ADVANCED AIR TECHNOLOGIES
IMPROVING INDOOR ENVIRONMENT
Air Quality: Is There An Issue?
Humans can survive
few weeks without food,
few days without water and only few minutes without air.
intake of an average adult is:
1 - 1.2 kg food; 2 - 2.5 l water; and
15,000 - 18,000 l air.
Most of us are very careful when selecting what to eat and
DO WE CARE WHAT WE BREATHE?
Indoor Air Quality
In Nature the pollution caused by either human activities
(industry, cars, heating,cooking etc.), or by natural disasters (volcanos activities,
bush fires, dust storms, etc.) is "cleaned" by nature's forces like wind and
rain. However, these nature's forces can not help indoors, as modern buildings,
being designed primarily with energy conservation concerns in mind, often have
inadequate ventilation both in quantity and in quality. Limited intake of fresh
air can not "clean" the cocktail of particles from different size and origin
which present in the air indoors. As we don't want to use too much energy in
order to heat too much fresh air during the winter, neither to cool too much
fresh air during the summer, indoors we have recirculation of one and the same
According to U.S. Environmental Protection Agency and Australian Academy of
Science indoor air pollution can be many times higher than outdoor air
pollution. Indoor air has all outdoor pollutants from the local area, or so
called "criteria" pollutants including carbon monoxide, sulfur dioxide, nitrogen
dioxide, particulate matter, photochemical smog and lead. Apart of this indoor
air can have wide diversity of "other"
pollutants including big variety of chemical, biological and physical
Since people today spend most of their time indoors, and
indoor air is more polluted than outdoor air, improving indoor air quality is of
paramount importance as the quality of indoor air has significant impact on
people's health and wellbeing.
Till recently most of the public attention was focused on outdoor air quality.
Fixed site monitoring stations provide continuous data for "criteria"
pollutants, while there is no permanent data collection for the "other"
pollutants and also for indoor air pollution. Another difference between indoor
and outdoor air pollution is that the former is more constant than the later,
which depends in great degree on meteorological factors. Third difference is that
as individuals people have little control over the quality of outdoor air,
but much greater control over the quality of indoor air.
Evidence for Adverse Health Effects Caused by Air Pollution
There is plenty of
studies all over the world for
adverse health effects caused by exposure to polluted air, even
when exposure is at levels which are below current standards.
Sources of Air Pollution Indoors
Building materials, paint, carpet, furniture
HVAC systems (heating, ventilation and air conditioning)
Cleaning materials, pesticides from pest management
Pollutants from the outdoor air
Conventional vacuum cleaners
Types of Air Pollution Indoors
Volatile Organic Compounds (VOCs) have been identified in indoor air. (Ref 22)
over 400 species mould fungi and 30 types of mites
23, 24, 25, 26)
particulate matter of different size and origin like
dust, pollen, exhaust from engines and combustion, etc.
from pollutants: exposure to combination of
more pollutants in one place is associated with increased occurrence of
all symptoms and adverse health effects are
registered even at very low levels of pollution.
Health Effects from Exposure to Indoor Air Pollution
Short-term exposure effects:
irritation of eyes, nose, throat, skin;
sneezing; stuffy or runny nose;
nausea, headache, lethargy, weakness
concentration difficulties, fatigue, memory impairment;
27, 28, 29, 22, 23,
24, 25, 26, 30, 33, 34, 35, 36, 37, 38)
Long-term exposure effects:
Options to Solve the Problems Caused by Indoor Air Pollution
Visiting your Doctor
Visiting your Pharmacist
Air Purifier for
targeting the cause
Approaches to the Problems Caused by Indoor Air Pollution
Implementing our air purifier improves the quality of indoor air by significantly
reducing the number of particles polluting the air indoors. This may improve people's health and wellbeing, may reduce sick leave days
and may improve productivity of the staff.
For more information
Department of the Environment and Heritage
U.S. Environmental Protection Agency
US Indoor Air Quality Association
American Lung Association
World Health Organization
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