自主研制核磁共振波谱仪的性能评估  

System Performance Evaluation of a Self-Developed NMR Spectrometer

作　　者：杨亮[1,2] 鲍庆嘉[1,3] 毛文平[1,2] 刘朝阳[1] 

机构地区：[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

出　　处：《波谱学杂志》2012年第1期78-85,共8页Chinese Journal of Magnetic Resonance

基　　金：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500MHz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(0.43/5.46/10.73Hz)和1 H灵敏度指标(信噪比为728∶1),表明自主研制500MHz核磁共振波谱仪系统能够满足常规核磁共振实验需求.A completelly functional 500 MHz NMR spectrometer, developed by our- selves, was evaluated for its performance. System debugging was performed to demon- strate the basic functions of each unit. Performance tests were performed to evaluate the specifications, including power linearity, signal stability and field-frequency lock sys- tem. 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.

关 键 词：核磁共振波谱仪 稳定性 性能测试 溶剂峰抑制 

分 类 号：O482.53[理学—固体物理]