Laboratory investigation of annular denuders as sampling system for the determination of aliphatic primary and secondary amines in stack gas

A method for the sampling and analysis of aliphatic amines ranging from C₁ to C₅ and some diamines in exhaust gas is described. Two different annular denuder systems coated with phosphoric acid were used for the laboratory investigation of sampling gaseous amines. The denuder sampling systems were tested under different conditions for their readiness to work in stack gas. The reagent 2,4-dinitrofluorobenzene (DNFB) was used in pre-column derivatization of the amines investigated. The amino derivatives were separated using high performance liquid chromatography (HPLC) in conjunction with UV-detection. This method has been used for the examination of emissions from a landfill waste disposal and from animal husbandry with respect to traces of aliphatic amine emissions.