Activity 3.3.1 Air Pollution Core Activity.
Air pollution
Air pollution is the presence of harmful substances in the air we breathe, which can have negative effects on our health, the environment, and the economy. These harmful substances, also known as pollutants, can come from natural sources like wildfires, volcanic eruptions, and dust storms, or human activities like transportation, power generation, and industrial processes.
Sulfur Pollutants
Sulfur pollutants, sometimes referred to as sulfur oxides (SOx), are a class of air pollutants that are largely created when sulfur-containing fossil fuels like coal and oil are burned. Sulfur pollution may harm infrastructure, the environment, and people's health in a variety of ways. Acid rain, which may affect crops, forests, and water bodies, can be created when sulfur pollutants are released into the atmosphere and react with other pollutants. Sulfur emissions may also harm sculptures, buildings, and other metal or stone structures, as well as worsen respiratory conditions like asthma. "To reduce the harmful effects of sulfur pollutants, regulations have been put in place to limit the amount of sulfur that can be burned in industrial processes and to encourage the use of cleaner energy sources(Freedman,2018)".
Nitrogen Pollutants
Nitrogen pollutants, sometimes referred to as nitrogen oxides (NOx), are a category of air pollutants that are largely created when fossil fuels like gasoline and diesel are used in motor vehicles and industrial facilities. "Nitrogen pollution may also be caused by agricultural practices, such as the usage of fertilizers with nitrogen as a main component. Many detrimental effects of nitrogen pollution on human health, the environment, and climate change are possible(Freedman,2018)". Asthma and other respiratory issues can be brought on by exposure to nitrogen pollutants, which can also play a role in the development of smog and ground-level ozone. In the atmosphere, nitrogen pollutants can combine with other pollutants to generate fine particulate matter, which is dangerous to breathe in. Moreover, nitrogen pollution can hasten climate change by boosting the atmospheric concentration of greenhouse gases. Regulations have been put in place to restrict the amount of nitrogen that may be emitted into the air from automobiles and power plants, as well as to encourage the use of cleaner energy sources and agricultural methods, in an effort to lessen the negative impacts of nitrogen pollution.
Hydrocarbon and Volatile Organic Compound Pollutants
A form of air pollution known as a hydrocarbon (HC) or volatile organic compound (VOC) is largely created when fossil fuels like gasoline, diesel, and natural gas are burned insufficiently. It is also produced by industrial operations and consumer goods. VOCs and hydrocarbons can have a variety of detrimental effects on climate change, the environment, and human health. In addition to numerous health problems, exposure to high concentrations of hydrocarbons and VOCs can result in respiratory disorders including asthma and lung cancer. Inhaling ground-level ozone, a crucial component of smog, which may be dangerous, is made possible by hydrocarbons and VOCs. Moreover, by raising the atmospheric concentration of greenhouse gases, hydrocarbons and VOCs can contribute to climate change. "Regulations have been put in place to restrict the quantity of hydrocarbons and VOCs that can be emitted into the air from industrial operations and consumer items, as well as to encourage the use of cleaner energy sources and consumer goods with lower VOC contents(Freedman,2018)".
Air Quality Index
The Air Quality Index (AQI) is a measurement that is used to identify the air quality in a certain area. It is based on the concentration of many air pollutants, such as particulate matter, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide, and has a numerical scale with a range of 0 to 500. Governmental organizations frequently utilize the AQI to inform the public about the health dangers posed by air pollution. When AQI readings rise, so do indicators of air pollution and health risks. An air quality index (AQI) of 0 to 50 is considered to be excellent, 51 to 100 is regarded as intermediate, 101 to 150 is harmful for sensitive groups, 151 to 200 is terrible for everyone, 201 to 300 is very unhealthy, and 301 to 500 is dangerous. It may be advised that people limit their outside activities, close their windows and doors, wear air filters or masks, and limit their exposure to the outdoors when the AQI is high in order to protect themselves from the harmful effects of air pollution.
