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Aerosol mass spectrometer for measuring chemical components of nanoparticles

A technology of nanoparticles and particles, which is applied in the parts of particle separator tubes, nanotechnology, particle separation tubes, etc., can solve the problems of low sampling efficiency, slow time response in the detection process, and the inability to detect molecular information of nanoparticles, etc., to achieve The effect of fast and high-efficiency transmission and simple detection process

Active Publication Date: 2018-04-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The purpose of the present invention is to provide an aerosol mass spectrometry system for measuring the chemical composition of nanoparticles, which is used to solve the problem of low sampling efficiency and the inability to detect nanoparticles in existing instruments for detecting the chemical composition of nanoparticles with smaller particle sizes. Molecular information, defects with slow time response in the detection process

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  • Aerosol mass spectrometer for measuring chemical components of nanoparticles

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in more detail below. These embodiments are provided for a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0023] "Includes" or "comprises" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". The subsequent description in the specification is a preferred implementation mode for implementing the present invention, but the description is for the purpose of the general principles of the specification, and is not intended to limit the scope of the present invention. The scope of protection of the present invention should be defined by the appended claims.

[0024] Such as figure 1 As shown, the aerosol mass spectrometry system for measuring the chemical composition of nanoparticles of the present invention includes a nanoscanning electric mobi...

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Abstract

The invention discloses an aerosol mass spectrometer for measuring chemical components of nanoparticles. The aerosol mass spectrometer comprises a nano-scan electromobility particle size spectrometer,a first differential chamber, a second differential chamber, a photo ionization chamber and a reflective type time-of-flight mass spectrum apparatus, wherein the aerosol outlet of the nano-scan electromobility particle size spectrometer is connected with the inlet of the first differential chamber; the outlet of the first differential chamber is connected with the inlet of the second differentialchamber; the outlet of the second differential chamber is connected with the inlet of the photo ionization chamber; and the outlet of the photo ionization chamber is connected with the reflective type time-of-flight mass spectrum apparatus. By virtue of the nano-scan electromobility particle size spectrometer, charge, particle size selection and particle spectrum analysis of the nanoparticles arerealized by the aerosol mass spectrometer, so as to perform real-time and online measurement and acquisition of the chemical component information of the nanoparticles with particle sizes of smallerthan 60nm; and the detection process is simple, and quick and high-efficiency transmission of the nanoparticles are realized.

Description

technical field [0001] The invention relates to the technical field of atmospheric aerosol detection devices, in particular to an aerosol mass spectrometer for measuring chemical components of nanoparticles. Background technique [0002] At present, aerosol particles are an important component of air pollutants. The number density of nanoparticles in the atmosphere is very high, and its proportion can account for more than 80% of the total number of particles. Nanoparticles (especially new atmospheric particles) are an important source of aerosol particles in the atmosphere. Nanoparticles can grow further in the atmosphere, absorb and scatter sunlight, reduce the visibility of the atmosphere, form smog, affect air quality and global climate, etc.; moreover, due to the large specific surface area of ​​nanoparticles, there are many harmful substances adsorbed, It is easier to deposit into the human respiratory and cardiovascular system, endangering people's health. Real-time...

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Application Information

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IPC IPC(8): H01J49/00H01J49/04B82Y35/00
Inventor 唐小锋温作赢郭晓天顾学军张为俊
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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