Method and system for measuring coagulation efficiency of submicron particulate matter on plant leaves as well as medium

Abstract

The invention provides a method and a system for measuring coagulation efficiency of submicron particulate matter on plant leaves as well as a medium. The method comprises steps as follows: a particulate matter preparation step: submicron particulate matter is prepared to simulate atmospheric particulate matter with the size marked as D0; a dust retention simulation step: a plant leaf sample is pretreated and then put in a smog chamber connected with an aerosol generator, certain submicron particulate matter concentration conditions are kept, and the sample is subjected to dust retention and adsorption for a preset time. Compared with methods for measuring the sizes of particulate matter on the leaves, the method has the advantages that the defects of small view range, inseparable propertyof water-soluble ingredients and the like can be overcome by use of an X ray microscope, high-accuracy 3D imaging in a larger view can be realized, data of each particulate matter in all structures of the obtained leaves can be accurately obtained in combination of software, observation is more direct, and particulate size calculation is more scientific and reliable.

Description

technical field [0001] The invention relates to the field of physical properties of plant surfaces, in particular to a method, system and medium for measuring coagulation efficiency of submicron particles on plant leaves. In particular, it relates to a method for measuring the particle size of submicron particles on plant leaves by using an X-ray microscope, and then calculating the agglomeration efficiency of the particles on the leaves. Background technique [0002] In recent years, with the rapid development of urbanization, the problem of air pollution has become increasingly prominent, and aerosol particles in the atmosphere have become the primary pollutants for pollution prevention and control. Among them, particles with a particle size range of 0.1-1 μm are also called submicron particles, which neither diffuse as easily as ultrafine particles with smaller particle sizes, nor have greater gravity like micron-sized particles with larger particle sizes Settling veloci...

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Problems solved by technology

However, the scanning electron microscope can only observe the particles on the surface of the leaves, and the result will be random due to the small field of view, and the operability and large error of manual counting are not strong

Water washing-different pore size membrane filtration method also has defects such as retention of small particles after the membrane is saturated, and inability to separate water-soluble components.

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