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What harm does photochemical smog cause?

What harm does photochemical smog cause?

Health Effects It causes painful irritation of the respiratory system, reduced lung function and difficulty breathing; this is more evident while exercising or working outdoors. High levels of smog also trigger asthma attacks because the smog causes increased sensitivity to allergens, which are triggers for asthma.

What are the harmful effects of photochemical smog mention any two?

Both PAN and ozone are eye irritants, while nitric oxide (formed from NO2) causes nose and throat irritation. At higher concentrations, photochemical smog leads to chest pain, headaches, throat dryness, and various respiratory ailments.

What is the effect of photochemical smog on plants?

Ozone and peroxyacetyl nitrate that travel close to the ground as a result of smog can have damaging effects on plants, resulting in the discoloration and damage to plants. This reduces the amount of photosynthesis that these plants can engage in, according to the University of California.

How does photochemical reactions affect air quality?

Photochemical air pollution causes reducing visibility, eye irritation, damage to vegetation, cracking of rubber, fading of dyes etc. Key words: Oxidants, Fog, Smog, PAN, Hydrocarbon, Ozone, Photochemical reaction, Nitric oxide, Meteorology. Air pollution is basically the presence of foreign substance in air.

What are the harmful effects of smog?

Smog can irritate your eyes, nose and throat. Or it can worsen existing heart and lung problems or perhaps cause lung cancer with regular long-term exposure. It also results in early death. Studies on ozone show that once it gets into your lungs, it can continue to cause damage even when you feel fine.

Which of the following compound is most harmful component of photochemical smog?

Ozone is the most toxic constituent of photochemical smog, and it has caused considerable damage to agricultural and native plants in many locations.

What is the harmful effect?

Something that is harmful has a bad effect on something else, especially on a person’s health.

What are the effects of photochemical smog How can photochemical smog be controlled?

2 Why Methanol From Biomass?

Country Company Capacity (kt/y)
Sweden Varmlands Metanol 100
Netherlands Woodspirit 400–900
Poland PKE & ZAK Up to 550
Germany DeBioM

What are the effect of photochemical oxidant?

The photochemical oxidants are secondary air pollutants formed by the action of sunlight on nitrogen oxides and reactive hydrocarbons, their precursors. The most important phytotoxic components produced by these atmospheric photochemical reactions are ozone and peroxyacetyl nitrate.

Is photochemical smog a secondary pollutant?

Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source (like vehicles or power plants). Photochemical smog is made up of various secondary pollutants like ozone, peroxyacyl nitrates (PANs), and nitric acid (seen in Figure 2).

How photochemical reactions can form secondary pollutants?

Both the primary and secondary pollutants in photochemical smog are highly reactive. Primary pollutants include nitrogen oxides and volatile organic compounds as a result of industrial processes, while secondary pollutants are created through the reaction of primary pollutants with ultraviolet light.

What is the main cause of photochemical smog?

Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.

Why is photochemical smog bad for your health?

Why is Photochemical Smog Bad: Its Harmful Effects On Human Health: It causes irreversible damage to the lungs and heart, causing emphysema, bronchitis, and asthma in persons with allergies. Even a brief exposure to photochemical smog has a lasting effect on both the young and the elderly.

How does photochemical smog form in the atmosphere?

Photochemical Smog. Photochemical smog, also known as summer smog, is a type of smog that is produced when UV light originating from the sun interacts with the oxides of nitrogen present in the atmosphere.

Why is smog bad for humans and animals?

Smog is unhealthy to humans and animals, and it can kill plants. Smog is also ugly. It makes the sky brown or gray. Smog is common in big cities with a lot of industry and traffic.

What makes up photochemical smog in Los Angeles?

It is also sometimes referred to as ‘Los Angeles Smog.’ Photochemical smog requires neither smoke nor fog. It mainly consists of nitrogen dioxide (NO 2 ), ozone (O 3 ), peroxyacetyl nitrate (PAN), and organic compounds containing the aldehyde group.