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核磁共振系指一个射频场引起有磁矩的原子核与外磁场相互作用而产生的磁能之间的跃迁。核磁共振波谱仪是基于核磁矩不等于零的原子核,在静磁场作用下,对稳定频率电磁波的吸收现象来研究物质结构的一种工具。分析工作者从共振峰的数和相对的强度、化学位移和驰豫时间等参数进行物质结构分析。一、核磁共振波谱仪的发展由于核磁共振技术具有深入物质内部,而不破坏样品的特点,并随着核磁共振理论及波谱仪器的迅速发展,核磁共振波谱仪的
Nuclear magnetic resonance refers to the transition between a magnetic field produced by a radio-frequency field that causes a magnetic moment of an atomic nucleus to interact with an external magnetic field. NMR spectrometer is based on nuclear magnetic moment is not equal to zero nuclear, under the action of static magnetic field, the phenomenon of electromagnetic wave absorption of stable frequency to study the material structure of a tool. Analysts carried out material structure analysis from parameters such as the number of formants and relative intensities, chemical shifts and relaxation times. First, the development of nuclear magnetic resonance spectroscopy NMR technology has in-depth material within without destroying the characteristics of the sample, and with the rapid development of nuclear magnetic resonance spectroscopy and instrumentation, nuclear magnetic resonance spectroscopy