Abstract
AEROBIOLOGISTS have developed various sampling techniques for investigating the concentration of airborne pollen and spores. The methods have been summarized by P. H. Gregory1. The gravity sedimentation methods on slides and Petri dishes have been superseded mainly by methods of sampling by impaction and allowing a quantitative estimation of the airspora for a given quantity of air. The two main principles of sampling by impaction are to move an object through air on a rotating device, that is, Rotorod sampler2,3, or to draw the air by pumps, fans or aspirators through niters or on to slides. So far as I know none of the impaction methods trap spores by inspiration although such devices might give the nearest estimations of the number of particles inhaled. In these experiments air is drawn through the filter of a respiratory mask.
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References
Gregory, P. H., The Microbiology of the Atmosphere (Leonard Hill (Books), Ltd., London; Interscience Pub., Inc., New York, 1961).
Carter, M. V., Rep. Rothamsted Exp. Sta., 1960, 125 (1961).
Perkins, W. A., Second Semi-Ann. Rep., Aerosol Lab., Dept. Chem. and Chem. Eng., Stanford Univ., C.M.L.186 (1957).
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MAUNSELL, K. Trapping the Airspora by Inhalation. Nature 194, 703–704 (1962). https://doi.org/10.1038/194703a0
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DOI: https://doi.org/10.1038/194703a0
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