AIR POLLUTION

INTRODUCTION AND CAUSES

What is Air Pollution?

Air pollution refers to the introduction of harmful and undesirable substances into the Earth's atmosphere, resulting in the alteration of its natural composition. These pollutants can include gases, particulate matter, biological molecules, and other harmful materials, often emitted from human activities such as industrial processes, transportation, and the burning of fossil fuels. Air pollution poses significant environmental and health risks, contributing to climate change, damaging ecosystems, and negatively impacting human respiratory and cardiovascular systems. Monitoring and mitigating air pollution are crucial for preserving air quality, protecting public health, and addressing broader environmental concerns.

Types of Air Pollution




1.Particulate Matter (PM)

2.Gaseous Pollutants

Particulate Matter (PM) refers to a complex mixture of tiny particles and liquid droplets suspended in the air. These particles vary in size, composition, and origin, and they can have diverse effects on both human health and the environment. PM is a significant component of air pollution and is categorized based on particle size, often denoted as PM10 (particles with a diameter of 10 micrometers or smaller) and PM2.5 (particles with a diameter of 2.5 micrometers or smaller).

Gaseous pollutants refer to various harmful substances that exist in a gaseous state and are released into the air as a result of human activities and natural processes. These pollutants can have adverse effects on both human health and the environment. Common gaseous pollutants include nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3), and volatile organic compounds (VOCs).



Causes Of Air Pollution



1.Combustion of Fossil Fuels:

Cause:The burning of coal, oil, and natural gas in power plants, industrial facilities, and vehicles releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter.



2.Industrial Activities:

Cause:Manufacturing processes, chemical production, and other industrial activities release a variety of pollutants, including particulate matter, VOCs, and toxic chemicals



3.Transportation Emissions:

Cause:Combustion engines in vehicles emit pollutants such as NOx, CO, particulate matter, and VOCs



4.Agricultural Practices:

Cause:The use of fertilizers, pesticides, and intensive livestock farming releases ammonia (NH3) and methane (CH4)



5.Waste Management:

Cause:Improper disposal and treatment of solid waste, as well as open burning of waste, release pollutants like particulate matter, CO, and harmful chemicals.



6.Deforestation and Biomass Burning:

Cause:Clearing land for agriculture and the intentional burning of forests release large amounts of CO2 and particulate matter.



7.Natural Sources:

Cause:Natural events such as wildfires, volcanic eruptions, and dust storms release particulate matter, ash, and gases into the air.



8.Indoor Sources:

Cause:Use of household products like paints, cleaning agents, and cooking with solid fuels indoors releases pollutants such as VOCs, particulate matter, and carbon monoxide.




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