Single-particle aerosol online ionization source and realization method thereof

An aerosol, single particle technology, applied in the parts of the particle separator tube, ion source/gun, individual particle analysis, etc., can solve the problem of low aerosol detection efficiency, low mass resolution of time-of-flight mass analyzer, transmission Long distance and other problems, to achieve the effect of improving transmission efficiency and ionization hit rate, reducing drift distance, and improving quality resolution
CN1838370AActive Publication Date: 2006-09-27KUSN HEXIN MASS PECTRUM TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUSN HEXIN MASS PECTRUM TECH
Publication Date
2006-09-27

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Abstract

This invention provides a article aerosol on-line ionization power, which is arranged outside the speeding area of the flying time quality analysis device, which includes ionization laser, low pressure radio frequency four poles, and the laser beam sent from the ionization laser is eradiated into the incenter of the low pressure radio frequency four poles vertically. The ionization power applying method has the following steps: measuring diameter of the single grain aerosol by aerodynamics, then before the flight time quality analyzer enters, iorizating the single grain into plasma, and the positive-negtive ions produced is focalized into ion beam which has very little spcace and then is sent into the flight time quality analyzer. And this invenktion also combining the ionization zone with the aerodynamics diameter measuring zone together, when diameter measuring is done, aerosol inoizates, which reduces the excursion distance of the aerosol, an improves transmission efficient greatly;and low-voltage radio-frequency quadrupole pole's concentrating effect improves the differentiate rate of the flight time quality analyzer.
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Description

technical field

[0001] The invention relates to an on-line measurement technology of aerosol particles, in particular to an on-line ionization source of a single-particle aerosol and a realization method thereof. Background technique

[0002] The size and chemical composition of aerosols have a major impact on global climate, air quality, and ecological health. Single-particle aerosol online monitoring time-of-flight mass spectrometer (Aerosol Time-of-flightMass Spectrometer, ATOFMS) is a new technology developed in recent years, which can monitor the aerodynamic diameter of single-particle aerosol and its atmospheric pollution components online in real time. An important means to determine the formation and source of aerosols. The basic principle is to measure the diameter of aerosols by aerodynamic methods, and then ionize the aerosols. The ionized ions are detected by a mass spectrometer. For the specific aerodynamic method for measuring aerosol p...

Claims

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