So sánh phương pháp
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| Quang phổ khối cộng hưởng cyclotron ion biến đổi Fourier (FT-ICR)× | NOESY× | |
|---|---|---|
| Lĩnh vực | Quang phổ học | Quang phổ học |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1974 | 1981 |
| Người khởi xướng≠ | Alan Marshall | Richard Ernst |
| Loại≠ | Mass spectrometry technique | Two-dimensional pulse sequence |
| Công trình gốc≠ | Comisarow, M. B., & Marshall, A. G. (1974). Fourier transform ion cyclotron resonance spectroscopy. Chemical Physics Letters, 25(2), 282-283. DOI ↗ | Aue, W. P., Bartholdi, E., & Ernst, R. R. (1976). Two-dimensional spectroscopy. Application to nuclear magnetic resonance. The Journal of Chemical Physics, 64(5), 2229-2246. DOI ↗ |
| Tên gọi khác | FT-ICR-MS, Fourier Transform ICR, ICR mass spectrometry | NOE spectroscopy, 2D NOESY, NOE NMR |
| Liên quan≠ | 4 | 3 |
| Tóm tắt≠ | Fourier Transform Ion Cyclotron Resonance (FT-ICR) mass spectrometry is an advanced analytical technique that combines magnetic confinement of ions with Fourier transform data processing to achieve exceptional mass accuracy and resolution. Developed by Comisarow and Marshall in 1974, FT-ICR-MS enables the determination of exact masses and elemental compositions of complex molecules, making it invaluable for environmental chemistry, metabolomics, petroleum characterization, and structural elucidation of unknowns. | Nuclear Overhauser Enhancement Spectroscopy (NOESY) is a 2D NMR technique that detects through-space dipolar coupling between protons, rather than through-bond scalar coupling. Introduced by Macura and Ernst in 1981, NOESY reveals which protons are spatially close in the three-dimensional structure, independent of bonding connectivity. This makes NOESY invaluable for determining molecular conformation, assigning stereochemistry, and elucidating protein folds. |
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