Abstract
Abstract The formation of N-nitrosodimethylamine (DMN) from dimethylamine (DMA) in the presence of ozone, NOx, NO, NO2 and humidity was evaluated for the sorbent, Tenax GC under conditions relevant to field sampling. Traces (<30 ppt) of DMN were formed from DMA when using a sampling cartridge containing Tenax GC held by glass wool plugs preceded by a glass fiber filter and high atmospheric concentrations of NO, NO2 and O3. However, the trace levels of DMN do not hamper the use of the Tenax GC cartridge sampler for ambient air sampling.
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