1.Introduction
Air pollution is phenomenon which air is contaminated by some substances ( Besiness dictionary, ? ) including particulates and biological molecules. It may cause not only many diseases, allergies or even death but also can affect badly on other living organisms like animals, food crops, and may damage the environment ( Wikipedia, ? ).
In Viet Nam, air pollution is one of the hottest issues. Particulary Hanoi is heavily damaged because this city have very much vehicles, always have traffic jams along with the development of industry. For example, the rate of growing speed motor vehicles in Hanoi is very fast, about from 12 percent to 15 percent annually ( Journal of Environment Protection, 2013). In addition, In the period 1986-1990 the growth rate of Hanoi is 7.1 percent, and then to the 1991-1995 period reached 12.5 percent and 10.6 percent. In the 1996-2000 period, Hanoi is one of the local fast high growth with GDP
2. Discussion of findings
2.1 The current situation of air pollution in Hanoi
2.1.a The concentration of dust in the air exceeds the permissible level
Nowadays, scientists warm thatvair pollution caused by dust in Hanoi is more anh more dangerous. The result of measuring the concentration of dust in Hanoi shows that in the city centre, this number surpasses 2-3 times the permited standard ( Thuc trang o nhiem khong khi o Ha Noi nhu the ao, nguyen nhan tai sao, va can phai lam gi de han che tinh trang nay, 2009). According to Ha Noi Resource and Environment Department, some areas in Hanoi sach as National Conference Centre, Cuan Thuy street, Khuat Duy Tuen street, have the very high rate of dust pollution. In 2008, this rate increased to 85 percent taht overtook the permitted level and was tiwce more in 2007.
2.1.b The amount of waste gas increase
When we think of air pollution we think of the refineries in our cities and the exhaust coming from our cars mostly. In reality there are many more pollutants that we don't think about every day. The six most common air pollutants are; “Carbon monoxide, Nitrogen oxides, Sulphur oxides, Particulate matter, Volatile organic compounds, and Ground-level ozone (nitrogen oxide and Volatile organic compounds reaction)”(David Suzuki Foundation). The fact is people are dying from air pollution and we are doing nothing to make it better, in fact air pollution is getting worse.
In an era of rising technology and increasing population, demands on the environment are continually being pushed to new levels. As a result, it becomes important for us to expand our knowledge about the environment and take appropriate actions to protect this element of most importance to human existence. One component of our environment experiencing some of the greatest abuse due to humans is the air. Air pollution has been on the rise ever since the beginning of industrialization. The climbing number of factories and use of cars worldwide are the major culprits of this environmental hazard. There are various gases released into the air that can be considered air pollutants, but one of the most prevalent and dangerous to the environment is carbon dioxide (CO2). Up to 95% of the CO2 produced is the result of natural processes (Burnett & Matthews Jr., 1998). The rest is a direct result of human activity, primarily through the burning of fossil fuels in the production of energy
Air pollution is known to affect human and animal life. Plants are also affected indirectly as air pollution is known to cause acid rain, an even deeper detriment to plant life than most. Lung related diseases are among the most important features that the world have come
There are many kinds of air pollution. The ones I want to talk about are the ozone, acid rain, carbon monoxide and toxic air contaminants. Ozone is formed when hydrocarbons and nitrogen oxide react in sunlight. Therefore, ozone is at its peak during hot summer days. Exposure to high levels of ozone can have serious consequences on your health. It can cause respiratory disease, loss of pulmonary elasticity, and premature aging of our lungs. Next, is acid rain, which occurs in the atmosphere in the form of sulfur and nitrogen oxide. These pollutants can have serious damaging affects on aquatic, forest and wildlife ecosystems, as well as deterioration of buildings. Carbon monoxide is another form of pollution. It reduces the blood?s ability to carry oxygen. If a human is exposed to higher levels, it can cause chest pains, angina attacks or even death.
Air pollution is not something new; in fact, air pollution has been even documented as far back as the 16th century. During the industrial revolution the sights of smoke coming out from factory were a sign of prosperity. This might have been prosperity in the economic point of view, but as we can see now, in the environmental point of view it was not prosperous at all.
