title: Direct gas chromatographic analysis of cyclic N-nitrosamines.
abstract: A rapid gas chromatographic technique has been developed for quantitative estimation of cyclic N-nitrosamines. Cumbersome clean-up procedures are unnecessary and quantitative estimation can be done by injecting hexane extract without further pretreatment. The detection limit for the procedures is ca. 0.5 ng.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D003500:Cyclization; D005504:Food Analysis; D008832:Microchemistry; D009602:Nitrosamines / Q000032:analysis*; D010880:Piperidines / Q000032:analysis; D011759:Pyrrolidines / Q000032:analysis
chemical_list: D009602:Nitrosamines; D010880:Piperidines; D011759:Pyrrolidines