Ionic migration spectrometry-flight time mass spectrometer

A technology of time-of-flight mass spectrometry and ion mobility spectrometry, which is applied in the field of mass spectrometry analysis instruments, can solve problems affecting ion utilization efficiency, achieve the effects of improving ion utilization efficiency and instrument detection sensitivity, shortening acquisition time, and improving analysis speed

Active Publication Date: 2020-06-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Benefits of technology

This patented device improves upon existing methods for analyzing both polarized gases (I) or charged particles (II). By combining different techniques together it can achieve better results than just simply measuring one type of particle alone.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance and accuracy of analyzing both positive and negative charges within specific atomic species called metals or compounds due to its unique properties like size, shape, charge density, and velocity dispersion characteristics. Current methods require expensive equipment and take several hours to analyze each component separately, making accurate identification challenged even more quickly than current techniques.

Method used

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  • Ionic migration spectrometry-flight time mass spectrometer
  • Ionic migration spectrometry-flight time mass spectrometer
  • Ionic migration spectrometry-flight time mass spectrometer

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Embodiment 1

[0042] One of the time-of-flight mass analyzers of the present invention is an ion mobility spectrometer-time-of-flight mass spectrometer with a linear structure, see figure 2 shown. The microchannel plate detector and the acceleration zone are respectively arranged on two sides of the field-free flight zone away from each other. The time delay Dt of the pulse signal rising edge of the pulse voltage Ucard relative to the pulse signal falling edge of the pulse voltage Ugate is 50μs; The rising edge of the first synchronous pulse signal of the pulse voltage Upulse is delayed Dt by 50 μs relative to the falling edge of the pulse signal of the pulse voltage Ugate. The pulse signal period Tg of the pulse voltage Ugate is 10 milliseconds, and the pulse width Wg is 200 microseconds; the pulse signal period Tp of the pulse voltage Upulse is 30 microseconds, and the pulse width Wp is 5 microseconds; the pulse signal period Tc of the pulse voltage Ucard is 10 milliseconds, the pulse ...

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Abstract

The invention relates to a mass spectrometry instrument, in particular to an ionic migration spectrometry-flight time mass spectrometer, and the mass spectrometer comprises an ionic migration spectrometry cavity, a mass spectrometry transmission area cavity, a mass analyzer cavity and a data acquisition card; an ionization source, an ion gate and an ion migration region electrode are sequentiallyarranged in the ionic migration spectrometry cavity from top to bottom; a repulsion polar plate, a flight time mass analyzer and a micro-channel plate detector are arranged in the mass analyzer cavity; pulse voltages Ugate, Upulse and Ucard are respectively applied to acquisition trigger terminals of the ion gate, the repulsion polar plate and the acquisition card; and the pulse voltage Upse and the pulse voltage Ucard are synchronized based on the rising edge or falling edge moment of the pulse signal of the pulse voltage Ugate. The ionic migration spectrometry-flight time mass spectrometer can effectively improve the utilization efficiency of ions, the two-dimensional analysis speed of ionic migration spectrometry-mass spectrometry and the detection sensitivity by synchronizing and modulating the pulse time sequences of the ion gate, the repulsion polar plate and the acquisition card.

Description

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Claims

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Application Information

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Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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