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Glossary 

This glossary provides definitions of common terms used in the context of air pollution.

You can navigate quickly to a term using the alphabetic links below; clicking on the terms will show their definition.



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  • FDMS
    The Filter Dynamics Measurement System (FDMS) monitors the core and volatile fractions of airborne particulate matter. The instrument is based on TEOM technology, measuring the mass of particles collected on a filter, whilst also accounting for loss of semi volatile material. The FDMS records gravimetric equivalent particulate data. Measurements recorded in the UK by the instruments are now used in the Volatile Correction Model (VCM) to correct TEOM measurements for the loss of volatile components of particulate matter that occur due to the high sampling temperatures employed by the instrument.

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Page last modified: 14 February 2011