title: Identification of N-nitrosodimethylamine in ambient air by capillary gas-liquid chromatography mass spectrometry computer.
abstract: Organic vapors in ambient air, at or near an industrial site in Baltimore, Maryland, were collected by adsorption on a sorbent of porous polymer (Tenax GC, 35/60). The pollutants were recovered by thermal desorption and analyzed by gas-liquid chromatography mass spectrometry computer using capillary glass SCOT columns. N-Nitrosodimethylamine was identified from its mass spectrum as a constituent of the atmosphere in the areas sampled. The identification of this compound was confirmed by comparison of its mass spectrum with that of authentic N-nitrosodimethylamine; identical retention times of unknown and authentic compound on three different capillary columns were observed.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002853:Chromatography, Liquid; D003201:Computers; D004128:Dimethylnitrosamine / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D008396:Maryland; D009602:Nitrosamines / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D009602:Nitrosamines; D004128:Dimethylnitrosamine