What absorbs at 507 cm⁻¹ in an FTIR spectrum?

Snel antwoord

A band near 507 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.

Mogelijke functionele-groeptoewijzingen

Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.

Mogelijke materialen

Materialen worden alleen getoond wanneer dezelfde literatuurpool deze band en ten minste één extra karakteristieke piek ondersteunt.

Spectrumlogica

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 507 cm⁻¹ is usually not enough for material identification by itself.

Gebruik in de praktijk

Dit type query komt vaak voor bij polymeeridentificatie, screening van onbekende kunststoffen, probleemoplossing bij QC, verificatie van gerecycled materiaal en literatuurondersteunde beoordeling van piektoewijzing.

Veelgemaakte fouten

• Het behandelen van een enkele geïsoleerde band als bewijs van een materiaal zonder ten minste een of twee ondersteunende pieken te controleren.
• Overlap negeren: meerdere functionele groepen kunnen bijdragen rond hetzelfde golfgetal.
• Validatie overslaan wanneer additieven, mengsels, oxidatie of verontreiniging het spectrum kunnen verstoren.

Advies voor verificatie

Wanneer dubbelzinnigheid blijft bestaan, valideer de hypothese met DSC, GC-MS of TGA, vooral voor mengsels, gedegradeerde monsters en gevulde polymeren.

Literatuur achter deze toewijzingen

• vertrouwen 1,0

  “But the sample annealed at 800 has weak peak emerged at 507 which is related to nitrogen related local vibration as reported in the reference [26].”

  Enhancement of Al-N co-dopant solubility in ZnO by high temperature thermal annealing DOI: 10.1016/j.ceramint.2018.10.005
• vertrouwen 1,0

  “A around 507 cm-1 is clearly observed in Figure 2 and can be attributed to Au and Bu vibracm-1”

  Surface Morphology and Optical Properties of Hafnium Oxide Thin Films Produced by Magnetron Sputtering DOI: 10.3390/ma16155331
• C c single bond vertrouwen 1,0

  “506 In situ FTIR spectroscopy has revealed that the three 507 472 to a C-C stretching of benzenoid rings.”

  Benyoucef 等 - 2005 - Synthesis and in situ MRS characterization of cond DOI: 10.1016/j.eurpolymj.2004.10.047
• Silicon hydride vertrouwen 1,0

  “cm(cid:0) C-- 1 C stretching peak at 1640 attenuated or disappeared, whereas On the FTIR spectrum for the activated CoCr surface, the disappearance (CoCr-OH-Si45-GO12h, emerged in all incubated multilayer systems of chromium oxide (III) rel”

  Covalent immobilization of graphene oxide on biomedical grade CoCr alloy by an improved multilayer system assembly via Silane/GO bonding DOI: 10.1016/j.matchemphys.2022.126296
• Metal oxygen vertrouwen 1,0

  “Pressure (MPa) 0.1 122.38 305.34 399.23 517.59 606.87 (cm-1) 432.33 433.02 433.20 433.50 433.50 434.83 M-O vibrational peak (cm-1) AlIV-O-Si 507.27 507.43 507.80 508.46 508.13 509.46 vibrational peak (cm-1)”

  The Behavior of Water in Orthoclase Crystal and Its Implications for Feldspar Alteration DOI: 10.3390/cryst12081042
• Metal oxygen vertrouwen 0,9

  “Fe-O stretching and bending”

  Jalandhara 等 - 2016 - Effect of Sintering Temperature on the Optical Pro DOI: 10.1063/1.4946488
• vertrouwen 0,8

  “Explicit assignment in text.”

  Phytochemical screening, polyphenols, flavonoids and tannin content, antioxidant activities and FTIR characterization of Marrubium vulgare L. from 2 different localities of Northeast of Morocco DOI: 10.1016/j.heliyon.2020.e05609
• vertrouwen 0,6

  “Text: 'at 1004, 825, and 507'”

  Characterisation of the Bioactivity and the Solubility of a New Root Canal Sealer DOI: 10.1016/j.identj.2023.04.003