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Solid state nuclear magnetic resonance quantitative detection method and device based on successive cross polarization

A quantitative detection method, nuclear magnetic resonance technology, applied in the direction of using nuclear magnetic resonance spectrum for measurement, magnetic resonance measurement, measuring device, etc., can solve problems such as poor accuracy

Active Publication Date: 2021-02-12
SUZHOU UNIV
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  • Claims
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Problems solved by technology

[0004] Based on the above-mentioned shortcomings of the prior art, the present invention provides a solid-state nuclear magnetic resonance quantitative detection method and device based on successive cross-polarizations to solve the problem of detecting T 1ρ H Issues with poorer accuracy on shorter samples

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  • Solid state nuclear magnetic resonance quantitative detection method and device based on successive cross polarization
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  • Solid state nuclear magnetic resonance quantitative detection method and device based on successive cross polarization

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] First of all, in order to facilitate the understanding of the solution provided by the present application, two solid-state NMR detection methods are briefly introduced below.

[0041] The first solid-state nuclear magnetic resonance detection method is proposed based on the cross polarization (Cross Polarization, CP) phenomenon, using a single cross polarization pulse unit to realize the cross polarization detection method (CP method for short). This t...

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Abstract

The application provides a solid-state nuclear magnetic resonance quantitative detection method and device based on successive cross-polarizations. Based on a preset pulse sequence, the sample to be tested is measured on a solid-state nuclear magnetic resonance spectrometer to obtain a spectrum of the sample to be tested; the pulse sequence includes multiple A first pulse unit and a second pulse unit, the first pulse unit is used to increase the concentration of different groups in the sample to be tested 13 The enhancement coefficient of the signal of C nucleus; The second pulse unit is used for the sample to be tested 1 The magnetization vector of the H nucleus is fixed in the direction of the magic angle, and it is used for the 1 H core and 13 The C nucleus is cross-polarized, and then the proportion of each group in the sample to be tested is calculated according to the spectrum of the sample to be tested. The second pulse unit of this program will be tested in the sample 1 The magnetization vector of the H nucleus is fixed in the direction of the magic angle, thus prolonging the 1 T of H nuclei 1ρ H , to achieve the effect of improving the accuracy of quantitative detection.

Description

technical field [0001] The invention relates to the technical field of nuclear magnetic resonance, in particular to a solid-state nuclear magnetic resonance quantitative detection method and device based on successive cross-polarizations. Background technique [0002] Solid-state nuclear magnetic resonance quantitative detection technology is a technology used to quantitatively analyze the structure and components of solid samples. This technique is mainly to determine the initial spectrum of the sample to be analyzed by transmitting a preset pulse sequence to the solid sample to be analyzed, perform Fourier transformation on the initial spectrum, and obtain the processed spectrum by phase correction and baseline correction. , and finally integrate the peaks of each group in the processed spectrum to determine the proportion of each group or component in the sample to be analyzed. [0003] Among the existing solid-state NMR quantitative detection techniques, the most conven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/46
CPCG01R33/4608G01R33/4616
Inventor 舒婕唐丹丹王宁张志兰闫春辉唐明华
Owner SUZHOU UNIV
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