Fine Dust and Ultrafine Dust: Differences, Health Effects, and Prevention
Air pollution is often invisible, but it can have a significant effect on everyday health. Among the pollutants commonly discussed are fine dust and ultrafine dust, which are generally classified according to the size of the particles suspended in the air. The terms PM10 and PM2.5 are frequently used in weather forecasts and air-quality reports. PM stands for particulate matter, a mixture of microscopic solid particles and liquid droplets found in the atmosphere. These particles may include dust, smoke, soot, metals, organic chemicals, sulfates, nitrates, and other substances. Although PM10 and PM2.5 may appear similar, their size, sources, and ability to enter the human body are different. Understanding these differences can help people respond appropriately when air quality becomes poor.