Describe the sources and impacts of indoor air ... - SS2 Chemistry Environmental Chemistry: Atmosphere and Water Question

Indoor air pollutants originate from various sources within enclosed spaces such as homes, offices, and buildings. Some common indoor air pollutants and their sources include:

a.    Combustion Pollutants: Emitted from fuel-burning appliances such as stoves, fireplaces, and heaters. They include carbon monoxide (CO), nitrogen dioxide (NO2), and particulate matter (PM).

b.    Volatile Organic Compounds (VOCs): Released from cleaning products, paints, adhesives, carpets, furniture, and tobacco smoke.

c.     Biological Pollutants: These include mould spores, pollen, bacteria, viruses, and pet dander.

d.    Radon: A radioactive gas that can enter buildings through the ground. It is a leading cause of lung cancer.

The impacts of indoor air pollution can range from short-term effects such as irritation of the eyes, nose, and throat, to long-term effects on respiratory health and the development of chronic conditions like asthma and allergies. Indoor air pollution can also affect productivity and comfort in indoor environments.

Ensuring good indoor air quality is crucial for human health and well-being. Measures to mitigate indoor air pollution include:

●     Adequate ventilation: Proper ventilation, such as through the use of fans, open windows, or mechanical ventilation systems, helps to dilute and remove indoor pollutants.

●     Source control: Reducing or eliminating pollutant sources through proper storage, regular cleaning, and use of low-emission products can minimise indoor air pollution.

●     Air purification: Using air purifiers with high-efficiency particulate air (HEPA) filters or activated carbon filters can help remove pollutants from the air.

●     Regular maintenance: Regularly inspecting and maintaining HVAC systems, addressing water leaks, and controlling humidity levels can prevent the growth of mould and accumulation of pollutants.

Improving indoor air quality promotes healthier living and working environments, reducing the risks associated with indoor air pollutants.