engleski

Examination of microbiological air population in different conditions

It is known that the atmosphere is a very inappropriate medium for the life of microorganisms, because they neither grow nor reproduce in the air. However, they may enter the air in different ways. For example, various air currents can bring a multitude of microorganisms into the airspace. People can significantly contaminate the airspace by sneezing, coughing, spitting and even breathing, with their secretion droplets. Microorganisms can enter the airspace with dust particles, clothing, footwear etc. Most dust is generated by peeling and discarding of the human skin, so the microorganisms enter the airspace along with it. Appropriate temperature and humidity of the medium cause gathering of a large number of micro-organisms both in solid and liquid mediums and in the air. Therefore, this study sought to compare the quantity of bacteria and mold in the air in differently sized rooms, daily populated by different number of people, all under the influence of an associated daily temperature and relative humidity. The measurements were caried out once a month during the academic year 2014/2015. Significant statistical differences were found between the individual measurement results.

: microbiological population of air; contamination; aerobic mesophilic bacteria; molds

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