Air Sampling Principles Involved in the Deposition Process of Airborne Pollen and Spores

There are various methods available for monitoring pollen in the atmosphere. Although a great number of sampling devices are in use, all operate on only a few basic principles mentioned below. Each principle has both merits and demerits and some are more suitable than others for collecting particles in the pollen size range.

The five basic sampling principles are:

1) Gravitational settling

2) Impaction

3) Suction

4) Grab sampling

5) Impinging

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