Apakah yang menyerap pada 1044 cm⁻¹ dalam spektrum FTIR?
Jalur berhampiran 1044 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 1044 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 |
|---|---|---|---|
| C-O single bond | 16 | 16 | 1.0 |
| Acetate | 14 | 14 | 1.0 |
| Methoxy (OCH3) | 13 | 13 | 1.0 |
| Methacrylate | 13 | 13 | 1.0 |
| Carbohydrate | 5 | 5 | 1.0 |
| Phosphate (PO4) | 4 | 3 | 1.0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 3 | 3 | 1.0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Nucleic acid | 2 | 2 | 1.0 |
| S eq o | 2 | 2 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Thiol | 1 | 1 | 1.0 |
| C-S single bond | 1 | 1 | 1.0 |
| Fatty acid | 1 | 1 | 1.0 |
| Thiocarbonyl | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| N-O bond | 1 | 1 | 1.0 |
| Urethane | 1 | 1 | 0.9 |
| Aldehyde (CHO) | 1 | 1 | 0.9 |
| Alkyl C-H | 1 | 1 | 0.7 |
| Phospholipid | 1 | 1 | 0.7 |
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 |
|---|---|---|---|
| cellulose | 1044, 1735, 1650 | Acetate, Methacrylate, C-O single bond | 1 |
| lignin | 1044, 1035, 1510 | Methacrylate, Acetate, C-O single bond | 1 |
| kraft lignin | 1044, 1744, 1710 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| chitosan | 1044, 1650, 1655 | Acetate, Methacrylate, C-O single bond | 1 |
| glycerol | 1044, 1585, 1630 | Methacrylate, Acetate, C-O single bond | 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 1044 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
-
Acetate keyakinan 1.0
“Another cm-1 obvious sharp peak credited to the C-O stretching is observed at 1044, 1043, and 1039”
Structural, Electrical and Electrochemical Properties of Glycerolized Biopolymers Based on Chitosan (CS): Methylcellulose (MC) for Energy Storage Application DOI: 10.3390/polym13081183 -
Acetate keyakinan 1.0
“However, as the number of lithium ions increased, the interactions between the lithium ions and the oxygen atoms (C=O) in the acetate ions or the carboxylate ions became more cm-1 dominant, and therefore the intensity of the peak at 1044 de”
Mobarak 等 - 2015 - Carboxymethyl Carrageenan Based Biopolymer Electro DOI: 10.1016/j.electacta.2015.02.200 -
keyakinan 1.0
“x cm-1, cm-1, He/O 1044 Si-O-Si network stretch at 1107 and Si-O-Si the treated sample compared to the O ashed film can be 2 2 cm-1.”
Vinogradova 等 - 2008 - Application of deuterium exchange to analyze moist DOI: 10.1149/1.2947786(cid:2) -
Carbohydrate keyakinan 1.0
“expressive increase in the intensity of the peaks near 1044 and 1075 Lipids cm(cid:5)1, related to soluble sugars in general, structural carbohydrates and Nucleicacids components with phosphorus in its composition.”
Modelling the vigour of maize seeds submitted to artificial accelerated ageing based on ATR-FTIR data and chemometric tools (PCA, HCA and PLS-DA) DOI: 10.1016/j.heliyon.2020.e03477 -
Acetate keyakinan 1.0
“The highest peaks at 1086 and cm-1 1044 are ascribed to the C-O stretch absorption bands, which are important regions for ethanol 1044 cm-1 are ascribed to the C-O stretch absorption bands, which are important regions for ethanol and methan”
Application of Functional Data Analysis and FTIR-ATR Spectroscopy to Discriminate Wine Spirits Ageing Technologies DOI: 10.3390/math8060896 -
N-O bond keyakinan 1.0
“~1456 ~1403 and 1236 Howcm-1/1038 cm-1 ever, the spectral absorption bands of malignant and benign samples in ~1044 cm-1/876 cm-1 and ~884 regions showed no significant differences.”
ATR-FTIR spectroscopy as adjunct method to the microscopic examination of hematoxylin and eosin-stained tissues in diagnosing lung cancer DOI: 10.1371/journal.pone.0233626 -
Acetate keyakinan 1.0
“Among 401 cm-1 them, the absorption at 1044 was mainly attributed to C-O stretching on C-O-C 402”
Beltramino 等 - 2016 - Optimization of sulfuric acid hydrolysis condition DOI: 10.1007/s10570-016-0897-y -
S eq o keyakinan 1.0
“The S=O stretching vibration of DMSO appears at 1044 cm-1 at 1044 and will therefore not overlap with any C=O vibrations of interest in the and will therefore not overlap with any C=O vibrations of interest in the analytes.”
The Effect of Sample Preparation Techniques on Lignin Fourier Transform Infrared Spectroscopy DOI: 10.3390/polym15132901
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.