What absorbs at 571 cm⁻¹ in an FTIR spectrum?
A band near 571 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 8 cited sources
Snel antwoord
A band near 571 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
| Functionele groep | Ondersteunende feiten | Geciteerde bronnen | Hoogste vertrouwen |
|---|---|---|---|
| Phosphorus | 2 | 2 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Methyl | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Silanol (Si-OH) | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
| Ring structure | 1 | 0 | 1,0 |
Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.
Mogelijke materialen
| Materiaal | Ondersteunende pieken | Overlappende groepen | Geciteerde bronnen |
|---|---|---|---|
| apatite | 571, 3053, 1640 | Phosphate (PO4), Phosphorus, Alkyl C-H | 1 |
| hydroxyapatite | 571, 1620, 1639 | Phosphate (PO4), Alkyl C-H, Phosphorus | 1 |
| chitosan | 571, 1650, 1655 | Alkyl C-H | 1 |
| Fe3O4 | 571, 2358, 1673 | Alkyl C-H | 1 |
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 571 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
-
Aromatic ring vertrouwen 1,0
“in SSSAJ: Volume 75: Number 2 • March-April 2011 571 cm-1 1238 could be due to aromatic-CH in plane deformation Particulate OM makes up 5 to 23% of the SOC, with the and has high partial least squares regression loadings for TOC smaller pro”
Calderon 等 - 2011 - Chemical Differences in Soil Organic Matter Fracti DOI: 10.2136/sssaj2009.0375 -
Silanol (Si-OH) vertrouwen 1,0
“Series: Materials Science and Engineering (2017) 012047 doi:10.1088/1757-899X/202/1/012047 cm-1 cm-1 Si-Fe-O at 570.93 [6, 17], Si-OH stretching at 779.24 [11], and Si-O-Si stretching cm-1 asymmetric at 1049.28 [6, 15] clearly show the pres”
Deswardani 等 - 2017 - Study of Structural and Magnetic Properties of Sil DOI: 10.1088/1757-899X/202/1/012047 -
vertrouwen 1,0
“Further, FT-IR spectroscopy reveals for Fe 3O a band at 571 which shows 4 4 theFe-Ostretchingmodeoftetrahedralandoctahedralsites.Formationofγ-Fe 2O 3uponannealingwasagainconfirmedfromthe cm-1 cm-1 cm-1.”
Yadav 等 - 2020 - Facile Synthesis of Substantially Magnetic Hollow DOI: 10.1007/s10948-020-05481-7 -
Alkyl C-H vertrouwen 1,0
“LLM confirmed rule peak-group candidate”
Development of New Amphiphilic Catalytic Steam Additives for Hydrothermal Enhanced Oil Recovery Techniques DOI: 10.3390/catal12080921 -
Phosphate (PO4) vertrouwen 1,0
“One strong and relatively broad band at 1062.78cm-1, two relatively strong and sharp bands at 570.95cm-1 603.71cm-1, and and another band at ABC 956.69cm-1 have appeared due to the presence of the 43-) phosphate (PO group of HAp.”
Malla 等 - 2020 - Extraction and Characterization of Novel Natural H DOI: 10.1155/2020/1690178 -
Phosphate (PO4) vertrouwen 1,0
“The peaks cm-1 at 571, 604, 983, 1035, and 1098 are associated with the vibrational modes of the phosphate groups.”
Composition and content analysis of fluoride in inorganic salts of the integument of Antarctic krill (Euphausia superba) DOI: 10.1038/s41598-019-44337-6 -
vertrouwen 0,9
“Explicit assignment in text.”
Spectral characterization of hydroxyapatite extracted from Black Sumatra and Fighting cock bone samples: A comparative analysis DOI: 10.1016/j.sjbs.2020.11.020 -
vertrouwen 0,8
“Text: 'KBR absorption peak used as pellets'.”
Zam 等 - 2021 - Identification of chitosan beads from coconut crab DOI: 10.1088/1742-6596/1832/1/012014
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