Ultrasonic wave method filter membrane attached particulate matter re-flying method and device

Abstract

The invention relates to an ultrasonic wave method filter membrane attached particulate matter re-flying method and device, and is applicable to the technical field of atmosphere particulate matter sampling and test. The device mainly comprises a liquid storage groove, a filter membrane clamp, a cleaning groove, a flow rate meter, a heating sheet, an atomization groove, a vibrator and an atomization sheet. Firstly, particulate matters attached onto a filter membrane soaked into the cleaning liquid are subjected to peeling, stirring and scattering through ultrasonic wave high-frequency oscillation; then, the ultrasonic wave spring fogging effect is used for changing the cleaning liquid with the particulate matters into liquid mist with the particulate matters; then, the heating sheet is used for vaporizing the liquid mist containing the particulate matters; finally, suspension and flying of the particulate matters can be realized. The method and the device have the advantages that the principle is simple; the operation is convenient; the re-flying of the particulate matters attached on the filter membrane can be fast and efficiently realized; the physical and chemical properties of the particulate matters cannot be influenced; the device can be directly connected into a particulate matter test instrument.

Description

Technical field [0001] The invention relates to the sampling and testing of atmospheric particulate matter, and is particularly suitable for testing the particulate matter attached to the filter membrane to fly again. Background technique [0002] The pollution of atmospheric particulate matter in our country is serious, especially the fine particulate matter such as PM2.5 and PM10 generally exceeds the standard. Air quality, atmospheric visibility and human health are greatly affected and threatened. Accurate analysis and testing of the physical and chemical properties of particulate matter is an important scientific prerequisite for the targeted formulation of relevant standards, policies and regulations, and control measures. [0003] Direct field testing of atmospheric particulate matter can accurately and timely reflect the state of the atmospheric environment. With the development of testing technology, large-scale laboratory precision instruments have emerged. Compared with...

AI Technical Summary

Problems solved by technology

However, since particles are often embedded in the pores of the filter membrane, this simple mechanical stripping is inefficient, especially for fine particles that are invisible to the naked eye and easily suspended, and the operation is particularly difficult

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