| Abstract [eng] |
Ozone (O3) is a colourless and odourless, highly unstable gas that is a serious cause of air quality problems. In recent years, there has been a significant increase in public concern about poor indoor air ventilation. Indoor ozone is emitted mainly by photocopiers, laser printers, ozone generators and other electrical appliances. Indoor ozone is also generated by discharges from electrostatic air cleaners. Photocopiers are considered to be an important tool in educational establishments and commercial work offices. Some studies show that the operation of photocopiers and laser printers produces high levels of volatile organic compounds (VOCs), formaldehyde and ozone, which are detrimental to indoor air quality. The quality and quantity of emissions are determined by the technical process, the type of ink and paper used, the model and age of the equipment, maintenance and environmental conditions. Ozone is associated with adverse health effects, but less is known about vulnerable/sensitive populations for whom even low concentrations of ozone can be dangerous. The findings suggest that people of a certain age, especially the elderly, are very sensitive to short-term exposure to ozone. High levels of ozone lead to adverse respiratory effects, breathing difficulties, shortness of breath, pain on deep inhalation and inflammation of the airways. These effects can aggravate lung diseases such as asthma, emphysema and chronic obstructive pulmonary disease (chronic bronchitis). |
