| Common indoor air pollutants |
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Pollutant |
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Sources |
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Improvement Measures |
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Carbon dioxide
(CO2) |
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Exhalation from people |
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Ensure sufficient fresh air supply |
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Carbon monoxide
(CO) |
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Gas burning |
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Provide local exhaust |
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Ozone (O3) |
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Photocopying
machine |
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Use photocopying machine with built-in ozone filter |
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Formaldehyde
(HCHO) |
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Furnishing
materials or furniture |
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Air-out furniture |
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Radon (Rn) |
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Building material containing granite |
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Apply wall paper |
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Nitrogen dioxide (NO2) |
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Gas burning |
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Provide local exhaust |
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Total volatile
organic compounds (TVOC) |
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Solvent-based paint |
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Use water-based paint |
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Respirable Suspended Particulates (RSP) |
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Dust |
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Use Air Filter |
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Environment
tobacco smoke (ETS) |
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Smoking |
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Adopt no-smoking policy |
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Airborne bacteria |
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Dirty air filter |
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Clean/replace filter regularly |