Device and method for detecting the concentration of microplastics in the air

Abstract

A device for detecting the concentration of microplastics in the air, including a glass ultrapure water tank, a glass gas scrubber, a glass filtration device, and an air pump; the glass ultrapure water tank and the glass gas scrubber are connected through a glass tube. A first valve is installed on the glass tube between the glass ultrapure water tank and the glass gas scrubber; the lower part of the glass gas scrubber and the upper part of the glass filter device are connected through the glass tube, and the glass gas scrubber is connected to the glass tube. A second valve is installed on the glass tube between the glass filter device and the glass filter device; the glass gas scrubber, glass filter device, and air suction pump are connected through the same glass tube, and a gas flow rate is installed on the glass tube connected to the glass gas scrubber device. According to the design, a third valve and a fourth valve are installed near the junction of the three connected glass tubes. The concentration of microplastics in the collected air can be detected by calculating the volume of air extracted by using an air pump and counting the number of microplastics under a microscope.

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 5 mm. 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 ed...

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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