What absorbs at 539 cm⁻¹ in an FTIR spectrum?
A band near 539 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 6 cited sources
Kiire vastus
A band near 539 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.
Võimalikud funktsionaalrühmade määramised
| Funktsionaalrühm | Toetavad faktid | Tsiteeritud allikad | Kõrgeim usaldusväärsus |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
Spektri loogika
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 539 cm⁻¹ is usually not enough for material identification by itself.
Reaalse maailma kasutus
Seda tüüpi päring on tavaline polümeeri tuvastamisel, tundmatu plasti sõeluuringul, kvaliteedikontrolli probleemide lahendamisel, ringlussevõetud materjali kontrollimisel ja kirjandusel põhineval piirkinnituste ülevaatel.
Levinud vead
- Ühe isoleeritud riba käsitlemine materjali tõendina ilma vähemalt ühte või kahte toetavat piiki kontrollimata.
- Ülekattumise ignoreerimine: mitu funktsionaalrühma võivad anda panuse sama lainearvu lähedal.
- Valideerimise vahelejätmine, kui lisandid, segud, oksüdatsioon või saastumine võivad spektrit moonutada.
Kontrollimise nõuanne
Kui ebakindlus püsib, kinnitage hüpotees DSC, GC-MS või TGA abil, eriti segude, lagunenud proovide ja täidetud polümeeride puhul.
Nende määramiste taga olev kirjandus
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usaldusväärsus 1,0
“Cresol fast violet is cm-1 bands at 539 and 473 are related to Fe-O stretching widely used in different industry and hazardous to aquatic and bending vibration mode of α-Fe 2O respectively.”
Photo-catalytic activity of highly efficient binary Mn–Fe nano composite oxides for degradation of cresol fast violet: phase formation and band gap study DOI: 10.1007/s10854-017-7206-x -
Carboxyl (COOH) usaldusväärsus 1,0
“The characteristic tannin absorption for zinc carboxylates, given by the asymmetric 1710cm-1 C(cid:2)O is masked by the carboxylic stretching around stretch vibration band of the carboxylate group, is 1,539cm-1.”
Cortea 等 - 2020 - Application of Spectroscopic and Hyperspectral Ima DOI: 10.3389/fmats.2020.601339 -
Metal oxygen usaldusväärsus 1,0
“The FTIR cm-1 cm-1 spectra of HNTs showed the characteristic bands at 1649 (Si-O stretching, 539 (Al-O-Si vibration), cm-1”
Investigation of halloysite nanotubes and Schiff base combination with deposited copper iodide nanoparticles as a novel heterogeneous catalytic system DOI: 10.1038/s41598-021-02991-9 -
usaldusväärsus 1,0
“The band cm-1 cm-1 at 912 represents Al-Al-OH bonds [2], and the band at 539 represents the Al-O-Si bending”
Characterization and Hemostatic Potential of Two Kaolins from Southern China DOI: 10.3390/molecules24173160 -
usaldusväärsus 1,0
“2c and obtained peaks are at 539, 1402, 3370 and 3622 3 cm-1 The main characteristic absorption peak is at 539 which is corresponding to Mn-O or Cu-O stretching modes38 cm-1 stretching39.”
Fabrication of selective and sensitive chemical sensor probe based on ternary nano-formulated CuO/MnO2/Gd2O3 spikes by hydrothermal approach DOI: 10.1038/s41598-020-76662-6 -
Carboxyl (COOH) usaldusväärsus 0,9
“Same sentence as above”
Marudhu 等 - 2022 - Influence of L-alanine doping on zinc (IRIS) thiou DOI: 10.21203/rs.3.rs-1480676/v1
Kas teil on selle ribaga spekter?
Laadige üles oma FTIR spekter ja saage sekunditega täielik tõlgendusaruanne — piikide määramised kirjandusviidetega, raamatukogu vasted ja usaldusväärsusega hinnatud tõendite ahel.