| 抑制HMQC实验中与碳-12相连质子的信号 |
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| 引用本文： | 丁克洋.抑制HMQC实验中与碳-12相连质子的信号[J].波谱学杂志,2000,17(2):131-135. |
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| 作者姓名： | 丁克洋 |
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| 作者单位： | 中国科学院广州化学研究所, 广州 510650 |
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| 摘 要： | 建议了一个新的HMQC实验的脉冲序列,其准备期和混合期分别为90°x(1H)-τ/2-180°x(1H,13C)-τ/2-90°x(1H,13C)和90°x(13C)-τ/2-180°x(1H,13C)-τ/2-,以及τ=(2JCH)-1(JCH为C-H偶合常数).在这个新的HMQC实验中,与碳-12相连质子的信号被有效地抑制,其抑制的机理与脉冲的相位循环无关.从而,它可以用于有效地抑制HMQC谱的噪音.特别是,在没有脉冲梯度场装置时,该方法显得非常实用
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| 关 键 词： | 异核多量子相关 噪音抑制 反式探测 相敏 |
| 收稿时间： | 1999-12-21 |
THE SUPPRESSION OF SIGNALS OF PROTONS ATTACHED TO CARBON-12 IN HMQC SPECTRA |
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| DING Keyang.THE SUPPRESSION OF SIGNALS OF PROTONS ATTACHED TO CARBON-12 IN HMQC SPECTRA[J].Chinese Journal of Magnetic Resonance,2000,17(2):131-135. |
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| Authors: | DING Keyang |
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| Institution: | Guangzhou Institute of Chemistry, The Chinese Academy of Sciences, Guangzhou 510650 |
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| Abstract: | A new pulse sequence for noise reduction in phase-sensitive HMQC experiment is proposed by setting 90°x(1H)-τ/2-180°x(1H,13C)-τ/2-90°x(1H,13C) and 90°x(13C)-τ/2-180°x(1H,13C)-τ/2- with τ=(2JCH)-1 (JCH is the one-bond coupling constant) as the preparation and the mixing schemes,respectively. The suppression of signals of protons attached to carbon-12 can be achieved in only one scan irrespective of pulse phase cycles. The proposed method provides an alternative approach for noise reduction in HMQC measurements. |
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| Keywords: | HMQC Noise reduction Inverse detection Phase sensitive |
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