There are many pollution sources in buildings and, collectively, they emit biological contaminants and hundreds or thousands of different chemicals, but at low rates. Pollution sources in a building include the occupants and their activities. Furthermore materials in the building, including furnishings, carpets, cleaning chemicals etc can contribute significantly to the pollution of the air this occurrence is commonly referred to as Sick Building Syndrome (SBS).
IAQ may be expressed as the extent to which human requirements are met. Humans have two basic requirements for IAQ:
- The risk of any adverse health effects of breathing the air should be low and;
- The air should be perceived as acceptable in relation to comfort.
These two requirements should be met whenever it is practicable to do so, a building, including any ventilation or air-conditioning system, should be designed to provide the required IAQ under specified conditions.
With over 20 year’s industry experience, Elan Environmental Ltd can provide a wide range of IAQ services & solutions to test for human bio-effluents, which have often been the principal consideration for IAQ and ventilation, but also all groups and sources of pollutants that can reasonably be anticipated to occur within buildings.
As part of an IAQ assessment Elan Environmental can test for the following:
- Volatile organic compounds (VOCs) and other organics, such as formaldehyde;
- Environmental tobacco smoke (ETS);
- Other inorganic gases, such as ozone, carbon monoxide and oxides of nitrogen;
- Viable particles, including viruses, bacteria and fungal spores;
- Non-viable biological pollutants, such as particles of mites or fungi and their metabolic products;
- Non-viable particles, such as dusts and fibres;
- In addition, carbon may be considered as an indicator of the ventilation rate rather than as a health risk in its own right.
Elan Environmental can carry out on site assessments and produce a comprehensive IAQ report with recommendations on how to assist with the aim of controlling indoor air pollutants to concentration levels below which, under the prevailing hygro-thermal conditions, where the pollutants do not have the potential to:
- Cause a significant risk of adverse health effects;
- Adversely affect the comfort of the majority of occupants.