Capillary electrophoresis and sample stacking in non-aqueous media for theanalysis of priority pollutant phenols

Non-aqueous capillary electrophoresis was applied to the separation of phen ol derivatives included in the US Environmental Protection Agency list of p riority pollutants and European Union directive 76/464/EEC concerning dange rous substances discharged into the aquatic environment. Best results were obtained with 60 mM ammonium acetate solution in acetonitrile-0.1 M KOH met hanolic solution-acetic acid (74:25:1) as running buffer. A significant sen sitivity enhancement was observed when field-amplified sample stacking in n on-aqueous media was assayed for the study of low concentrated samples. (C) 1999 Elsevier Science B.V. All rights reserved.