What is particulate matter composed of?

What is particulate matter composed of?

“Particulate matter,” also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets. Particle pollution is made up of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.

What is PM level in pollution?

And the “prominent pollutant” there, the CPCB said, was PM 2.5. Simple: PM is particulate matter, and 10 and 2.5 are diameter measurements: 10 micrometers or less, and 2.5 micrometers or less.

What makes up particulate matter air pollution?

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, are large or dark enough to be seen with the naked eye.

What pollutant has the formula PM?

Particulate Matter (PM) Pollution | US EPA.

What are the major sources of particulates?

Particulate matter is generic term to classify air pollutants comprising of suspended particles in air, varying in composition and size, resulting from various anthropogenic activities. Industrial facilities, Power plants, vehicles, incinerators, dust and fires are the major source of particulate matter.

What do PM10 and PM 2.5 mean?

particulate matter
PM10 is particulate matter 10 micrometers or less in diameter, PM2.5 is particulate matter 2.5 micrometers or less in diameter. PM2.5 is generally described as fine particles. By way of comparison, a human hair is about 100 micrometres, so roughly 40 fine particles could be placed on its width.

Which particle is called the particulate pollutants?

4. Which of the following particles is called the particulate pollutants? Sol: (c) Fly Ash.

Is PM 2.5 made of molecules?

PM 2.5 particles are complex because they can be made up of numerous types of chemicals and particles, and they can be partly liquid, as opposed to solid, like a common dust particle. Particulate pollutants that are entirely or partly made up of liquid droplets are known as an aerosol.

What is PM2 5 Made?

Dust, spores and pollen are some examples. PM2. 5 refers to particles that have diameter less than 2.5 micrometres (more than 100 times thinner than a human hair) and remain suspended for longer. These particles are formed as a result of burning fuel and chemical reactions that take place in the atmosphere.