Table of Contents
Why is air contamination a problem?
Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term damage to people’s nerves, brain, kidneys, liver, and other organs. Some scientists suspect air pollutants cause birth defects.
What can affect indoor air quality?
There are three major sources of contaminants affecting indoor air quality:
- Indoor. Personal Activities (smoking or personal hygiene)
- Outdoor. Contaminated outdoor air (vehicle exhaust, pollen, or industrial pollutants)
- HVAC System. Inadequate distribution of fresh air in ventilation system.
What is indoor air pollution What are the primary sources of this pollution and how does this relate to sick building syndrome?
Most indoor air pollution comes from sources inside the building. For example, adhesives, carpeting, upholstery, manufactured wood products, copy machines, pesticides, and cleaning agents may emit volatile organic compounds (VOCs), including formaldehyde.
What are the causes of indoor air pollution in Pakistan and why is it a problem?
The use of biomass fuel as an energy source is the biggest contributor to poor indoor air quality followed by smoking. In order to arrest the increasing levels of indoor pollution, there is a dire need to recognize it as a major health hazard and formulate a national policy to combat it.
What is air pollution and what are the main causes of air pollution?
Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it’s also called smog.
What is primary and secondary air pollution?
Primary & Secondary pollutant. Definition: A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
What is Indoor Environmental Quality explain briefly factors affecting it?
Indoor environmental quality (IEQ) refers to the quality of a building’s environment in relation to the health and wellbeing of those who occupy space within it. IEQ is determined by many factors, including lighting, air quality, and damp conditions.
What are the factors that affect air environment?
When studying air quality, it is important to measure the following factors as they can help us understand the chemical reactions that occur in the atmosphere:
- wind speed and direction.
- temperature.
- humidity.
- rainfall.
- solar radiation.
What is a primary pollutant?
A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
What was the main reason for creating the EPA?
Established by President Nixon in December 1970, the EPA—a U.S. federal agency designed to protect human and environmental health— was created in response to heightened concerns about pollution and its negative externalities.