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Abstract
A wide variety of analytical techniques can be applied for the determination of trace components of air. Usually, a direct determination of analytes in an air sample is impossible, and a need arises to employ suitable techniques of their isolation and preconcentration, prior to the final determination stage. Any of these techniques may be included into one of the following, basic groups: • dynamic techniques • passive techniques • denudation techniques. For several years, a rapid growth of interest in the denudation techniques has been observed, although their theoretical principles had been known long before, because they facilitate the studies in the physical speciation analytics. The objective of this paper is • presentation of the theoretical principles of denudation techniques, • discussion of the major practical constructions of denuders, • reviewing current range of applications of these techniques.