The impact of pulse duration on composite WATERGATE pulse
文献类型：期刊论文
| 作者 | Wang, Jingjing1,2; Zhang, Xu1; Sun, Peng1,2; Jiang, Xianwang1,2; Jiang, Bin1 ; Cao, Chunyang3; Liu, Maili1
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| 刊名 | JOURNAL OF MAGNETIC RESONANCE
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 206期号:2页码:205-209 |
| 关键词 | Solvent suppression WATERGATE RF pulse Chemical shift evolution |
| 产权排序 | 第一 |
| 英文摘要 | As an effective method for solvent suppression, WATERGATE is widely used in high resolution NMR spectroscopy. It is usually composed of a number of pulses separated by constant intervals. However, theoretical and experimental analyses indicate that narrower bandwidth and lower intensities around the secondary suppression points occur in the excitation profile of the composite WATERGATE. The excitation profile distortion is caused by the chemical shift evolution during the RF pulses. The higher the ratio of pulse duration to the inter-pulse delay is, the severer the profile distorts. Therefore, in high magnetic fields, the effect will be serious when WATERGATE is applied to some biological samples whose resonances distribute over a wide range. As can be seen obviously by applying WATERGATE to detect a RNA-protein mixture sample in an 800 MHz spectrometer, the resonances of the imino protons were partially suppressed by showing decreased intensities, though the intended secondary suppression points were set far away from them. In this article, we proposed an optimized WATERGATE that could effectively compensate the chemical shift evolution during the RF pulses, and relieve the excitation profile distortion. The optimized experiment will be a good way to retain the imino signal intensities when WATERGATE is applied to detect the RNA samples in high magnetic field. (C) 2010 Elsevier Inc. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology |
| 学科主题 | 波谱分析 |
| 类目[WOS] | Biochemical Research Methods ; Physics, Atomic, Molecular & Chemical ; Spectroscopy |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Physics ; Spectroscopy |
| 关键词[WOS] | RESOLUTION NMR-SPECTROSCOPY ; SOLVENT-SIGNAL SUPPRESSION ; FIELD GRADIENTS ; DIFFUSION MEASUREMENTS ; RESIDUAL WATER ; SEQUENCE ; EXCITATION ; WET ; SENSITIVITY ; RELAXATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000282196900004 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/2029]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, State Kay Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Organ Chem, Shanghai 200032, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jingjing,Zhang, Xu,Sun, Peng,et al. The impact of pulse duration on composite WATERGATE pulse[J]. JOURNAL OF MAGNETIC RESONANCE,2010,206(2):205-209. |
| APA | Wang, Jingjing.,Zhang, Xu.,Sun, Peng.,Jiang, Xianwang.,Jiang, Bin.,...&Liu, Maili.(2010).The impact of pulse duration on composite WATERGATE pulse.JOURNAL OF MAGNETIC RESONANCE,206(2),205-209. |
| MLA | Wang, Jingjing,et al."The impact of pulse duration on composite WATERGATE pulse".JOURNAL OF MAGNETIC RESONANCE 206.2(2010):205-209. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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