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The most common "city pollution" people think of is Photochemical Smog. I quote: "Photochemical smog is an atmospheric condition that produces severe eye irritation and poor visibility, to name just two of the effects. Three ingredients -- energy from a light source (ultraviolet), hydrocarbons, and nitrogen oxides -- are needed for photochemical smog to be formed. Two of those components are produced through the burning of fossil fuels, most notably automobiles. Photochemical smog is also sometimes known as "oxidizing smog", in that it has a high concentration of oxidizing agents. Ozone is a common oxidizing agent found in photochemical smog. Another type of smog, "reducing smog", has high concentrations of sulfur dioxide, which is a reducing agent. Its presence has historical significance in studies done in places like London, which used sulfur-containing coal as its main energy source."
Basically your car burns fuel in air/oxygen. We all know CO2 is one product of this combustion, but depending on the air to fuel (A/F) ratio, other compounds are also formed. The perfect stoichiometric point for gasoline is 14.7; or 14.7 pounds of air to 1 pound of gasoline. Any more air and it's a lean ratio, any less and it's a rich ratio.
If the combustion was perfect, you would get your hydrocarbon gasoline combustion converted into heat, energy, CO2, N2, and H2O. But the combustion never is perfect, so you also get:
- Carbon monoxide (CO) is a poisonous gas that is colorless and odorless.
- Hydrocarbons or volatile organic compounds (VOCs) are a major component of smog produced mostly from evaporated, unburned .fuel.
- Nitrogen oxides (NO and NO2, together called NOx) are a contributor to smog and acid rain, which also causes irritation to human mucus membranes.
NO2 is the main culprit of Photochemical Smog. It can also cause acid rain and other problems. NOx can react with atmospheric oxygen to produce tropospheric Ozone (very bad). Unlike the the ozone up in the stratosphere protecting us, ground level ozone is smog, and harmful.
Your car's catalytic converter is an amazing invention from the 1970s that helps reduce these emissions. The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the NOx emissions. When an NO or NO2 molecule contacts the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2. The nitrogen atoms bond with other nitrogen atoms that are also stuck to the catalyst, forming N2. For example:
2NO => N2 + O2 or 2NO2 => N2 + 2O2
What else can I help you with?
What is the least polluted cities in the world?
Some of the least polluted cities in the world include Reykjavik in Iceland, Honolulu in Hawaii, and Stockholm in Sweden. These cities have implemented strict environmental regulations, prioritize sustainability, and have low levels of air and water pollution compared to other cities.
Which is less air polluted city in India?
Some of the less air polluted cities in India include Mysore, Thiruvananthapuram, and Visakhapatnam. These cities have relatively better air quality compared to others due to factors such as better urban planning, lower population density, and less industrial activity.
According to the World Health Organization what is the most polluted city in the world?
The World Health Organization has identified Delhi, India as one of the most polluted cities in the world. The city often faces severe air pollution due to factors like vehicle emissions, industrial activities, and crop burning.
Which is the most polluted city in America?
The title of the most polluted city in America can vary based on different pollutants measured. Cities like Los Angeles, Bakersfield, and Fresno in California often rank high in terms of air pollution due to factors like traffic congestion and industrial emissions. However, it's important to note that pollution levels can fluctuate and be influenced by various factors.
What city produces the most air pollution?
As of currently, the city of Delhi in India ranks among the world's most polluted cities, with high levels of air pollution caused by factors such as vehicle emissions, industrial activities, and crop burning. Other cities known for significant air pollution include Beijing in China and Lahore in Pakistan.
Is the following sentence true or false The air in many American cities is still polluted?
yes
What is the reason that some plants cannot live very close to the ocean?
air polluted
What is the least polluted cities in the world?
Some of the least polluted cities in the world include Reykjavik in Iceland, Honolulu in Hawaii, and Stockholm in Sweden. These cities have implemented strict environmental regulations, prioritize sustainability, and have low levels of air and water pollution compared to other cities.
What is polluted places?
a air polluted place is a place in which air is polluted in India Delhi is the most polluted
Does air in a countryside cleaner than in the big cities?
no because the are of the big cities is going to pass in the smallest country thats why the polluted is passed on the atmosphere.
Which is less air polluted city in India?
Some of the less air polluted cities in India include Mysore, Thiruvananthapuram, and Visakhapatnam. These cities have relatively better air quality compared to others due to factors such as better urban planning, lower population density, and less industrial activity.
Which city in India least polluted?
Most cities in Himalayan mountains. Best Air among Asian regions.
Which city in India is least polluted?
Most cities in Himalayan mountains. Best Air among Asian regions.
What population groups tend to get black lung disease?
Although people who live in cities often have some black deposits in their lungs from polluted air, coal miners have much more extensive deposits.
What happens when hot air and polluted air get together?
It becomes hot polluted air.
Which problem of rapidly growing 19th century cities proved to be the greatest health risk?
polluted air and drinking water
Where are waters polluted and why?
The waters are polluted in rivers,lakes,ponds and sea's. The reason is because people are throwing things there not ment to in the rivers etc. Or that the factories produce gas in the air and that goes to the river :)
