title: [Gas chromatographic determination of N,N-asymmetric dimethylhydrazine in different environmental objects].
abstract: The paper describes different guidelines used to develop a procedure for gas chromatographic determination of N,N-asymmetric dimethylhydrazine (NDMH) in various environmental objects in the area of a missile-dismantling base. The authors showed that the use of a capillary column with a 5-microm liquid phase layer on a Kristall-5000 chromatograph with a nitrogenous phosphoric detector (Russia) allowed development of a unified gas chromatographic procedure for determining NDMH in air, water, soil, biological material (urine), and plant cover (moss, couch-grass). The procedures differ in the way how to prepare samples and the analysis itself is based on conversion of NDMH to N,N-dimethylhydrazone-4-nitrobenzaldehyde, its liquid extraction from water, concentration of the extract via evaporation and assay by the internal standard test.
authors.forename: L V
authors.initials: LV
authors.lastname: Kuznetsova
authors.forename: G I
authors.initials: GI
authors.lastname: Egorova
authors.forename: A A
authors.initials: AA
authors.lastname: Mironov
mesh_terms: D019813:1,2-Dimethylhydrazine / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D006801:Humans; D012426:Russia
chemical_list: D019813:1,2-Dimethylhydrazine