Comparison of Current AQI
|
|
Time of Day |
AQI Current |
AQI Forecast |
PM2.5 |
O3 |
Shenyang, China (Highest) |
12:00 pm |
158 |
unhealthy |
69 |
50 |
|
San Antonio TX (Where I Live) |
12:00 pm |
64 |
Moderate |
18.4 | 46 |
|
Los Angeles, CA |
10:00 am |
24 | Good | 5.7 | 52 |
China seems to be the highest which is not surprising considering how much pollution they use everyday there. San Antonio and seems to be at a moderate rate for the air quality which is surprising just because the city is nit as big as Los Angles. Los Angles seems to be at a good rate for the air index but is a surprise because its a huge area and many are traveling/ moving there meaning more cars and buildings to produce.
PM-2.5
Particulate Matter 2.5, or PM2.5, refers to minute airborne particles with a diameter less than 2.5 micrometers. The burning of fossil fuels, wildfires, construction projects, and agricultural operations are only a few of the origins of these particles. Due to their small size, PM2.5 particles may profoundly enter the lungs and even the circulation, leading to a variety of health issues such as cardiovascular and respiratory disorders. Environmental organizations routinely monitor PM2.5, a significant contributor to air pollution, to make sure that levels stay below acceptable ranges.
Ozone (O3)
Three linked oxygen atoms make up the gas known as O3, or ozone. It is created by a chemical process combining oxygen molecules and UV rays in the Earth's upper atmosphere. Ozone in the upper atmosphere plays a crucial role in shielding the planet from the damaging effects of UV radiation. Ozone, however, may be bad for the environment and human health at ground level. When sunlight and volatile organic molecules react in the presence of heat, ground-level ozone is created. This kind of ozone contributes significantly to pollution and has been linked to respiratory issues like chest discomfort, coughing, and shortness of breath. Crops, woods, and other vegetation may also suffer harm. Environmental agencies closely monitor ground-level ozone levels and issue warnings and alerts when levels exceed safe limits. Steps can be taken to reduce ground-level ozone, such as reducing emissions from vehicles and industrial sources, and using cleaner fuels and technologies.
A significant source of air pollution and a number of health issues are caused by PM2.5 particles. These microscopic particles, which have a diameter of less than 2.5 micrometers, can originate from a number of things, including the burning of fossil fuels, wildfires, building projects, and agricultural operations. PM2.5 particles may go far into the lungs after inhalation and even into the bloodstream. Many health issues, including respiratory and cardiovascular conditions including asthma, chronic bronchitis, and heart attacks, can result from this. Premature death has been connected to prolonged PM2.5 exposure. When PM2.5 levels go over acceptable limits, environmental agencies issue warnings and alarms. It is advised to avoid outdoor activities during periods of high pollution, utilize air filters in homes and workplaces, and minimize emissions from automobiles and industrial sources to reduce exposure to PM2.5 particles.
On the other hand, ozone is a gas consisting of three linked oxygen atoms. Ozone in the high atmosphere is crucial for shielding the planet from UV radiation, but ozone at ground level may have negative impacts on both human health and the ecosystem. When sunlight and volatile organic molecules react in the presence of heat, ground-level ozone is created. This kind of ozone contributes significantly to pollution and has been linked to respiratory issues like chest discomfort, coughing, and shortness of breath. In addition, respiratory disorders including asthma and chronic obstructive lung disease can be made worse by ozone (COPD). Crops, woods, and other vegetation may also suffer harm. It is advised to avoid outdoor activities during periods of high pollution, minimize emissions from cars and industrial sources, and utilize cleaner fuels and technologies in order to lessen exposure to ground-level ozone. Environmental organizations keep a tight eye on ozone levels and issue alerts and warnings when levels go over acceptable limits.
Comparison of Current PM2.5 and O3 to EPA Standards
Work Cited
“Texas Commission on Environmental Quality.” Go to TCEQ Web Page, https://www.tceq.texas.gov/cgi-bin/compliance/monops/select_curlev.pl?user_param=88101.
Freedman, B. (2018). Environmental science: A Canadian perspective. Halifax, Canada: Dalhousie University Libraries.
“Los Angeles Air Quality Index (AQI) and California Air Pollution.” IQAir, https://www.iqair.com/us/usa/california/los-angeles.
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