Apakah yang menyerap pada 1628 cm⁻¹ dalam spektrum FTIR?
Jalur berhampiran 1628 cm⁻¹ boleh menunjuk kepada beberapa kumpulan berfungsi. Di bawah adalah tugasan yang paling mungkin, disusun mengikut berapa banyak bukti yang diterbitkan menyokong setiap satu — setiap satu dapat dikesan ke literatur (DOI) dan disahkan silang terhadap 130,000+ spektrum rujukan dan graf pengetahuan kami.
Backed by 8 cited sources
Jawapan pantas
Jalur berhampiran 1628 cm⁻¹ biasanya ditafsirkan dengan memeriksa kumpulan berfungsi yang sering wujud bersama di sana dalam literatur, kemudian mengesahkan sekurang-kurangnya satu atau dua puncak tambahan dalam sampel yang sama. Halaman ini menyusun tugasan tersebut berdasarkan bukti terkumpul dan bukannya peraturan buku teks tetap tunggal.
Penetapan kumpulan berfungsi yang mungkin
| Kumpulan berfungsi | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| Amide | 18 | 18 | 1.0 |
| Hydroxyl (O-H) | 16 | 15 | 1.0 |
| Methacrylate | 12 | 12 | 1.0 |
| Acetate | 12 | 12 | 1.0 |
| Protein beta sheet | 11 | 11 | 1.0 |
| Water (H2O) | 11 | 9 | 1.0 |
| N h | 10 | 10 | 1.0 |
| Carboxyl (COOH) | 9 | 9 | 1.0 |
| Carbonyl (C=O) | 9 | 9 | 1.0 |
| Alkyl C-H | 9 | 9 | 1.0 |
| Ester | 8 | 8 | 1.0 |
| Ketone | 7 | 7 | 1.0 |
| Methoxy (OCH3) | 6 | 6 | 1.0 |
| Alkene (C=C) | 6 | 6 | 1.0 |
| Secondary amine | 5 | 5 | 1.0 |
| C n single bond | 4 | 4 | 1.0 |
| Aromatic ring | 4 | 4 | 1.0 |
| C-O single bond | 4 | 4 | 1.0 |
| C c single bond | 3 | 3 | 1.0 |
| Amino acid | 2 | 2 | 1.0 |
| Hydrogen bond | 2 | 1 | 1.0 |
| Ring structure | 2 | 1 | 1.0 |
| Lipid | 1 | 1 | 1.0 |
| Protein random coil | 1 | 1 | 1.0 |
| Protein alpha helix | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| C=n | 1 | 1 | 1.0 |
| N c o | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Urea | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Oxygen heterocycle | 1 | 1 | 0.8 |
Peringkat mencerminkan bukti literatur terkumpul, bukan peraturan tetap tunggal. Sentiasa sahkan berdasarkan konteks sampel anda.
Bahan yang mungkin
| Bahan | Puncak sokongan | Kumpulan bertindih | Sumber dipetik |
|---|---|---|---|
| copper oxide | 1628, 624, 1686 | Hydroxyl (O-H), Methacrylate, Amide | 1 |
| PMMA | 1628, 1722, 1383 | Methacrylate, Acetate | 1 |
| iron oxide nanoparticles | 1628, 2972, 528 | Hydroxyl (O-H), Methacrylate, Acetate | 1 |
Bahan hanya dipaparkan apabila kumpulan literatur yang sama menyokong jalur ini dan sekurang-kurangnya satu puncak ciri tambahan.
Logik spektrum
Jalur ini menjadi bermakna hanya apabila dibaca dengan puncak-puncak jirannya. Dalam amalan, penganalisis terlebih dahulu melihat tugasan di atas, kemudian menyemak sama ada sampel yang sama juga menunjukkan puncak lain yang dijangka untuk motif struktur yang sama. Jalur tunggal berhampiran 1628 cm⁻¹ biasanya tidak mencukupi untuk pengenalpastian bahan dengan sendirinya.
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
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Hydroxyl (O-H) keyakinan 1.0
“Obvious Fourier transform infrared cm-1, cm-1, (FTIR) spectra for the GT extract were observed, showing absorption bands at 3401 1628 cm-1, and 1029 corresponding to O-H/N-H, C=O, and C-O groups, respectively.”
Aziz 等 - 2017 - From Insulating PMMA Polymer to Conjugated Double DOI: 10.3390/polym9110626 -
keyakinan 1.0
“The cm-1 180 peaks around 1628, 1512, 1384, 1258, 1028 and 688 indicating the possible presence of 181 N-H bend, C-C, C-H, C-N stretch and =C-H groups of amines, aromatics, alkanes, and 182 aliphatic amines (Irshad et al., 2017;”
Bio-inspired synthesis of flower shaped iron oxide nanoparticles (FeONPs) using phytochemicals of Solanum lycopersicum leaf extract for biomedical applications DOI: 10.1016/j.bcab.2020.101698 -
Hydroxyl (O-H) keyakinan 1.0
“The peak at 1710 was standard[24] according to the ASTM from the data attributed to the C = O stretching vibrations in the of three-point bend test at 1 month storage time by cm-1 carboxylic group and the peak at 1628 was drawing a tangent”
Fareed 和 Stamboulis - 2014 - Nanoclay addition to a conventional glass ionomer DOI: 10.4103/1305-7456.143619 -
Hydroxyl (O-H) keyakinan 1.0
“centered at 3425 The absorption peaks centered at cm-1 1628 and 1384 is ascribed to O-H bending vibrations on the surface of nano-composite.”
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) keyakinan 1.0
“The band at 1627.92 indicates the presence of a -COOH group cm-1 and the band on 1519.91 indicate of -NH group.”
Hastuti 和 Assya'adha - 2020 - Synthesis and Characterization of Chitosan Membran DOI: 10.1088/1757-899X/833/1/012068 -
Alkene (C=C) keyakinan 1.0
“The absorption bands situated at about 1628 and of wavelength were assigned to the C=C as well as O-H stretching vibrational movements.”
Jing 等 - 2019 - Biosynthesis of copper oxide nanoparticles and the DOI: 10.1016/j.jphotobiol.2019.111557 -
Water (H2O) keyakinan 1.0
“cm-1 well equivalent with the rutile structure of SnO The band at 1628 may be due to the bending 2 There are new diffraction peaks observed with the values of vibration of the hydrogen-bonded water molecules within the”
Hybrid structure of biotemplate-zinc-tin oxide for better optical, morphological and photocatalytic properties DOI: 10.1088/1361-6641/aa577c -
Water (H2O) keyakinan 1.0
“3 A (3) C OeH In IR spectrum the stretching and deformation vibration peaks 1628cm-1 assigned at 3430 and are due to the adsorbed water moleis the absorbance control, and A is the sample absorWhere, A C S”
Green synthesis of ionic liquid assisted ytterbium oxide nanoparticles by Couroupita guianensis abul leaves extract for biological applications DOI: 10.1016/j.jece.2020.103992
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