Viable Microorganisms in an Urban Atmosphere
Open Access
- 1 May 1969
- journal article
- research article
- Published by Taylor & Francis in Journal of the Air Pollution Control Association
- Vol. 19 (5) , 337-341
- https://doi.org/10.1080/00022470.1969.10466496
Abstract
The microbial population (types and numbers) of a vertical profile of air in an industrial area of the Twin Cities was determined between May and November 1967. No consistent relationships could be shown to exist between the microbial contamination and the meteorological parameters concurrently measured. The mean viable counts ranged from 58/ft3 at grade level to 22/ft3 at 500 ft. Regardless of altitude, molds constituted approximately 70% of the total airborne microflora, bacteria between 19 and 26%, and yeasts and actinomycetes the remainder. The particle size with which the viable population was associated showed a consistent peak in the 3 – 5 μ range.Keywords
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