title: Paper and thin-layer electrophoretic separations of polynuclear aza heterocyclic compounds.
mesh_terms: D000397:Air Pollution; D004586:Electrophoresis; D005470:Fluorometry; D006571:Heterocyclic Compounds; D012822:Silicon Dioxide
chemical_list: D006571:Heterocyclic Compounds; D012822:Silicon Dioxide