What absorbs at 3134 cm⁻¹ in an FTIR spectrum?
A band near 3134 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 4 cited sources
Stutt svar
A band near 3134 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.
Mögulegar úthlutun virkra hópa
| Virkur hópur | Stuðningsstaðreyndir | Tilvitnuð heimildir | Mesta öryggi |
|---|---|---|---|
| N h | 3 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Oxygen heterocycle | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 0,8 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
Möguleg efni
| Efni | Stuðningstindar | Skarast hópar | Tilvitnuð heimildir |
|---|---|---|---|
| cellulose | 3134, 1735, 1650 | Alkyl C-H | 1 |
| hemicellulose | 3134, 1730, 897 | Alkyl C-H | 1 |
| gelatin | 3134, 1652, 3300 | Alkyl C-H, N h | 1 |
| lignin | 3134, 1035, 1510 | Alkyl C-H | 1 |
| biomass | 3134, 1082, 1282 | Alkyl C-H | 1 |
Efni birtast aðeins þegar sama bókmenntasafn styður þessa band og að minnsta kosti einn viðbótar einkennandi hámark.
Rófrök
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 3134 cm⁻¹ is usually not enough for material identification by itself.
Raunveruleg notkun
Þessi tegund fyrirspurna er algeng við auðkenningu fjölliða, skimun óþekktra plasttegunda, bilanaleit í gæðaeftirliti, staðfestingu endurunnins efnis og bókmenntabakkaða endurskoðun á hápunktum.
Algeng mistök
- Meðhöndla eina einangraða öldulengd sem sönnun á efni án þess að athuga að minnsta kosti einn eða tvo stuðningstoppa.
- Hunsa skörun: mörg virkir hópar geta lagt sitt af mörkum nálægt sömu bylgjutölunni.
- Að sleppa staðfestingu þegar aukefni, blöndur, oxun eða mengun geta brenglað litrófið.
Staðfestingarráðgjöf
Þegar tvíræðni er eftir, staðfestu tilgátuna með DSC, GC-MS eða TGA, sérstaklega fyrir blöndur, niðurbrotin sýni og fylltar fjölliður.
Ritlist á bak við þessar úthlutanir
-
öryggi 1,0
“In the case of 5-FU, the N-H stretching vibration appeared at cm-1, cm-1 3134 whereas the peaks at 3068, 2932, 2887, and 2826 are attributed to both aromatic and aliphatic C-H stretching vibrations.”
Blend Hydrogel Microspheres of Carboxymethyl Chitosan and Gelatin for the Controlled Release of 5-Fluorouracil DOI: 10.3390/pharmaceutics9020013 -
N h öryggi 1,0
“Similarly, POPD/PLUprotonsofPOPD(takenas1/3)andPLU(takenas1/4)wereused cm(cid:3)1 20/80 showed the NH stretching vibration peak at 3134 for calculating their molar ratios in the copolymer.”
Microwave-assisted facile synthesis of poly(luminol-co-phenylenediamine) copolymers and their potential application in biomedical imaging DOI: 10.1039/c8ra08373h -
Oxygen heterocycle öryggi 1,0
“3364 O-H stretching 1661 Carbonyl stretching HMF C=C 1561 stretching (furan ring) 3134”
Zhuang 等 - 2020 - Observation of Potential Contaminants in Processed DOI: 10.3390/app10124345 -
Aromatic ring öryggi 0,8
“Weak peaks at 2921, 2977, 3106, 3134 assignable to CH and aromatic.”
Kurtaran 等 - 2007 - Synthesis, characterization, crystal structure and DOI: 10.1080/00958970701340511
Ertu með róf með þessu bandi?
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