An online monitoring and analysis device for atmospheric aerosols

Abstract

The invention discloses an on-line monitoring and analysis device for atmospheric aerosol, comprising a lower swivel ring, blades and an analysis component, wherein the upper circumference of the lower swivel ring is evenly and rotatably connected with a plurality of blades, and the blades are arc-shaped The arc-shaped tile-shaped blades can be rotated to seal with the adjacent blades to form a cylindrical body together; the upper part of the blades is rotatably connected to the same upper turntable, and the upper turntable is provided with an adjustable blade rotation A main shaft is fixed at the center of the upper turntable, and the main shaft penetrates the lower swivel ring to the lower part; the lower part of the lower swivel ring is connected with the collection bucket through and rotatably, and the analysis component is fixed under the collection bucket , a negative pressure pump is arranged below the analysis component. Compared with the prior art, the present invention has stable air flow velocity inside, can select and analyze the type, shape and concentration of aerosol in the air, can analyze air quality data in all directions, and has high detection efficiency.

Description

technical field [0001] The invention relates to the technical field of air analysis, in particular to an on-line monitoring and analysis device for atmospheric aerosols. Background technique [0002] Atmospheric aerosols refer to liquid or solid particles suspended in the atmosphere, mainly including 7 types of aerosol particles in six categories: dust aerosols, carbon aerosols (black carbon and organic carbon aerosols), sulfate aerosols, Nitrate aerosol, ammonium salt aerosol and sea salt aerosol. It is a pollutant with huge quantity, complex composition, diverse nature and the most harmful pollutants in the urban atmosphere. It has important impacts on the climate system, the environment and human health. At present, atmospheric aerosol research has become one of the hotspots in atmospheric chemistry and even the earth environmental science. [0003] In the prior art, for aerosol collection and chemical composition analysis in the atmosphere, the traditional analysis me...

AI Technical Summary

Problems solved by technology

However, due to the influence of unstable air velocity in the environment, the accuracy of the existing aerosol online monitoring equipment is low, errors are prone to occur, and the monitoring method is single, which can only have a simple early warning effect and cannot be further analyzed.

Therefore, the existing aerosol observations cannot monitor the morphology and aggregation characteristics of aerosol particles online

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