Tuesday, March 9, 2010

nitrogen oxide pollution.

Impact of nitrogen oxide pollution (NOx)
Nitrogen oxide is often referred to as oxides of nitrogen NOx has 2 different forms of nature, namely gas NO2 and NOx gases. NO2 gas properties is colored and smelly, but for NO gas is colorless and odorless. NO2 gas colors are maroon and stinging pungent nose.

NOx levels in the air daearh densely populated urban areas will be higher than rural areas with a population slightly. This is caused by a variety of activities that support human life will increase the levels of NOx in the air, such as transportation, electric generators, waste disposal and others.

NOx air pollution teruatam gas from combustion exhaust gases which result from stationary generators or machines which use natural gas fuel. The presence of NOx in the air can be affected by sunlight that followed fotolitik NO2 reaction cycle as follows:

NO2 + sunlight → NO + O

O + O2 → O3 (ozone)

O3 + NO → NO2 + O2

There are two ways to avoid incomplete combustion, the combustion process is 2, namely:
1. Fuel burned at high temperatures with a number of air stoichiometry in accordance with the equation, for example, by 90 -95% air. NO combustion is limited not by the excess air.
2. Complete fuel burn at relatively low temperature with excess air. Low temperature to avoid the formation of NO.

Both these processes reduce the formation of NO up to 90%. NO2 in humans can be toxic to the lungs, levels of 100 ppm can cause death, 5 ppm after 5 minutes cause shortness of breath.

Sources and Pattern of Exposure
The main source of NOx in the atmosphere is from the street traffic. It is responsible for about half of total emissions in Europe. Another major source is from power plants, heating plants and industrial processes.

Many of NOx emitted as NO, which oxidized to NO2 by ozone or other oxidants.
Although motor kendraan recorded for approximately 50% of NOx emissions, a higher proportion of town. In London, 74% NOx emissions resulting from road traffic.

Strategies for NO2 monitoring data taken from space and the distribution pattern of the population most dominated by road traffic.

Characteristics of pollutants monitoring program designed to NO2 is:
* Concentrations greater determined by road traffic emissions
* This is a homogeneous space, secondary pollutants
* The ratio of peak to mean concentration are statistically strong and useful.

Impact of nitrogen oxide pollution (NOx)
Nitrogen oxides (NOx) have two kinds, namely nitrogen monoxide (NO) and nitrogen dioxide (NO2). Both these gases have different properties and both are very dangerous for health. NO gases that pollute the air is visually difficult to observe because the gas is colorless and odorless. While NO2 gases pollute the air when easily observed from the smell very pungent and reddish-brown color. Air containing NO gas in the normal range is relatively safe and harmless, except if the gas is in NO concentration. NO gas concentrations are high may cause harmful interference to the nervous system resulting in seizures. If this continues poisoning can cause paralysis of will. NO gas will become more dangerous if the gas is oxidized by oxygen gas so as to NO2.

The air is polluted by nitrogen oxides is not only harmful to humans and animals, but also dangerous for the life of plants. The influence of NOx gases in the plant include the emergence of spots on the leaf surface. At higher concentrations of these gases can cause necrosis, or damage to the leaf tissue. In these circumstances leaves may not work perfectly as the formation of carbohydrates temapat through the process of photosynthesis. As a result the plant can not produce as expected. Concentration of 10 ppm NO was able to reduce the photosynthetic ability of leaves to about 60% to 70%.

Air pollution by NOx gases may cause Peroxy nitrates Acetil abbreviated to PAN. This Peroxi Acetil nitrates cause irritation to the eyes that causes the eyes sting and water. PAN mixtures with other chemical compounds in the air can cause a chemical fog photos or photos Chemistry Smog very disrupting the environment.

Impact of nitrogen oxide pollution (NOx)
Nitrogen oxide is often referred to as oxides of nitrogen NOx has 2 different forms of nature, namely gas NO2 and NOx gases. NO2 gas properties is colored and smelly, but for NO gas is colorless and odorless. NO2 gas colors are maroon and stinging pungent nose.

NOx levels in the air daearh densely populated urban areas will be higher than rural areas with a population slightly. This is caused by a variety of activities that support human life will increase the levels of NOx in the air, such as transportation, electric generators, waste disposal and others.

NOx air pollution teruatam gas from combustion exhaust gases which result from stationary generators or machines which use natural gas fuel. The presence of NOx in the air can be affected by sunlight that followed fotolitik NO2 reaction cycle as follows:

NO2 + sunlight → NO + O

O + O2 → O3 (ozone)

O3 + NO → NO2 + O2

There are two ways to avoid incomplete combustion, the combustion process is 2, namely:
1. Fuel burned at high temperatures with a number of air stoichiometry in accordance with the equation, for example, by 90 -95% air. NO combustion is limited not by the excess air.
2. Complete fuel burn at relatively low temperature with excess air. Low temperature to avoid the formation of NO.

Both these processes reduce the formation of NO up to 90%. NO2 in humans can be toxic to the lungs, levels of 100 ppm can cause death, 5 ppm after 5 minutes cause shortness of breath.

Sources and Pattern of Exposure
The main source of NOx in the atmosphere is from the street traffic. It is responsible for about half of total emissions in Europe. Another major source is from power plants, heating plants and industrial processes.

Many of NOx emitted as NO, which oxidized to NO2 by ozone or other oxidants.
Although motor kendraan recorded for approximately 50% of NOx emissions, a higher proportion of town. In London, 74% NOx emissions resulting from road traffic.

Strategies for NO2 monitoring data taken from space and the distribution pattern of the population most dominated by road traffic.

Characteristics of pollutants monitoring program designed to NO2 is:
* Concentrations greater determined by road traffic emissions
* This is a homogeneous space, secondary pollutants
* The ratio of peak to mean concentration are statistically strong and useful.

Impact of nitrogen oxide pollution (NOx)
Nitrogen oxides (NOx) have two kinds, namely nitrogen monoxide (NO) and nitrogen dioxide (NO2). Both these gases have different properties and both are very dangerous for health. NO gases that pollute the air is visually difficult to observe because the gas is colorless and odorless. While NO2 gases pollute the air when easily observed from the smell very pungent and reddish-brown color. Air containing NO gas in the normal range is relatively safe and harmless, except if the gas is in NO concentration. NO gas concentrations are high may cause harmful interference to the nervous system resulting in seizures. If this continues poisoning can cause paralysis of will. NO gas will become more dangerous if the gas is oxidized by oxygen gas so as to NO2.

The air is polluted by nitrogen oxides is not only harmful to humans and animals, but also dangerous for the life of plants. The influence of NOx gases in the plant include the emergence of spots on the leaf surface. At higher concentrations of these gases can cause necrosis, or damage to the leaf tissue. In these circumstances leaves may not work perfectly as the formation of carbohydrates temapat through the process of photosynthesis. As a result the plant can not produce as expected. Concentration of 10 ppm NO was able to reduce the photosynthetic ability of leaves to about 60% to 70%.

Air pollution by NOx gases may cause Peroxy nitrates Acetil abbreviated to PAN. This Peroxi Acetil nitrates cause irritation to the eyes that causes the eyes sting and water. PAN mixtures with other chemical compounds in the air can cause a chemical fog photos or photos Chemistry Smog very disrupting the environment.

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