By Marzenna R Dudzińska
As a result of alterations in way of life, humans spend extra time interior. This refers not just to the time spent at domestic and at workplace premises, but in addition in purchasing department shops, game facilities and shipping automobiles. Concentrations of many toxins are larger interior than they're outdoor. therefore, the indoor setting has a much bigger influence on human wellbeing and fitness, health and effectiveness. Indoor surroundings Engineering is a rather new clinical self-discipline with an interdisciplinary personality, utilizing wisdom from chemistry, biology, medication and engineering. because the early Nineties, the variety of st. Read more...
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Extra info for Management of indoor air quality
2008. Occupation, thermal condition and aerosol particle number concentration in a lecture room. XII International Conference on Air Conditioning Air Protection & District Heating, Wroclaw, 439–444. Połednik, B. R. 2010. Ventilation control based on the CO2 and aerosol concentration and perceived air quality measurements – a case study. Archives of Environmental Protection 36: 67–80. , Raczkowski, A. & Dumała S. 2007. Aerosol particle concentration and the thermal conditions in a lecture room. , Dudzinska, M.
Air samples were collected using a six stage Andersen impactor with agar plates at four sites: outdoor next to the fresh air inlet, supply duct, the central zone of the vacant auditorium and the exhaust duct for heterotrophic bacteria, staphylococci and fungi count. Periodical switch off of the air conditioning caused an increase of humidity and the mould content in the supply duct; its activation reduced the air quality in the auditorium and air supply system. The bacteria content in auditorium air was more the result of human activity than outdoor air quality.
27 Figure 7. Agar). Particle size (µm) distributions of viable fungi in the air supply system of auditorium (Sabourand 28 • Most of the bacterial isolates from the auditorium and supply ducts air belonged to genera Micrococcus and Bacillus but Staphylococcus and Actinomyces were also present. • Among fungi isolated from both outdoor and indoor air the genera: Cladosporium, Aspergillus and Penicillium, dominated. ACKNOWLEDGEMENTS This study was supported by project PB 4955/T02/2008/34, financed by the Polish Ministry of Science and Higher Education.