What absorbs at 483 cm⁻¹ in an FTIR spectrum?
A band near 483 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 7 cited sources
Jawapan pantas
A band near 483 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.
Penetapan kumpulan berfungsi yang mungkin
| Kumpulan berfungsi | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Metal hydroxyl | 2 | 2 | 1.0 |
| Metal oxygen | 2 | 2 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 0 | 1.0 |
Pemeringkatan mencerminkan bukti literatur terkumpul, bukan satu peraturan berwibawa. Sentiasa sahkan terhadap konteks sampel anda.
Bahan yang mungkin
| Bahan | Puncak sokongan | Kumpulan bertindih | Sumber dipetik |
|---|---|---|---|
| TiO2 | 483, 1700, 1093 | Metal oxygen, Hydroxyl (O-H) | 1 |
| Fe3O4 | 483, 2358, 1673 | Hydroxyl (O-H), Metal oxygen, Silicon-oxygen (Si-O) | 1 |
Bahan hanya dipaparkan apabila kumpulan literatur yang sama menyokong jalur ini dan sekurang-kurangnya satu puncak ciri tambahan.
Logik spektrum
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 483 cm⁻¹ is usually not enough for material identification by itself.
Penggunaan dunia sebenar
Jenis pertanyaan ini biasa dalam pengenalpastian polimer, saringan plastik tidak diketahui, penyelesaian masalah QC, pengesahan bahan kitar semula, dan semakan tugasan puncak yang disokong oleh literatur.
Kesilapan biasa
- Menganggap satu jalur terpencil sebagai bukti bahan tanpa memeriksa sekurang-kurangnya satu atau dua puncak sokongan.
- Mengabaikan pertindihan: pelbagai kumpulan berfungsi boleh menyumbang berhampiran nombor gelombang yang sama.
- Melangkau pengesahan apabila bahan tambahan, campuran, pengoksidaan, atau pencemaran boleh memesongkan spektrum.
Nasihat pengesahan
Apabila kekaburan masih ada, sahkan hipotesis dengan DSC, GC-MS, atau TGA, terutamanya untuk campuran, sampel terdegradasi, dan polimer terisi.
Literatur di sebalik penetapan ini
-
Metal oxygen keyakinan 1.0
“The sharp peaks observed 3 cm-1 at 483 further characterize the presence of Mn-O stretching vibration bond in Mn 3O 4/MnSnO nanocomposite by 3 cm-1 employing Raman spectra.”
Synthesis and characterization of Mn3O4/MnSnO3 nanocomposites for supercapacitor applications DOI: 10.1007/s12588-019-09250-7 -
Metal hydroxyl keyakinan 1.0
“attributed to stretching of O-H groups, which indicates the adsorbed For TiO nanoparticles, TiO 2 2 cm-1 network bonds and deformation vibrations of stretching mode of Ti-OH peaks were observed at 483 and”
Photocatalytic activity of ZrO2/TiO2/Fe3O4 ternary nanocomposite for the degradation of naproxen: characterization and optimization using response surface methodology DOI: 10.1038/s41598-022-14676-y -
Carbohydrate keyakinan 1.0
“The bands at 483, 1082, cm-1 matrices consists of the means of the spectra that correspond to and 1322 are assigned to carbohydrates (Schulte et al., 2008;”
Combining Chemical Information From Grass Pollen in Multimodal Characterization DOI: 10.3389/fpls.2019.01788 -
keyakinan 1.0
“In the spectrum obtained for pristine alumina, the following bands characteristic for this compound appear: the O-H stretching band in the wavelength range of 3600-3200 cm-1, the O-H bending oscillation band originating from the water physi”
Klapiszewska 等 - 2019 - Production of cement composites using alumina-lign DOI: 10.5277/ppmp19058 -
Silicon (Si) keyakinan 1.0
“cm-1 cm-1 υ2-type Two peaks at about 445 and 483 associated with internal deformaTwo peaks at about 445 cm-1 and 483 cm-1 associated with υ2-type internal υ4-type tions (O non-Si-O vibrations) and asymmetric bending (ASB) vibrations deforma”
Madadi 和 Wei - 2022 - Characterization of Calcium Silicate Hydrate Gels DOI: 10.3390/gels8020075 -
keyakinan 1.0
“bandshiftsfrom514-526cm-1 correspondingtotheSi-O-Alvibration,to483-499cm-1 theδ (Si-O-Fe) 3 Simultaneously, the δ3 band shifts from 514-526 cm-1 corresponding to the Si-O-Al vibration, to 483-”
Zviagina 等 - 2020 - Distinguishing Features and Identification Criteri DOI: 10.3390/min10020153 -
Silicon-oxygen (Si-O) keyakinan 0.9
“Peak at 483 cm-1 assigned to SiO group in Ca2Si3O8.”
Synthesis and spectroscopic investigations of trivalent europium-doped Z2Si3O8 (Z = Mg, Ca and Sr) nanophosphors for display applications DOI: 10.1007/s12598-020-01391-8
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