Indoor air quality (IAQ) relates to a number of environmental factors inside a building that can impinge on the health, comfort, or work performance of the building’s occupants. Monitoring IAQ is vital because it is estimated that the average person spends 90% of their time breathing “indoor air”.
Poor IAQ is a contributing factor to both short and long-term health issues, these can lead to decreased productivity, absenteeism, and in some cases possible litigation. Common symptoms associated with poor indoor air quality can include eye, nose, and throat irritation, headache, nausea, dizziness, and fatigue. In some cases exposure to indoor air pollution can lead to acute and chronic respiratory illnesses.
Maximum permitted exposure levels for hazardous contaminants are set in for many gases in various countries; when these are exceeded it is illegal, risking heavy fines and claims for organizations.
Factors that contribute to an unhealthy Indoor Air Environment.
Gas and particulates in the air are the principal sources that contribute to unhealthy IAQ. Common factors that can lead to a harmful indoor environment can include inadequate ventilation, poorly maintained HVAC systems, non-vented gas heaters, airborne pollutants carpet fibers, fungal spores, vehicle exhaust emissions, building materials, carpeting, furniture, chemical pollutants (light industrial chemical substances, cleaning substances), Ozone emissions from printers and photocopiers etc.
Another problem is recent energy conservation measures that have led to airtight building construction that can create problems with IAQ. The concentrations of pollutants can also be amplified by factors such as poor.
In order to accurately understand a building’s indoor air quality, it is advised to simultaneously monitor various indoor air quality parameters including gases, temperature and humidity.
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