title: N-nitrosodimethylamine an ambient air. Analytical method.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D002849:Chromatography, Gas; D004128:Dimethylnitrosamine / Q000032:analysis*; D013058:Mass Spectrometry; D008722:Methods; D009602:Nitrosamines / Q000032:analysis*
chemical_list: D009602:Nitrosamines; D004128:Dimethylnitrosamine