# US 12,002,670 B2 · Chromatograph mass spectrometer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,002,670 B2 - Document ID: US12002670B2 - Status: Granted - Kind: B2 - Application number: 17/597,046 - Filed: 2019-07-04 - Published: 2022-08-04 - Granted: 2024-06-04 - Earliest claimed: 2019-07-04 - Assignees: Shimadzu Corporation - Applicants: Shimadzu Corporation - Inventors: Kazuma Maeda - Web page: https://patentgrep.com/patent/US12002670B2 ## CPC - H01J 49/0027: {Methods for using particle spectrometers} - H01J 49/0431: {for liquid samples (interfaces to liquid chromatographs G01N30/7233)} - G01N 27/62: by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode - G01N 30/72: Mass spectrometers {(mass spectrometers per se H01J49/00)} - G01N 30/7266: {by electric field, e.g. electrospray} - H01J 49/0036: {Step by step routines describing the handling of the data generated during a measurement} - H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H) - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A chromatograph mass spectrometer includes: a chromatograph unit configured to separate components in a sample; a mass spectrometer configured to perform measurement on ions having a specific mass-to-charge ratio derived from each compound temporally separated by the chromatograph unit, an analysis condition setting unit configured to allow a user to set, as an analysis condition, molecular-weight-related information and a mass-spectrometry-related parameter including an ion polarity, a type of an adduct, a number of polymerizations of a multimer and/or an ion valence for each measurement target compound; and an analysis method creator configured to calculate a mass-to-charge ratio of one or a plurality of types of ions according to the analysis condition set by the analysis condition setting unit for the each measurement target compound, and create an analysis method for performing mass spectrometry on the one or a plurality of types of ions in a time division manner. ## Claims ### Claim 1 A chromatograph mass spectrometer comprising: a chromatograph unit configured to separate components in a sample; and a mass spectrometer configured to perform measurement on ions having a specific mass-to-charge ratio derived from each compound temporally separated by the chromatograph unit, the chromatograph mass spectrometer further comprising: an analysis condition setting unit configured to allow a user to set, as an analysis condition, molecular-weight-related information and a mass-spectrometry-related parameter including a type of an adduct and/or a number of polymerizations of a multimer for each measurement target compound; and an analysis method creator configured to calculate a mass-to-charge ratio of one or a plurality of types of ions of a measurement target compound to which the adduct is added and/or polymerized, according to the type of the adduct and/or the number of polymerizations of the multimer set by the analysis condition setting unit for the each measurement target compounds, based on the molecular-weight-related information and the mass-spectrometry-related parameter including an ion polarity and an ion valence, and create an analysis method for performing mass spectrometry on the one or a plurality of types of ions in a time division manner. ### Claim 2 (depends on 1) The chromatograph mass spectrometer according to claim 1, wherein the analysis condition setting unit includes a display processor configured to display, on a screen of a display unit, a table in which the molecular-weight-related information and the mass-spectrometry-related parameter for one measurement target compound are associated in a row or in a column, and an input receiver configured to receive information input or selected in the table. ### Claim 3 (depends on 1) The chromatograph mass spectrometer according to claim 1, wherein the analysis condition setting unit includes a display processor configured to display, on a screen of a display unit, a dialog box for inputting or selecting, for each measurement target compound, the molecular-weight-related information and the mass-spectrometry-related parameter for one measurement target compound, and an input receiver configured to receive information input or selected in the dialog box. ### Claim 4 (depends on 1) The chromatograph mass spectrometer according to claim 1, wherein the molecular-weight-related information is a chemical formula or a molecular formula, and the chromatograph mass spectrometer further includes a molecular weight calculator configured to calculate a molecular weight from a chemical formula or a molecular formula input by the analysis condition setting unit, and the analysis method creator is configured to create the analysis method after calculating the mass-to-charge ratio of one or a plurality of types of ions based on the molecular weight calculated by the molecular weight calculator. ### Claim 5 (depends on 1) The chromatograph mass spectrometer according to claim 1, wherein the analysis condition setting unit is configured to allow the user to further set measurement time information as the analysis condition for each measurement target compound, and the analysis method creator is configured to create an analysis method for each measurement target compound so as to perform, in a time division manner, mass spectrometry on the one or a plurality of types of ions corresponding to the measurement target compound within a measurement time range based on the measurement time information. ### Claim 6 (depends on 1) The chromatograph mass spectrometer according to claim 1, wherein the mass spectrometer is a quadrupole mass spectrometer, and the mass spectrometry on the one or a plurality of types of ions is a selected ion monitoring measurement.