Nuclear magnetic resonance analysis device with high resolution ratio

Abstract

The invention discloses a nuclear magnetic resonance analysis device with high resolution ratio. The nuclear magnetic resonance analysis device comprises a frequency meter, a radiofrequency oscillator, radiofrequency coils, a modulation receiver, a sample tube, a first magnetic body and a second magnetic body. The radiofrequency coils include rectangular coil units in even number, one long edge of each rectangular coil unit extends to form a first transmission line locating at the axis, and one short edge adjacent to the long edge bends to extend to form a second transmission line. The sample tube is mounted on a rotor adapter which comprises a column with a through hole; an upper fastener and a lower fastener are respectively arranged on the upper end face and the lower end face of the column; each of the upper fastener and the lower fastener consists of a plurality of fastener pieces, the fastener pieces are arranged along the circumference of each end face at intervals, and thus, the through hole for holding the sample tube is reserved at the center of the upper fastener and the lower fastener. A column cap is arranged on the upper portion of the column and positioned on the periphery of the upper fastener. The first magnetic body and the second magnetic body are respectively positioned on two sides of the sample tube. The nuclear magnetic resonance analysis device has high quality factors. High-power excitation and effective radiofrequency magnetic field distribution are realized, while measurement precision and sensitivity are improved greatly. Besides, stability of samples during rotating is improved, and jamming rate during sample feeding is lowered.

Description

technical field

[0001] The invention relates to the field of nuclear magnetic resonance analysis devices, in particular to a high-resolution nuclear magnetic resonance analysis device. Background technique

[0002] In view of the wide application of nuclear magnetic resonance technology in basic research such as chemistry and biology, as well as in clinical medicine and drug development, various high-resolution nuclear magnetic resonance analysis techniques have become important tools in biochemical research. To obtain high-quality NMR spectra, parameters such as the variable temperature performance and rotation stability of the NMR rotor adapter are very important. In particular, if you want to obtain high-resolution NMR spectra, you need to use a rotor adapter with a large temperature range (-200 to 200°C) and rotate the sample (greater than 20 rpm). At this time, you need to ensure the stability of the sample tube during rotation. sex. The magnetic susceptibility and ma...

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