波谱学杂志 ›› 2012, Vol. 29 ›› Issue (1): 78-85.

• 研究论文 • 上一篇    下一篇

自主研制核磁共振波谱仪的性能评估

杨亮1,2,鲍庆嘉1,3,毛文平1,2,刘朝阳1*   

  1. 1. 波谱与原子分子物理国家重点实验室,武汉磁共振中心(中国科学院 武汉物理与数学研究所),湖北 武汉 430071; 
    2. 中国科学院 研究生院,北京 100049; 
    3. 华中科技大学 物理系,湖北 武汉 430074
  • 收稿日期:2011-05-04 修回日期:2011-05-14 出版日期:2012-03-05 发布日期:2012-03-05
  • 基金资助:

    国家自然科学基金资助项目(10675162, 20825520);国家科技支撑计划资助项目(2006BAK03A22).

System Performance Evaluation of a Self-Developed NMR Spectrometer

 YANG Liang1,2, BAO Qiang-Jia1,3, MAO Wen-Ping1,2, LIU Chao-Yang1*   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China;
    3. Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2011-05-04 Revised:2011-05-14 Online:2012-03-05 Published:2012-03-05
  • Supported by:

    国家自然科学基金资助项目(10675162, 20825520);国家科技支撑计划资助项目(2006BAK03A22).

摘要:

主要介绍自主研制500 MHz核磁共振谱仪的性能评估情况,旨在建立一台功能完整的核磁共振波谱仪. 首先利用系统调试使控制台各个硬件单元在用户软件控制下实现NMR实验中的基本功能,然后通过性能测试保障功率线性度、信号稳定性和场频联锁的可靠性,实验验证了谱仪溶剂峰压制的效果,并获得良好的探头线形指标(0.43/5.46/10.73 Hz)和1H灵敏度指标(信噪比为728∶1),表明自主研制500 MHz核磁共振波谱仪系统能够满足常规核磁共振实验需求.

关键词: 核磁共振波谱仪, 稳定性, 性能测试, 溶剂峰抑制

Abstract:

A completelly functional 500 MHz NMR spectrometer, developed by ourselves, was evaluated for its performance. System debugging was performed to demonstrate the basic functions of each unit. Performance tests were performed to evaluate the specifications, including power linearity, signal stability and field-frequency lock system. The solvent suppression experiement was performed to verified the functionality of the spectrometer. Satisfactory results (Line shape 0.43/5.46/10.73 Hz; signal-to-noise ratio 728∶1) were obtained with a normal indirect detection probe manufactured by JS Research Inc. The ourcomes of the experiments demonstrates that the self-developed NMR spectrometer can fulfill the demands of routine NMR experiments.

Key words: NMR spectrometer, stability, performance test, solvent suppression

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