H) | 3 | 3 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
Võimalikud materjalid
| Materjal | Toetavad piigid | Kattuvad rühmad | Tsiteeritud allikad |
|---|---|---|---|
| starch | 3160, 1650, 1540 | Hydroxyl (O-H) | 1 |
| ZIF-8 | 3160, 1747, 1145 | N h, Secondary amine | 1 |
| polymer | 3160, 1718, 1722 | Hydroxyl (O-H) | 1 |
Materjale kuvatakse ainult siis, kui sama kirjanduse kogum toetab seda riba ja vähemalt ühte täiendavat iseloomulikku piiki.
Spektri loogika
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 3160 cm⁻¹ is usually not enough for material identification by itself.
Reaalse maailma kasutus
Seda tüüpi päring on tavaline polümeeri tuvastamisel, tundmatu plasti sõeluuringul, kvaliteedikontrolli probleemide lahendamisel, ringlussevõetud materjali kontrollimisel ja kirjandusel põhineval piirkinnituste ülevaatel.
Levinud vead
- Ühe isoleeritud riba käsitlemine materjali tõendina ilma vähemalt ühte või kahte toetavat piiki kontrollimata.
- Ülekattumise ignoreerimine: mitu funktsionaalrühma võivad anda panuse sama lainearvu lähedal.
- Valideerimise vahelejätmine, kui lisandid, segud, oksüdatsioon või saastumine võivad spektrit moonutada.
Kontrollimise nõuanne
Kui ebakindlus püsib, kinnitage hüpotees DSC, GC-MS või TGA abil, eriti segude, lagunenud proovide ja täidetud polümeeride puhul.
Nende määramiste taga olev kirjandus
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Hydroxyl (O-H) usaldusväärsus 1,0
“The peaks at 3463 cm-1 o-phenylenediamine sis of CQDs prepared from showed the and 3160 belong to O-H stretching vibrations whereas a sp2 cm-1 presence of domains predominantly in the carbon core peak at 1612 stems from C=C stretching vibra”
Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine DOI: 10.3762/bjnano.14.17 -
usaldusväärsus 1,0
“As seen in cm-1, high frequency region, where only a band at around 3160 attributed to N-H stretch, 4a, sample jn-01 shows the vibrational band characteristics of ZIF-8 (ZIF-L) that have been is clearly present for ZIF-L (see Figure 5 and F”
XRD and Spectroscopic Investigations of ZIF—Microchannel Glass Plates Composites DOI: 10.3390/ma16062410 -
N h usaldusväärsus 1,0
“The IR spectrum of celecoxib (Figure 2) shows medium cm-1, absorption bands at 3160 and 3260 which were assigned to the drug -NH symmetric and asymmetric intensity and a shift to higher wave numbers.”
Pandya 等 - 2009 - Formulation, Characterization, and Optimization of DOI: 10.14227/DT160409P22 -
Hydroxyl (O-H) usaldusväärsus 1,0
“Wide double-peak line in the band cm-1 3160) corresponds to fluctuations of hydroxyl Electrical Conductivity of the Polymer Composites with group.”
Influence of Ultraviolet/Ozonolysis Treatment of Nanocarbon Filler on the Electrical Resistivity of Epoxy Composites DOI: 10.1186/s11671-016-1577-4 -
Hydroxyl (O-H) usaldusväärsus 1,0
“der at 3220 with its absorption maximum at 3160 The O-D band covering the”
Intermolecular Interactions and Spectroscopic Signatures of the Hydrogen-Bonded System—n-Octanol in Experimental and Theoretical Studies DOI: 10.3390/molecules27041225 -
Water (H2O) usaldusväärsus 1,0
“Hydrogen-bonded water to the gluten network the result of cm-1, 455 hydration by water also form peaks around 3160 contributing to the wide band seen in all 456 samples.”
Turksoy 等 - 2020 - Effect of aging at different temperatures on LAOS DOI: 10.1016/j.foodhyd.2018.12.055
Kas teil on selle ribaga spekter?
Laadige üles oma FTIR spekter ja saage sekunditega täielik tõlgendusaruanne — piikide määramised kirjandusviidetega, raamatukogu vasted ja usaldusväärsusega hinnatud tõendite ahel.