Abstract
In order to facilitate the determination for extremely small amount of amine content in a lot of samples from the ambient air eliminating the preliminary concentrating procedure, the analysis method for monomethylamine (MMA), dimethylamine (DMA) and trimethylamine (TMA) consisting of the headspace method and the sampling method which amine component is collected on the filtering paper impregnated with sulfuric acid has been examined.
In this study, both gas chromatographic separation of amines and analytical sensitivity are improved.
Detection limit of MMA, DMA and TMA in 25l air sample are 5 ppb (v/v), 1 ppb (v/v) and 0.4 ppb (v/v), respectively.
Each coefficient of variation for head space analysis of MMA, DMA and TMA are 25.9%, 18.7% and 9.3%.
