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    LASER DESORPTION/IONIZATION MASS SPECTROMETER AND LASER POWER ADJUSTMENT METHOD
    3.
    发明申请
    LASER DESORPTION/IONIZATION MASS SPECTROMETER AND LASER POWER ADJUSTMENT METHOD 有权

    公开(公告)号：US20230132727A1

    公开(公告)日：2023-05-04

    申请号：US17918648

    申请日：2020-11-26

    Applicant: SHIMADZU CORPORATION

    Inventor： Akihito KORENAGA ,  Ritsuko YODA ,  Tatsuki OKUBO ,  Tomonori OSHIKAWA ,  Yuko KOBAYASHI ,  Yoshiki TAINAKA ,  Kohei SUZUKI

    IPC: H01J49/16 ,  H01J49/00 ,  H01J49/04

    Abstract: One mode of the present invention provides a laser power adjustment method for ionization in a laser desorption/ionization mass spectrometer, the laser power adjustment method including: a measurement step (S1) in which intensity information on ions derived from a specific component in a specimen are acquired while changing laser power in n stages (n is 3 or more) for the identical specimen; and a processing step (S2, S6, and S7) in which a slope of a straight line connecting two adjacent plot points on a laser power axis is calculated in a two-axis graph in which a relationship between n ionic intensities obtained by the measurement step or a signal value, which is an SN ratio obtained from the ionic intensities, and laser power is plotted; an index value reflecting a ratio between a forward slope value, which is a slope of a straight line on a front side of the plot point, and a backward slope value, which is a slope of a straight line on a rear side, is obtained for each plot point; and appropriate laser power is selected using the index value.

    ANALYTICAL OPERATION ASSISTING DEVICE AND NON-TRANSITORY COMPUTER READABLE MEDIUM RECORDING ANALYTICAL OPERATION ASSISTING PROGRAM
    4.
    发明申请
    ANALYTICAL OPERATION ASSISTING DEVICE AND NON-TRANSITORY COMPUTER READABLE MEDIUM RECORDING ANALYTICAL OPERATION ASSISTING PROGRAM 有权

    公开(公告)号：US20220065884A1

    公开(公告)日：2022-03-03

    申请号：US17376776

    申请日：2021-07-15

    Applicant: SHIMADZU CORPORATION

    Inventor： Tomonori OSHIKAWA ,  Yuko KOBAYASHI ,  Yoshiki TAINAKA ,  Tatsuki OKUBO ,  Kohei SUZUKI

    IPC: G01N35/00 ,  H01J49/16 ,  H01J49/40 ,  G01N33/49

    Abstract: In a device (4) for assisting in analytical operations for correctly arranging samples in a plurality of sample-placement portions and implementing multiple protocols in the correct order, a storage section (41) holds sample information and analysis parameters for each protocol as well as the order of implementation. A protocol-selection-input receiver (42) receives an input of the selection of a protocol. A sample-position displayer (43) displays, on a display unit (6), sample information in the selected protocol along with the positions of the sample-placement portions. A protocol-implementation-information collector (45) collects information concerning the state of implementation of the protocols. A determiner (46) determines whether a protocol which must be implemented earlier was already implemented, based on the state of implementation and order of implementation of the protocols. A batch-file creator (47) creates a batch file when it is confirmed that the protocol which must be implemented earlier was already implemented.

    IMAGING MASS SPECTROMETRY DATA PROCESSING DEVICE
    5.
    发明申请
    IMAGING MASS SPECTROMETRY DATA PROCESSING DEVICE 有权

    公开(公告)号：US20210217597A1

    公开(公告)日：2021-07-15

    申请号：US17054833

    申请日：2018-05-30

    Applicant: SHIMADZU CORPORATION

    Inventor： Tomonori OSHIKAWA

    IPC: H01J49/00 ,  G01N27/62

    Abstract: After collecting mass spectrometry data for each of a large number of measurement points in the two-dimensional region on the sample with the imaging mass spectrometry unit, the user inputs the target compound whose two-dimensional distribution is desired to be observed from the input unit. The image display instruction reception unit obtains the m/z range for data integration from the precise m/z value and the allowable width of m/z for each target compound. The mass-to-charge ratio range overlap determination unit determines the presence or absence of overlap between the m/z ranges of a plurality of compounds, and if there is an overlap, the overlap determination result processing unit creates and displays on the screen of the display unit a list of compounds whose m/z ranges overlap, for example. This urges the user to review the compounds and allowable values.

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