What is air pollution? Distinguish between primary pollutants and secondary pollutants and give an example of each. List the major outdoor air pollutants and their harmful effects. Describe the effects of lead as a pollutant and how we can reduce our exposure to this chemical. Describe a chemical method and a biological method for detecting air pollutants.

Air pollution occurs when harmful or excessive quantities of

substances are introduced into Earth's atmosphere. Sources of air

pollution include gases (such as ammonia, carbon monoxide, sulfur

dioxide , nitrous oxides , methane and chlorofluorocarbons),

particulates (both organic and inorganic), and biological molecules .

Explanation:

Explanation:

What is air pollution?

Atmospheric pollution refers to changes in the Earth's atmosphere that may have an impact on the environment or human health, through contamination by gases, solid particles, suspended liquids, biological material or energy.

Distinguish between primary pollutants and secondary pollutants and give an example of each:

Primary pollutants - are those that are emitted directly by the sources of atmosphere (for example, the gases that come from the exhaust pipe of a motor vehicle or of a factory of a factory). By the other hand, Secondary pollutants - are those that result from chemical reactions that occur in the atmosphere and between primary pollutants. An example of this is tropospheric ozone (O3), which results from photochemical reactions, which it establishes between nitrogen oxides (NOx) and volatile organic compounds (VOCs).

Describe the effects of lead as a pollutant and how we can reduce our exposure to this chemical.

A study points out that, as the lead particles are inhaled, as the particulate material and are deposited in the lungs, although they can also be bought by the digestive. From then on, when absorbed, the cumulative effect causes these deposits to also be found in teeth and bones and cause disease. We can reduce the exposure to the chemical by replacing lead from manufactured products and/or by correct discard of CRT monitors and fluorescent lamps.

Describe a chemical method and a biological method for detecting air pollutants.

Using the biological method some plants can act as bioindicators, they have visible symptoms such as necrosis, chlorosis and physiological disorders such as reduced growth, reduced number and diameter of flowers depending of the pollution materials. But using a chemical mode, various methodologies and equipment have been developed to detect the amount of particulate matter and gases present in the atmospheric air. These equipments have electrochemical sensors that are responsible for monitoring these gases.