The penetration of airborne chemicals into a collection medium, such as impinger fluid, where the chemicals will dissolve or react chemically.

The collection of gases and vapours onto the surface of a collection medium such as the sorbent material in sorbent tubes.

A description of the shapes and densities of dust particles; the diameter of a unit-density sphere having the same settling velocity as the particle in question.

Microscopic liquid or solid particles dispersed into the air.

The total amount of air passed through a sampling medium; determined by multiplying flow rate in ml/min or L/min by the sample time in minutes.

Air that is external to buildings and accessible to the general public.

Airborne particles, molecules, or volatile compounds ranging in size from 100 microns to 0.01 um that are living, contain living organisms, or were released from living organisms.

The concentration that should not be exceeded during any part of the working day.

A group of lung conditions (diseases) that make it difficult to empty the air out of the lungs. Heavy exposure to certain dusts at work, chemicals and indoor or outdoor air pollution can contribute to [..]

A sampling device used to collect and separate respirable particulate mass. The cyclone functions as a centrifuge; the rapid circulation of air separates particles according to size.