Natural sources of air pollution
What is one of the biggest sources of air pollution
There is growing evidence that independently, it can increase symptoms of bronchitis and asthma, as well as lead to respiratory infections and reduced lung function and growth. What causes air pollution? It is not unknown for Saharan dust to be deposited in the UK after being blown thousands of miles. Waste incinerators, manufacturing industries and power plants emit high levels of carbon monoxide, organic compounds, and chemicals into the air. In this study, the association was higher for non-smokers than smokers. A child engaged in vigorous exercise will have a higher respiration rate than the same child in a sedentary activity. Last updated: January 17, Experience More. The reviewers also found suggestive evidence that exposure to PM2. It is a secondary pollutant, meaning that it is not directly emitted. Lead from leaded gasoline, power plants and metal refineries contaminates crops and livestock and causes brain and kidney damage. The highest impurity levels reached are not uncommon in some classroom or office environments.
Zhang et al. Ozone is one of the most common natural air pollutants.
For example, one may want to calculate the exposure to a hazardous air pollutant for a geographic area, which includes the various microenvironments and age groups. Studies have shown that in urban areas patients suffer mucus hypersecretion, lower levels of lung function, and more self-diagnosis of chronic bronchitis and emphysema.
Intentional air pollution is introduced with the use of air freshenersincenseand other scented items. Accumulation mode particles particles with diameters between 0.
These associations were statistically significant in both summer and winter, although, summer was greater. Actual amounts released from natural sources in the world are difficult to quantify.
based on 88 review