title: Rapid estimation of trace amounts of ethylenimine by high-pressure liquid chromatography.
abstract: A rapid procedure utilizing high-pressure liquid chromatography is described for determining trace quantities of ehtylenimine down to 0.01 ppm. The basis for the method is the quantitative reaction of ethyleneimine with the 1,2-naphthoquinone-4-sulphonate ion (Folin's reagent) to give 4-(1-aziridinyl)-1,2-naphthoquinone. Compared with the spectrophotometric procedure, this method provides a high degree of specificity and sensitivity. The method has been employed to determine ethylenimine in the pyrolysis products of polyethylenimine.
mesh_terms: D001388:Aziridines / Q000032:analysis*; D001389:Azirines / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D007202:Indicators and Reagents; D008722:Methods; D011094:Polyethyleneimine / Q000032:analysis* / Q000633:toxicity; D011095:Polyethylenes / Q000032:analysis*
chemical_list: D001388:Aziridines; D001389:Azirines; D007202:Indicators and Reagents; D011095:Polyethylenes; D011094:Polyethyleneimine