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US 12,736,489 B2Granted
NMR measurement apparatus, and method of identifying solvent
AssigneeJEOL Ltd.
InventorsHiroaki Sasakawa, Katsuo Asakura, Kenya Izumi
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Abstract
An NMR spectrum is acquired from a nucleus of interest in a solvent included in a sample solution. A spectrum analyzer analyzes a number of splits, a splitting interval, a number of signals, and a signal interval based on the NMR spectrum. Based on these characteristic quantities, an identifier identifies the solvent. In another configuration, a plurality of NMR spectra acquired from a plurality of nuclei of interest included in the solvent may be analyzed.
Claims7
An NMR measurement apparatus comprising at least one processor configured to:
- acquire an NMR spectrum from a nucleus of interest in a solvent included in a sample solution, the NMR spectrum comprising a characteristic portion intrinsic to the nucleus of interest;
- analyze the characteristic portion, to thereby identify splitting information for a particular nucleus-of-interest signal included in the characteristic portion, wherein the splitting information comprises a number of splits and a splitting interval;
- identify the solvent based on the number of splits and the splitting interval;
- identify a reference frequency based on the solvent;
- and
- control the NMR measurement apparatus to perform a shim adjustment to increase a uniformity of a static magnetic field of the sample based on the reference frequency.
3 more elements
A method of identifying a solvent, the method comprising:
- acquiring, from a nucleus of interest in a solvent included in a sample solution, an NMR spectrum comprising a characteristic portion intrinsic to the nucleus of interest;
- analyzing the characteristic portion, to thereby identify splitting information for a particular nucleus-of-interest signal included in the characteristic portion, wherein the splitting information comprises a number of splits and a splitting interval;
- identifying the solvent based on the number of splits and the splitting interval;
- identifying a reference frequency based on the solvent;
- and
- controlling an NMR measurement apparatus to perform a shim adjustment to increase a uniformity of a static magnetic field of the sample solution based on the reference frequency.
3 more elements
Dependencies are inferred from the claim text.