Main air pollutants

What are the major primary air pollutants and their sources? How are pollutants affecting US and our air? This chart names some common pollutants , their sources, and their effect on the environment. NAAQS are currently set for carbon monoxide, lea ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. Polycyclic Aromatic Hydrocarbons (PAHs).

Synthetic Vitreous Fibers. Total Petroleum Hydrocarbons. It occurs when the harmful substances such as foreign gases , odour , dust , or fumes are present in the air at levels that can harm the comfort and health of animals and humans or even destroy plant life. Ozone (O3): Ozone is not inherently bad.

Carbon Monoxide (CO): Carbon Monoxide is a highly toxic and dangerous pollutant ,. Nitrogen Dioxide (NO2): Nitrogen Dioxide is one of. Air toxics are another group of air pollutants that are typically present in low concentrations in the air but have toxic characteristics that may result in health effects from exposure even at low levels. Sources of air toxics included motor vehicle exhaust and some commercial and industrial processes. Air pollution is a mix of particles and gases that can reach harmful concentrations both outside and indoors. Its effects can range from higher disease risks to rising temperatures.

One key feature of criteria air pollutants is that they are generally widely distributed across the country. The nine major air pollutants are: Ozone (O 3). Sulfur Dioxide (SO 2). Stratospheric Ozone Depleters. Everyone keep mentioning air pollution, But what are the main air pollutants ? Human activities that are major sources of outdoor air pollution, include: Fuel combustion from motor vehicles (e.g. cars and heavy duty vehicles).

Heat and power generation (e.g. oil and coal power plants and boilers). Sulphur oxides (SOx): SO is produced by volcanoes and in various industrial processes. Carbon dioxide (CO2): A greenhouse gas emitted from combustion but is also. The pollutants come in many forms. They may be liquid droplets, solid materials, etc and many more.

Pollutants can be further subdivided into two heads, primary and secondary. EPA is required to control 1hazardous air pollutants. Ground-level Ozone (O3) Secondary pollutant formed by chemical reaction of volatile organic compounds (VOCs) and NOx in the presence of sunlight.

Decreases lung function and causes respiratory symptoms, such as coughing and shortness of breath, and also makes asthma and other lung diseases get worse. It can also harms the people, plants and animals who consume it. There are four main categories of water pollution: pathogens, inorganic compounds, organic material and macroscopic pollutants. The routine pollutants in urban air include sulphur dioxide, nitrogen oxides and suspended particulate matter.

Choose the following statement that is NOT true about the ozone hole and stratospheric ozone depletion. Ozone levels over the Arctic have not decreased in recent years.