As an IAQ solution provider, Indoor Air Quality Centre "室內空氣質素中心" provide measurement of IAQ parameters according to Environmental Protection Department (EPD)’s Guidance Note in Hong Kong.
ause of indoor air pollution
The primary cause of indoor air pollution is the emission of polluting gases or particles indoors.The poor outdoor air quality also brings in air pollutants and odour into the ventilation system of the building. Inadequate ventilation can increase indoor air pollutant levels by not bringing in enough fresh air to dilute the pollutants and carrying them away. High temperature and humidity levels can also increase concentrations of some indoor air pollutants, such as formaldehyde or bacteria.
Common indoor air pollutants found in air-conditioned buildings
Common indoor air pollutants found in air-conditioned buildings include carbon dioxide, respirable suspended particulate, formaldehyde, total volatile organic compounds and airborne bacteria. The level of some combustion products like carbon monoxide and nitrogen dioxide may be high if there is a carpark close to your premises or burning stoves are used indoors (e.g. in barbecue restaurants). Elevated level of nicotine and respirable suspended particulates is not uncommon when there is smoking activity in the premises. In addition, the level of ozone may be high if a number of ozone emitting office equipment like laser printers, photocopiers, fax machines, are used in office without sufficient ventilation. For details, please refer to the IAQ leaflet entitled "Indoor Air Quality and You" published by the Environmental Protection Department (EPD).
Tel : (852) 3421-1501
Fax: : (852) 3005-4302
Web-site: www.iaqhk.com
E-mail : [email protected]
