JEOL在核磁共振技术的发展上拥有丰富的经验，在持续发展的NMR应用域，不断地提供应用支持。

JEOL的核磁共振仪设计应用于实验室的化学合成分子特性分析、混合物分析、固体材料分析、生物分子分析，是操作简便、运行可靠的核磁共振系统。其中，固体核磁系统已经具备全球*完整的探头产品线，以及*简便的操作模式，可以针对不同的应用，提供*好的使用体验。         

1. Compact spectrometer

The JNM-ECS is a compact system having the same 2 channel liquid analysis capabilities as the JNM-ECA. Its installation space is reduced to a half of the conventional system. The ECS400, combined with an SCM featuring minimum magnetic stray field, can be configured in many different layouts.

2. Advanced architecture proven in JNM-ECA series

The JNM-ECS spectrometer maintains the multi sequencer system used in the JNM-ECA/ECX series with a field gradient power supply as a standard feature. The programmable sequencer integrated in each channel controls all channels regardless of pulse synchronicity. This enables trouble free operation of all pulse programs used for routine analysis as well as editing ａnd execution of longer, more complicated pulse programs.

3. Stable, high sensitivity digital spectrometer

The JNM-ECS spectrometer, composed of fully digitized circuitry including RF generator, NMR lock, ａnd digital matrix shim, maintains high stability needed to acquire high quality spectral data. The stable spectrometer is especially effective in solvent signal elimination ａnd differential spectrum acquisition. Like the JNM-ECA/ECX series, the JNM-ECS acquires high quality NMR spectra in various applications.

4. High sensitivity auto tune probe

The auto tune probe system, JEOL’s latest creation ａnd provided standard in the JNM-ECS, has achieved the highest sensitivity level in the world as a room temperature probe, enabling speedy analysis with ease of operation. This high sensitivity is an answer to the NMR applications that require increasingly rapid data acquisition.

5. Advanced software ａnd automation

The JNM-ECS uses the Delta software, proven in the JNM-ECA/ECX series, for spectrometer control ａnd data processing. Combining Delta’s automation interface ａnd the standard gradient shimming, the system can be activated with a single click of a button, acquiring data at the optimum resolution. Use of the auto sample changer ａnd auto tuning can automate the entire process of routine analysis.

6. Network spectrometer

The JNM-ECS spectrometer makes full use of networking just like the JNM-ECA/ECX series. The spectrometer, operating independently from the host computer, can be controlled from any authorized computer on the network.  

MICCS-NMR应用实例(2)

用于合成监测的微通道试样管- NMR (Micro Channeled Cell for Synthesis monitoring - NMR)

自由基加成反应~反应速度论~

反应.

这是合成胺类化合物使用的EtB(三乙基硼)向肟醚转

化的自由基加成反应。反应过程中显示有硼素络合物

中间体存在的可能，但在水分子的作用下，会迅速地

进行反应。

测试方法

在保持每种原料的流量比例不变的同时，改变整个试

样的流速。这样，试样从MICCS的混合部位到达NMR

检测部位所需的时间就会不同，由此便可获得反应速

度的相关信息。在下面的反应实例中，肟醚与三乙基

硼的流量始终保持在1:1的比例，随着整个试样流速

的降低，会出现原料信号逐渐减少而中间体信号强度

逐渐增大的结果。