Many cities are currently affected by air pollution and Hong Kong is one example. Hong Kong’s air pollution level often exceeds the recommended air pollution level put out by the World Health Organization, and Hong Kong’s pollution index was at “very high” meaning that it exceeded 101, for 34% of the time (Hunt, 2011). Another example, when Hong Kong excee...
Until 10 years ago, air pollution was thought to be just an urban or local problem until it was discovered that the pollutants could move across continents and oceans. Air pollution is the fundamental factor that causes greenhouse gases, hence climate change and global warming. Air pollutants are the waste products generated from industrial and other processes. They usually come in gases, though aerosols (particles suspended in air, emitted as or formed by transformatio...
Air pollution is caused by many things such as car fumes, burning of fossil fuels,
Air pollution according to the Wikipedia << is the introduction of particulates, biological materials, or other harmful materials into the Earth’s atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment>>. Therefore, human being should be aware of the facts that the environment and all living creatures are dying. They need to understand the importance of natural items, the nature, etc…
Air Pollution is when a poisonous or a harmful substance is released in the air. There are many form of pollution but air is one of them, it only occurs when dust, harmful gases or smoke enters into the atmosphere and makes it hard for species like plants, animals and humans to live in a difficult situation because of the dirty air.Air Pollution is classified in two sections, invisible air pollution and visible air pollution.. Hence any substance that makes it difficult for the living things that need the atmosphere is air pollution.Humans have been undergoing air pollution ever since the industrial revolution.In order to understand the causes of Air pollution, it is divided into divisions. Primary air pollutants and secondary air pollutants:
What is air pollution? Air pollution is the introduction of chemicals, particles, biological materials, or other harmful materials into the Earth's atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. Some air pollutants that are poisonous are extremely dangerous when inhaled. Air pollution takes place when our air accommodates gases, dust, fumes or odor in harmful amounts. That is, amounts which could be damaging to the health or well being of humans and animals, causing damage to plants and or materials. Substances that cause air pollution are called pollutants. Pollutants that are pumped into our atmosphere directly, pollute our air. These are called primary pollutants, which consist of carbon monoxide from car exhausts and sulfur dioxide from the combustion of coal. Examples of secondary pollutants would be ozone, nitrogen oxides, and sulfur dioxide, when combined cause acid rain. Smog, a more formerly known from of pollution qualifies as a primary,...
Every other day a new industries are being set up, new vehicles on roads and trees are being cut to make way for new homes. All of them, indirect way lead to increase in CO2 leads to melting of polar ice caps which increase the sea level and pose danger for the people living near coastal areas. Pollution can have an impact in our health not only affects people with impaired respiratory system such as asthmatics, but very healthy adults and children too. Exposure to pollution for 6 to 7 hours, even at relatively low concentrations, reduces lung function and induces respiratory inflammation and, healthy people during periods of moderate
Air pollution is a type of pollution that can severely damage our environment as well as the earth’s atmosphere. Air pollution occurs all the time when the air contains many substances ...
Pollution is a massive problem that the earth faces. Pollution is the action or process of making land, water, air, etc…, dirty and not safe or suitable to use. Pollution of air, water, and soil are the most complex issues. Various types of gases and toxins that are released by industries
Pollution is so harmful to human beings. Polluted water can cause many kinds of diseases, such as diarrhea, enteritis, and so on. And sometimes the diseases even take man’s life. Dirty air or air-borne garbage causes stinging eyes and running nose. Pollutants are destructive. They will cause runs in stockings and crack rubber tires and they always eat away at stone and rust iron. Time and time again, there are serious accidents that polluted the air. For example, At 1986 there was a bad accident at a nuclear power station in Russia. A cloud of radiation crossed the whole Europe. It is said that 125,000 people died in Russia as a result of illnesses caused by that accident. In 1984 there was an accident at a factory in India and a dangerous cloud gas covered the town of Bhopal. Over 2,500 people were killed that night, and hundreds and thousands of people were injured. Many of the injured lost their sight, and it really dangerous, even in our imagination.