Wet preconcentration techniques for 'real time' determination of gaseous pollutants in ambient air

摘要

The principle of mass transfer analytes in the wet effluent diffusion denuder (WEDD) and the aerodispersive enrichment unit (AEU) is explained. The spirits of WEDD and AEU are discussed in details and the application of these wet preconcentration techniques for "real time" determination of gaseous pollutants in ambient air, which are concerned of our long-time interest, is documented.