Apakah yang menyerap pada 1627 cm⁻¹ dalam spektrum FTIR?
Jalur berhampiran 1627 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 1627 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 | 22 | 20 | 1.0 |
| Carboxyl (COOH) | 13 | 11 | 1.0 |
| Methacrylate | 12 | 11 | 1.0 |
| Acetate | 12 | 11 | 1.0 |
| Carbonyl (C=O) | 12 | 11 | 1.0 |
| Alkene (C=C) | 9 | 8 | 1.0 |
| N h | 9 | 8 | 1.0 |
| Ketone | 8 | 7 | 1.0 |
| Ester | 8 | 7 | 1.0 |
| Hydroxyl (O-H) | 5 | 5 | 1.0 |
| C-O single bond | 5 | 5 | 1.0 |
| Alkyl C-H | 5 | 5 | 1.0 |
| Secondary amine | 5 | 4 | 1.0 |
| Methoxy (OCH3) | 4 | 4 | 1.0 |
| Aromatic ring | 4 | 3 | 1.0 |
| C n single bond | 3 | 3 | 1.0 |
| C=n | 3 | 3 | 1.0 |
| Protein beta sheet | 3 | 2 | 1.0 |
| Ring structure | 2 | 2 | 1.0 |
| Water (H2O) | 2 | 2 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1.0 |
| Aldehyde (CHO) | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Carbon dioxide | 1 | 1 | 1.0 |
| Protein alpha helix | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
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 |
|---|---|---|---|
| pectin | 1627, 1746, 1150 | Methacrylate, Acetate, Carboxyl (COOH) | 1 |
| ZnO NPs | 1627, 1664, 875 | Amide, Methacrylate, Acetate | 1 |
| CdS | 1627, 1375, 1092 | Methacrylate, Acetate | 1 |
| calcium phosphate | 1627, 1070, 1149 | Methacrylate | 1 |
| alginate | 1627, 1100, 1715 | Methacrylate, Acetate, Carboxyl (COOH) | 1 |
| epoxy | 1627, 1660, 1735 | Methacrylate, Acetate, Amide | 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 1627 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
“Meanwhile, a moderately sharp peak emerged cm-1 at 1627 corresponds to the hydroxyl (O-H) bending vibrational mode [32].”
Aziz 等 - 2023 - Water remediation capability of cubic-phase CdS na DOI: 10.15251/DJNB.2023.181.203 -
Carbonyl (C=O) keyakinan 1.0
“cm-1 and 2856 are characteristic stretch, two bands at 2933 viewed at wileyonlinelibrary.com] ─CH ─CH of aliphatic asymmetric and symmetric stretching of 2 cm-1 verified groups, and the amidic carbonyl stretch at 1627 the”
Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy DOI: 10.1002/app.48404 -
Acetate keyakinan 1.0
“cm-1, the monomers of both gums, as well as the bands present at 1627 and 1409 which are related to The band on the scaffold spectrum at 1149 cm-1 is derived from the C-O type bonds present in the monomers of both gums, as well as the bands”
Development of Composite Scaffolds Based on Cerium Doped-Hydroxyapatite and Natural Gums—Biological and Mechanical Properties DOI: 10.3390/ma12152389 -
C=n keyakinan 1.0
“cm-1, For quantification, absorbance of C=O stretch cantered at 1754 between wave number of 1750 - cm-1 cm-1, 1730 was selected for Aspirin and absorbance of C=N stretch cantered at 1627 between 1690 cm-1 - 1620 was used for Omeprazole.”
Chandarana 和 Kapupara - 2020 - Fourier Transform Infrared Spectrophotometry An E DOI: 10.30744/brjac.2179-3425.AR-25-2020 -
Amide keyakinan 1.0
“The FTIR spectrum of extracellular mycosynthesis of ZnO NPs by Alternaria alternata cm-1 showed the absorption band at 1627 corresponding to the amide I of polypeptides [18].”
An Investigation of the Cytotoxicity and Caspase-Mediated Apoptotic Effect of Green Synthesized Zinc Oxide Nanoparticles Using Eclipta prostrata on Human Liver Carcinoma Cells DOI: 10.3390/nano5031317 -
Carbonyl (C=O) keyakinan 1.0
“The band at 1627 was Lathyrus sativus peel extract could be conceptualized by the following (C-- ascribed due to the carbonyl group O) of carboxylic acid (capping reaction Scheme 1 proposed by (Awwad and Salem, 2012) and (Ramesh cm(cid:0) 1”
Green synthesis of magnetite nanoparticles using Lathyrus sativus peel extract and evaluation of their catalytic activity DOI: 10.1016/j.clet.2021.100117 -
Acetate keyakinan 1.0
“Moreover, the peak at 1627 corresponds to -C=O cm-1 should be a sign of the excess of GA [18] and the disappearance of peak at 1400 for -CH and -CH”
Hendrawanh 等 - 2019 - Poly (vinyl alcohol)glutaraldehydePremna oblongi DOI: 10.1088/1757-899X/509/1/012048 -
Carboxyl (COOH) keyakinan 1.0
“Stronger to carboxyl ion stretching band Cumolative intensity of ester carbonyl peak at 1746 compared to 40 free carboxyl band at 1627 indicated an increase in the”
Nisinloaded alginatehigh methoxy pectin microparticles: preparation and physicochemical characterisation DOI: 10.1111/ijfs.12516
Ada spektrum dengan jalur ini?
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — tugasan puncak dengan petikan literatur, padanan perpustakaan, dan analisis berasaskan literatur — dalam beberapa saat.