Dust-Concentration Measurement Based on Mie Scattering (CAT#: STEM-ST-0073-YJL)

Introduction

With the rapid development of China's economy, the rapid expansion of cities, and the accelerated process of urbanization, air pollution is becoming increasingly serious, and the deterioration of visibility caused by aerosol particles has increased. In recent years, continuous fog and haze have become common environmental pollutants in the Beijing and Tianjin areas. Haze affects people's physical and mental health. Moreover, solar radiation is reduced, causing a reduction in crop production. This haze also causes traffic accidents. Dust (a suspension in which the particle diameter is not greater than 75 μm) is an important source of pollution that has seriously polluted the atmospheric environment and impacts human health. In urban areas of China, PM2.5 and PM10 accounted for the largest proportion of air pollution, showing that the main factor affecting the air quality of large cities in China is particulate matter. Therefore, accurate monitoring and control of atmospheric airborne particles has become an urgent scientific research area.