12.3 A COMPARISON OF COUNTING METHODS FOR HOURLY AIRBORNE SPORE CONCONTRATIONS.
Lora A. Lindley-Settlemyre(1) and Estelle Levetin (2), 1University of Arkansas, 2University of Tulsa, Tulsa OK.
Outdoor air sampling for pollen and fungal spores is commonly done
with the Burkard Volumetric Spore Trap. Because counting the entire
slide surface is impractical for routine monitoring, two counting
methods are generally used: the single longitudinal traverse method
(SLM) and the twelve transverse traverse method (TTM). SLM is fast
and provides a good approximation of the average daily spore concentration.
TTM takes more time, however, it gives a better approximation of the
average daily spore concentration and senses diurnal rhythm. TTM is
usually considered too time consuming for routine use.
Last updated: March 3, 2011