Air Pollution 19

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A RESEARCH ON AIR POLLUTION NOWADAYS

PROF. MADYA ZAMRI ABDUL RAHMAN
LECTURER

FATIN ADAWIYAH MOHAMAD PAUZI2007288974
HAFISHAH HALIM2007288918
MAZMIR MAT NOH2007288996

[pic]
UNIVERSITI TEKNOLOGI MARA MALAYSIA
20 AUGUST 2007

TABLE OF CONTENT

1.0ABSTRACT3
2.0INTRODUCTION4
3.0PROBLEM DEFINITION5
4.0METHOD OF SOLUTION5
5.0RESULT AND DISCUSSION5
6.0CONCLUSION5
7.0REFERENCES5
8.0APPENDIX5

1. ABSTRACT

In recent years, our environment has been dealt with on a very serious level. This due to the uncontrollable contamination has been done by the irresponsible people who mostly involve in manufacturing. On the other hand, person who not involve with such a thing still not excused from this problem and the person is us. Moreover, we are unconscious that almost 60% from the caused of the pollution is contributed by us.

Air pollution is a chemical or particulate matter or biological agent that modifies the natural characteristics of the atmosphere. So, our goals to conduct a research on air pollution. This include the investigation on its sources, future effects to human being either short-term or long-term effect and included with some efforts to cope with this problem.

We had accomplished this research by searching the information and done some revision. We had surfing the internet, done some revision on the book about air pollution and made an informal interview among our friends, asking them their opinion about air pollution.

2. INTRODUCTION
Human is probably first experienced harm from air pollution when they built fires in poorly ventilated caves. Since then we have gone on to pollute more of the earth's surface. Until recently, environmental pollution problems have been local and minor because of the Earth's own ability to absorb and purify minor quantities of pollutants. Factors contributing toward the growing air pollution problem are the industrialization of society, the introduction of motorized vehicles and the explosion of the population. At this time, it is urgent that we find methods to clean up the air.

The primary air pollutants found in most urban areas are carbon monoxide, nitrogen oxides, sulfur oxides, hydrocarbons, and particulate matter. These pollutants are isolated throughout the world's atmosphere in concentrations high enough to gradually cause serious health problems. Serious health problems can occur quickly when air pollutants are concentrated such as when gigantic injections of sulfur dioxide and suspended particulate matter are emitted by a large volcanic eruption.

Worldwide air pollution is responsible for large numbers of deaths and cases of respiratory disease. While major stationary sources are often identified with air pollution, the greatest source of emissions is actually mobile sources, mainly automobiles. Gases such as carbon dioxide, which contribute to global warming, have recently gained recognition as pollutants by some scientists. Other recognizes the gas as being essential to life and therefore not capable of being classed as a pollutant.

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3. PROBLEM DEFINITION
The combustion of gasoline and other hydrocarbon fuels in automobiles, trucks, and jet airplanes produces several primary pollutants: nitrogen oxides, gaseous hydrocarbons, and carbon monoxide, as well as large quantities of particulates, chiefly lead. In the presence of sunlight, nitrogen oxides combine with hydrocarbons to form a secondary class of pollutants, the photochemical oxidants, among them ozone and the eye-stinging peroxyacetylnitrate (PAN). Nitrogen oxides also react with oxygen in the air to form nitrogen dioxide, a foul-smelling brown gas. In urban areas like Los Angeles where transportation is the main cause of air pollution, nitrogen dioxide tints the air, blending with other contaminants and the atmospheric water vapor to produce brown smog. Although the use of catalytic converters has reduced...
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