Aerosol Particle Sorting System and Method

Abstract

The invention discloses an aerosol particle sorting system and method, comprising: a driving device for injecting an auxiliary gas and an aerosol sample into a screening device at a set speed ratio; a screening device for aerosol sample Sorting; wherein, the screening device includes: a microfluidic chip with at least two intersecting channels for shunting the injected aerosol samples; a chip holder for clamping the microfluidic chip; a collection cavity, located below the microfluidic chip, for collecting particles in the aerosol sample; injecting the aerosol sample and auxiliary gas through the driving device, driving the aerosol sample to pass through the aerosol sample one by one in the form of single particles The first channel in the microfluidic chip enters the collection chamber. The invention can realize the particle sorting requirements of one or more types of aerosol particles, greatly improve the sorting efficiency, improve the sorting precision, reduce the complexity of equipment, and simplify the operation process.

Description

technical field [0001] The invention relates to the technical field of aerosol particle sorting, in particular to an aerosol particle sorting system and method. Background technique [0002] Aerosols, such as smoke, PM2.5 (Particulate Matter2.5, particles with a particle size less than or equal to 2.5 microns in the air), etc., often require complex procedures when analyzing the particles in the colloid. Particles are not easy to capture, so it is difficult to accurately obtain the characteristics of individual particles. At this time, a convenient and efficient method for sorting the same type or multiple particles in the aerosol is needed to separate and capture individual particles. This process is called aerosol particles. sorting. [0003] At present, the aerosol particle separation methods used include sieving, sedimentation, electrophoresis (DEP, Dielectrophoresis), etc. However, the above-mentioned separation methods are not suitable for all micro-nano particles due...

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Problems solved by technology

[0002] Aerosols, such as smoke, PM2.5 (Particulate Matter2.5, particles with a particle size less than or equal to 2.5 microns in the air), etc., often require complex procedures when analyzing the particles in the colloid. Particles are not easy to capture, so it is difficult to accurately obtain the characteristics of individual particles. At this time, a convenient and efficient method for sorting the same type or multiple particles in the aerosol is needed to separate and capture individual particles. This process is called aerosol particles. sorting

[0003] At present, the aerosol particle separation methods used include sieving, sedimentation, electrophoresis (DEP, Dielectrophoresis), etc. However, the above-mentioned separation methods are not suitable for all micro-nano particles due to the complexity of the instruments used and the high price. Particles and other shortcomings cannot be well sorted and captured, and it is easy to cause unnecessary sample waste. As micro-nano particles play an increasingly important role in various fields, it is necessary to accurately and efficiently collect particles in aerosols. Sorting becomes an urgent problem to be solved

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