2025年5月30日 · PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, …

Particulate matter (PM) or particulates[a] are microscopic particles of solid or liquid matter suspended in the air. An aerosol is a mixture of particulates and air, as opposed to the particulate matter alone, …

Particulate matter is a type of air pollution that consists of airborne suspensions of extremely small solid or liquid particles, such as soot, dust, smokes, fumes, and mists.

2025年11月13日 · Satellite data indicate that PM 2.5 levels have decreased by about 30% over the Eastern U.S. from 1998 to 2012 (Boys et al., 2014) because of emission control measures, but …

PARTICULATE definition: 1. an extremely small piece of dirt, especially one produced by road vehicles, that causes…. Learn more.

The meaning of PARTICULATE is of or relating to minute separate particles. How to use particulate in a sentence.

2025年5月27日 · Particle pollution, also called “particulate matter” or “soot,” refers to a mix of tiny solid and liquid particles that are in the air we breathe.

PARTICULATE definition: of, relating to, or composed of distinct particles. See examples of particulate used in a sentence.

2023年3月20日 · What is Particulate Matter? Airborne particulate matter (PM) is not a single pollutant, but rather a complex mixture of particles that vary widely in size, shape and chemical composition.

Particulate matter, or PM, is the term for particles found in the air, including dust, dirt, soot, smoke, and liquid droplets. Particles can be suspended in the air for long periods of time.