Electrostatic classification method and device for atmospheric particle mixture

Abstract

The invention discloses an electrostatic classification method and device for an atmospheric particle mixture. Atmospheric particulates are placed in a liquid medium with certain viscosity, so that under the action of electrostatic field force, the moving rates of the particulates with different electromobility are different, and thereby the various particulates are rapidly separated in unit time,whereas the particulates with the same electromobility are enriched, so that electrostatic electrophoretic screening of the atmospheric particulates is realized. The method can be widely applied to separation and classification of particles (including bacteria, fungi, pollen, viruses and the like) in the atmospheric environment, separation and purification of samples, particle size distribution of atmospheric particles, separation and extraction of particles with different particle sizes, separation and purification of different protein molecules, chemical molecules and the like; the method is of great significance to research of distribution, sources, toxicity and the like of atmospheric particulates.

Description

technical field [0001] The present invention relates to the classification and separation technology of atmospheric particle mixture, in particular to an electrostatic classification method and device for realizing fast separation of atmospheric particle mixture according to the different electric mobility of different particles in liquid medium. Background technique [0002] Air pollution has become the primary environmental problem in the world today, especially the pollution of atmospheric particulate matter. Exposure to particulate matter is reported to cause millions of premature deaths each year. The composition of atmospheric particulate matter is very complex, including biological and chemical components, such as biological particles such as bacteria, fungi, viruses, and pollen, and non-biological particles such as sulfate, nitrate, and ammonium salt. Among the many particulate matter components, there are many particulate matter that are harmful to the human body, ...

AI Technical Summary

Problems solved by technology

At the same time, there are also studies combining DMA and filter membranes for filter membrane collection of particulate matter classified according to DMA. However, due to the relatively small charge of the particulate matter, the collection flow rate is greatly restricted, and the amount of collected particulate matter is very limited, which affects the follow-up. particle detection and analysis

In addition, the classification of particulate matter in the atmosphere by these instruments and equipment is also very limited, and the classification of some small molecules is greatly challenged

Images