What absorbs at 1484 cm⁻¹ in an FTIR spectrum?

Stutt svar

A band near 1484 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

Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.

Möguleg efni

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 1484 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

• Alkene (C=C) öryggi 1,0

  “Band 3 2 cm-1 at 1484 could be ascribed to the C=C bonds.”

  Synthesis, Optical, Chemical and Thermal Characterizations of PMMA-PS/CeO2 Nanoparticles Thin Film DOI: 10.3390/polym13071158
• Ring structure öryggi 1,0

  “[43] 1484 C8-H coupled with a ring vibration of guanine 1484 ν(C=C)-diagnostic for the presence of a carotenoid structure, [44]”

  Ghassemi 等 - 2021 - Diagnosis of normal and malignant human gastric ti DOI: 10.1016/j.molstruc.2020.129493
• Amide öryggi 1,0

  “a cm-1 The bands at 1,700-1,600 are mostly attributed to the 1484 a amide I vibrations (the CO stretches of backbone amides), 14811476 b”

  Takano 等 - 2008 - Herbicide effect on the hydrogen-bonding interacti DOI: 10.1007/s11120-008-9302-5
• Alkyl C-H öryggi 1,0

  “The changes in cm-1 cm-1 changes in the band between 1484 and 1410 could have been due to aliphatic the band between 1484 cm-1 and 1410 cm-1 could have been due to aliphatic C-H deforC-H deformation, C-O stretching, and the O-H deformation”

  Autopsy of Used Reverse Osmosis Membranes from the Largest Seawater Desalination Plant in Oman DOI: 10.3390/membranes12070671
• Ring structure öryggi 1,0

  “adenosine and guanosine internal ring vibration gives rise to a peak at 1484 and at 1337 cm-1”

  FTIR Spectroscopy to Reveal Lipid and Protein Changes Induced on Sperm by Capacitation: Bases for an Improvement of Sample Selection in ART DOI: 10.3390/ijms21228659
• öryggi 1,0

  “Additionally, the peaks at 1484 and 1085 cm characteristic of the Raman spectrum of malachite, is consistent with the + CR M mixture up to 40% of M.”

  Spectroscopic study of mixtures of green copper pigments in fresh and aged model samples. Case studies on masterpieces from the Spanish Golden Age DOI: 10.1016/j.culher.2022.12.004
• öryggi 1,0

  “medium peak at 769 a strong peak at 947 as well as a weak peak at 1484 The cm-1 cm-1 peaks at ~520 and a broad band at 550-280 as well as the infrared absorption at cm-1 1484 were due to the infrared absorption by the Ca-O bond.”

  Zaid 等 - 2017 - Effect of Sintering on Crystallization and Structu DOI: 10.2298/SOS1704409Z
• öryggi 0,9

  “Sharp PS-derived peak at 1484.”

  Nanomechanical IR spectroscopy for fast analysis of liquid-dispersed engineered nanomaterials DOI: 10.1016/j.snb.2016.04.002