Wet effluent diffusion denuder technique and the determination of volatile organic compounds in air: II. Monoterpenes

The wet effluent diffusion denuder technique (WEDD), for the determination of α- and β-pinenes, S-limonene, α-phellandrene, camphene and Δ3-carene in air has been tested. These monoterpenes were continuously preconcentrated into a thin film of methanol (ethanol, 1-propanol and heptane) flowing down the inner wall of the cylindrical wet effluent diffusion denuder. The concentrates were analyzed by GC–FID and GC–MS, respectively.