Nuclear magnetic resonance phase-sensitive two-dimensional J decomposition spectrum method for inhibiting strong coupling pseudo peak

A kind of nuclear magnetic resonance and spectral method technology, which is applied in the direction of analysis using nuclear magnetic resonance, measurement using nuclear magnetic resonance imaging system, magnetic resonance measurement, etc. The method suppresses the artifact signal of strong coupling and other problems, so as to achieve a significant inhibition effect and the effect of inhibiting strong coupling.
CN113281366AActive Publication Date: 2021-08-20XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2021-08-20

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Abstract

The invention provides a nuclear magnetic resonance phase-sensitive two-dimensional J decomposition spectrum method for inhibiting a strong coupling pseudo peak. The method is used for multi-peak analysis of a complex chemical sample, and relates to the field of magnetic resonance spectroscopy detection. According to the method, two chirp sweep frequency pulses in opposite directions are adopted to achieve the purpose of restraining strong coupling pseudo peaks, a PSYCHE module is used for acquiring pure chemical shift information at a direct dimension, the evolution effect of J coupling is eliminated, J coupling information is recovered again through the effect of refocusing chemical shift by a J sampling module at an indirect dimension, and data post-processing is performed on a collected original signal to obtain a nuclear magnetic resonance phase-sensitive J decomposition spectrum for inhibiting the strong coupling pseudo peak. The effect of inhibiting the strong coupling pseudo peak is remarkable, and the method has extremely important significance on research of pure chemical shift in a magnetic resonance spectrum.
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Description

technical field

[0001] The invention relates to the field of magnetic resonance spectroscopy detection, in particular to a nuclear magnetic resonance phase-sensitive two-dimensional J-decomposition method for suppressing strong coupling false peaks Background technique

[0002] NMR spectroscopy is an important technology in the field of NMR, in which the study of pure chemical shifts and J coupling constants plays a pivotal role, and is often used in molecular structure analysis of substances, object detection and other fields. At this stage, NMR spectroscopy technology faces many challenges, including 1 The narrow chemical shift distribution range (0-15ppm) and extensive J-coupling splitting of the H nucleus in the one-dimensional spectrum make the chemical shift and J-coupling information displayed in the one-dimensional spectrum very crowded, which is not conducive to people's analysis of the molecular structure. Therefore, most of these studies display information in th...

Claims

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