Planar differential electromobility analyzer-mass spectrometry combined system and analysis method
A technology of electric mobility and plane difference, which is applied in the direction of material analysis, analysis materials, instruments, etc. through electromagnetic means, can solve the problem of inability to ionize molecules, clusters, aerosols, inapplicability, and ion transmission efficiency of electric mobility sieves low resolution issues
Active Publication Date: 2021-10-08
ZHEJIANG UNIV
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[0004] Among the published invention patents in my country, the patent with the authorized announcement number CN201410166017 involves a 1-3 nanometer monodisperse aerosol generating system. Ionization of molecules, clusters, aerosols prepared in chamber
The patent with the authorized announcement number CN2016100654692 relates to a 1-3 nanometer aerosol screening device based on electric mobility, which can be used for field observation and selective screening of 1-3 nanometer aerosols produced in the laboratory. The differential electric mobility analyzer is a cylindrical differential electric mobility analyzer, the ion transmission efficiency and electric mobility screening resolution are low, it is difficult to use it in series with the mass spectrometer
The instrument systems designed by the above two patents are all focused on sieving and counting aerosols, and are not suitable for use with mass spectrometry
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[0027] The invention provides a planar differential electric mobility analyzer-mass spectrometry system and analysis system, which can be used in high-efficiency combination with mass spectrometry on the basis of high-resolution selective screening and counting of ion electric mobility to realize ion Real-time simultaneous measurement of electrical mobility and mass-to-charge ratio. The technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention.
[0028] figure 1 It is a schematic diagram of a planar differential electric mobility analyzer-mass spectrometry system, mainly composed of an electrospray system 1, a miniature ionizatio...
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The invention provides a planar differential electromobility analyzer-mass spectrometry combined system and an analysis method. The planar differential electromobility analyzer-mass spectrometry combined system comprises an electrospray system, a miniature ionization reaction chamber, a planar differential electromobility analyzer, a sheath gas circulation system, an ion transmission interface, an aerosol electrometer and a control system; the electrospray system, the miniature ionization reaction chamber and the planar differential electromobility analyzer are sequentially connected, the sheath gas circulation system is connected with the planar differential electromobility analyzer, and the control system is connected with the sheath gas circulation system, the electrospray system and the planar differential electromobility analyzer; and data are collected, positive / negative high voltage is provided for the electrospray system and the planar differential electromobility analyzer, and the planar differential electromobility analyzer is connected with the aerosol electrometer and a mass spectrometry instrument through an ion transmission interface, so that series use is realized. According to the invention, efficient electromobility screening and counting of ionized molecules / clusters and efficient combination with mass spectrometry can be realized.
Description
technical field [0001] The invention belongs to the technical field of aerosol measurement, and in particular relates to a planar differential electric mobility analyzer-mass spectrometry system and an analysis method. Background technique [0002] Ion Mobility Spectrometry (IMS) is a technique for separating and analyzing substances based on the difference in ion mobility of different charged ions in an electric field. IMS can be coupled with a mass spectrometer (MS) to accurately distinguish isomers with different structures and realize rapid analysis of complex mixtures. Ion mobility spectrometry-mass spectrometry (IMS-MS) has a wide range of applications in the fields of pharmaceuticals, industry, environmental research, food safety, and quality control. According to its working principle, IMS-MS is divided into time-dispersed type, ion-confined selective release system and space-dispersed type. The vast majority of IMS-MS based on the first two principles require spec...
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Login to View More IPC IPC(8): G01N27/623G01N27/624
CPCG01N27/623G01N27/624
Inventor 王志彬徐正宁裴祥宇高健邝斌宇徐庄浩
Owner ZHEJIANG UNIV