Transmission Electron Microscope Study on the Physical and Chemical Characteristics of Atmospheric Particulate Matter PM1.0 in Heavily Polluted Weather

  • Yingshi Song, Yu Tao

Abstract

With the continuous intensification of human activities, atmospheric particulate matter in the air is increasing, causing serious harm to health and ecological environment. Atmospheric particulate matter has attracted increasing attention. Atmospheric particulate matter (PM) is one of the most important pollutants in air pollution. It is of great importance and necessity to study PM because of its wide source, complex composition, huge quantity, diverse nature and great harm. Because PM1.0 particle size is small, can enter the human body directly, the harm to health is more serious. In recent years, with the continuous progress of science and technology, the equipment of high resolution microscope has been constantly updated. The single particle analysis technology based on transmission electron microscope and X-ray energy spectrum analysis has been widely applied, playing an increasingly important role in the study of atmospheric particles. In this paper, transmission electron microscope and X-ray energy spectrometer were used to study the physical and chemical characteristics of atmospheric particulate matter PM1.0 under severe pollution weather, and the structural information, particle size and chemical composition of PM1.0 were obtained. The analysis data showed that there was a strong correlation between the particle morphology of atmospheric particulate matter PM 1.0 and element composition and particle formation process.

Published
2019-06-21