Device and method for detecting concentration of micro plastics in air

Abstract

The invention relates to a device for detecting concentration of micro plastics in the air. The device comprises an ultrapure water glass tank, a glass gas washing device, a glass filtering device and an air pump, wherein the ultrapure water glass tank and the glass gas washing device are communicated and connected by virtue of a glass tube, and a first valve is arranged on the glass tube between the ultrapure water glass tank and the glass gas washing device; the lower part of the glass gas washing device is communicated and connected with the upper part of the glass filtering device by virtue of a glass tube, and a second valve is arranged on the glass tube between the glass gas washing device and the glass filtering device; and the glass gas washing device, the glass filtering device and the air pump are communicated and connected by virtue of a glass tube, a gas flowmeter is arranged on the glass tube connected with the glass gas washing device, and a third valve and a fourth valve are arranged at a position closed to junction of the three glass tubes which are communicated and connected. A method of pumping the air by virtue of the air pump is adopted for calculating volume of pumped air, micro plastics are counted under the microscope, and the concentration of the micro plastics in the air is namely detected.

Description

technical field [0001] The invention relates to the field of environmental purification treatment, in particular to a device for detecting the concentration of microplastics in the air. Background technique [0002] The term microplastics was first introduced by Thompson et al. in a research paper on plastic debris in marine water bodies and sediments published in Science in 2004. Although researchers give different definitions to microplastics based on the size of plastic individuals, microplastics are more defined as: plastic particles with a diameter of less than 5mm. Due to the global and extensive characteristics of microplastic pollution, a large number of researches on new marine pollutants—microplastics have been carried out from abroad and domestically in recent years. This issue has attracted the attention of governments, media and researchers from various countries. [0003] Yang et al.2015 found that table salt also contains microplastic particles in Chinese edi...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of detection methods specifically for the concentration of such microplastic particles in the air.

[0004] The problem of microplastic pollution is a global pollution problem. It is widely distributed in the air and its concentration is small. At present, my country still lacks effective concentration detection devices.

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