Lipid — Puncak serapan FTIR dan tugasan
Ini ialah nombor gelombang FTIR ciri apabila Lipid cenderung menyerap, yang dihimpunkan daripada literatur yang diterbitkan dan diperingkat berdasarkan bukti sokongan. Setiap penetapan boleh dijejaki kepada sumber (DOI) dan disahkan silang terhadap 320,000+ spektrum rujukan serta graf pengetahuan kami.
Disokong oleh 8 sumber yang dipetik
Jawapan pantas
Lipid biasanya ditetapkan dengan mencari kelompok berulang puncak ciri dan bukan satu nombor tepat buku teks. Jadual di bawah menunjukkan di mana literatur paling kerap meletakkan kumpulan ini dalam FTIR, yang disusun mengikut bukti terkumpul.
Puncak FTIR ciri untuk Lipid
| Nombor gelombang (cm⁻¹) | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| 1740 | 18 | 16 | 1.0 |
| 2850 | 14 | 13 | 1.0 |
| 1745 | 11 | 10 | 1.0 |
| 2925 | 10 | 10 | 1.0 |
| 2920 | 10 | 8 | 1.0 |
| 1735 | 6 | 5 | 1.0 |
| 1737 | 6 | 5 | 1.0 |
| 2924 | 5 | 5 | 1.0 |
| 2922 | 5 | 5 | 1.0 |
| 2800 | 5 | 3 | 1.0 |
| 2852 | 4 | 4 | 1.0 |
| 1743 | 4 | 4 | 1.0 |
| 1450 | 4 | 4 | 1.0 |
| 2853 | 4 | 4 | 1.0 |
| 2854 | 4 | 4 | 1.0 |
| 2923 | 4 | 4 | 1.0 |
| 1742 | 4 | 4 | 1.0 |
| 2855 | 4 | 4 | 1.0 |
| 2928 | 4 | 3 | 1.0 |
| 1465 | 4 | 3 | 1.0 |
| 1744 | 4 | 3 | 1.0 |
| 1462 | 3 | 3 | 1.0 |
| 3012 | 3 | 3 | 1.0 |
| 1444 | 3 | 3 | 1.0 |
| 1540 | 3 | 3 | 1.0 |
| 2918 | 3 | 3 | 1.0 |
| 2900 | 3 | 3 | 1.0 |
| 2870 | 3 | 3 | 1.0 |
| 1455 | 3 | 3 | 1.0 |
| 1380 | 3 | 3 | 1.0 |
Menunjukkan 30 puncak terbaik disokong daripada 205 jumlah untuk Lipid.
Logik spektrum
Tugasan kumpulan berfungsi menjadi lebih yakin apabila beberapa jalur yang dijangkakan muncul bersama. Gunakan halaman ini untuk mencari puncak yang paling disokong, kemudian sahkan bahawa sampel yang sama menunjukkan corak yang koheren dan bukannya satu hit terpencil.
Penggunaan dunia sebenar
Halaman-halaman ini berguna untuk analisis bahan yang tidak diketahui, penjelasan puncak dalam laporan, penyelesaian masalah polimer, dan mengesahkan sama ada keluarga bahan calon adalah boleh dipercayai secara kimia.
Kesilapan biasa
- Menggunakan satu halaman kumpulan berfungsi sebagai keputusan bahan lengkap tanpa memeriksa spektrum yang lain.
- Dengan menganggap jalur yang paling kuat sentiasa menjadi yang paling diagnostik.
- Melupakan bahawa pemprosesan, bahan tambahan, penuaan, dan campuran boleh mengalihkan atau melebarkan puncak yang dijangkakan.
Nasihat pengesahan
Gunakan DSC, GC-MS, atau TGA apabila beberapa keluarga bahan berkongsi jalur yang serupa atau apabila kesan campuran menyebabkan tugasan FTIR tidak pasti.
Literatur di sebalik penetapan ini
-
1468 cm⁻¹ keyakinan 1.0
“The 1468 peak was correlated to CH bending vibrations of lipids.”
The Effect of High-Intensity Ultrasound and Natural Oils on the Extraction and Antioxidant Activity of Lycopene from Tomato (Solanum lycopersicum) Waste DOI: 10.3390/antiox11071404 -
2920 cm⁻¹ keyakinan 1.0
“A sharp peak at 2920 and 2850 was attributed to the presence of polysaccharides, lipids, and carbohydrates (C-H stretch).”
Classification and identification of Rhodobryum roseum Limpr. and its adulterants based on fourier-transform infrared spectroscopy (FTIR) and chemometrics DOI: 10.1371/journal.pone.0172359 -
1709 cm⁻¹ keyakinan 1.0
“In comparison to native cm-1 starch, the FTIR spectra of the starch-lipid complexes revealed one extra band at 1709 starch, the FTIR spectra of the starch-lipid complexes revealed one extra band at 1709 cm-1 (Figure 4).”
Formation of Intermediate Amylose Rice Starch–Lipid Complex Assisted by Ultrasonication DOI: 10.3390/foods11162430 -
1780 cm⁻¹ keyakinan 1.0
“LLM confirmed rule peak-group candidate”
Comparing dried and liquid blood serum samples of depressed patients: An analysis by Raman and infrared spectroscopy methods DOI: 10.1016/j.jpba.2017.11.074 -
2923 cm⁻¹ keyakinan 1.0
“Peaks at 2923 and 2853 were mainly associated with the hydrocarbon chains of the lipids or lignins [40].”
Comparative Analysis of the Phenolic Profile of Lycium barbarum L. Fruits from Different Regions in China DOI: 10.3390/molecules27185842 -
1735 cm⁻¹ keyakinan 1.0
“The shift in the peak at 1082 22 nificant differences among primary cells, cell lines and malignant the environment near the PO group underwent a series of cm21, cells in the shapes of the band at 1735 which may be alterations during malign”
Erukhimovitch 等 - 2002 - Spectroscopic characterization of human and mouse DOI: 10.1562/0031-8655(2002)076 -
1742 cm⁻¹ keyakinan 1.0
“In the vicinity of 1800~1400 187 cm-1 there were three important lipid peak at 1742, 1654, and 1438 relating to C=O 188 stretching, C=C stretching, and C-H scissoring deformation respectively.”
Complementarity of FT-IR and Raman spectroscopies for the species discrimination of meat and bone meals related to lipid molecular profiles DOI: 10.1016/j.foodchem.2020.128754 -
1464 cm⁻¹ keyakinan 1.0
“cm-1 cm-1, cm-1 cm-1 1351.855 for CH wagging, 1517.703 1538.917 and 1646.911 for amide II and amide 2 cm-1 I as well as the peak at 1463.706 assigned to CH scissoring mode of the acyl chain of lipids.”
Diagnosis of normal and malignant human gastric tissue samples by FTIR spectra combined with mathematical models DOI: 10.1016/j.molstruc.2020.129493
Lihat Lipid dalam spektrum anda sendiri
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — tugasan puncak dengan petikan literatur, padanan perpustakaan, dan analisis berasaskan literatur — dalam beberapa saat.