The hidden life cycle of indoor air pollutants
Written by Muhammad Rajput from FreshBreeze Environmental Ltd
Our homes are meant to be sanctuaries of comfort and wellbeing, yet emerging research warns that everyday household products may be compromising our indoor air quality.
Recent studies from the University of Birmingham and Manchester based research have shed light on how common items, from cleaning agents to scented candles, release chemicals that can disrupt our health.
The chemistry behind indoor pollutants
At the heart of the issue are volatile organic compounds (VOCs) such as benzene, toluene, and terpenes.
When products like air fresheners or cleaning sprays are used, they emit these VOCs into the indoor environment.
These compounds are not static; they interact with naturally present ozone, a process that can yield secondary pollutants such as formaldehyde and ultrafine particles.
The chemical reaction not only transforms the original compounds but also creates a cascade of pollutants that can settle on surfaces or be redispersed into the air.
Understanding the life cycle of indoor pollutants
1 Emissions
Household products and cooking methods release primary pollutants (e.g. VOCs) into the air.
2 Transformation
Once airborne, these compounds react with indoor ozone and other oxidants, forming secondary pollutants.
For instance, the reaction between terpenes (found in many scented products) and ozone may produce formaldehyde... a known irritant and carcinogen.
3 Dispersion and deposition
The newly formed pollutants disperse throughout the home, some remaining suspended while others deposit on surfaces, contributing to a lingering indoor air quality challenge.
Research insights
University of Birmingham
Research at the University of Birmingham by Professor Francis Pope highlights that conventional cooking methods tend to emit higher levels of particulate matter and VOCs.
In contrast, air fryers significantly reduce pollutant release by utilising less oil and operating in a more controlled, enclosed environment. This finding underscores the importance of rethinking our kitchen habits for healthier indoor air.
University of Manchester
Recent findings at the University of Manchester, reported by the Manchester Evening News, reveal that common household products, including cleaning agents and scented items, are substantial sources of indoor VOCs.
These studies emphasise the chemical journey from emission to transformation, illustrating how even products designed to make our lives easier can contribute to hidden air quality challenges.
How to take action for healthier air
1 Improve ventilation: Open windows or use mechanical ventilation to dilute indoor pollutants.
2 Choose low-emission products: Opt for fragrance-free or naturally scented products where possible.
3 Adopt cleaner cooking techniques: Embrace methods like air frying to reduce harmful emissions.
4 Regular cleaning and maintenance: Keep surfaces dust-free and consider air purifiers with HEPA filters for added protection.
Summary
Understanding the life cycle of indoor pollutants, right from their emission to their chemical transformation.... empowers us to make informed choices.
By incorporating the insights from Birmingham and Manchester Unversity-based researchs, we can actively enhance our indoor environments, ensuring they remain places of true well-being.