TIME-OF-FLIGHT MASS SPECTROMETER AND TIME-OF-FLIGHT MASS SPECTROMETRY

• Main Authors: OSHIRO, Tomoyuki, MIYAZAKI, Yuta
• Format: Patent
• Language: English; French; German
• Published: 17.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

A mode of TOFMS according to the present invention includes flight space formation electrodes (11, 12) configured to form a flight space for separating ions derived from a component contained in a sample according to a m/z, an ion detection unit (13) configured to detect ions that have flown in the flight space, voltage switching units (4, 2) configured to switch a voltage to be applied to the flight space formation electrode from a first voltage for flying ions of a first polarity to a second voltage for flying ions of a second polarity at a given switching timing, ion information acquisition units (30, 32) configured to obtain a time of flight during which the ions fly in the flight space or a m/z of the ions based on a detection result of the ions of the second polarity obtained by the ion detection unit after the voltage has been switched by the voltage switching unit, a correction information storage unit (31) configured to store correction information related to a deviation in time of flight or a m/z associated with an elapsed time from the switching timing, and a correction unit (33) configured to correct the flight time or the m/z obtained by the ion information acquisition unit according to an elapsed time from the switching timing when the detection result of the ion is obtained using the correction information stored in the correction information storage unit.