title: Determination of amines and quaternary ammonium ions as complexes with picrate. 3. Relations between extraction constants and the nature of the cation and of the organic phase.
mesh_terms: D000588:Amines / Q000032:analysis*; D002626:Chemistry, Pharmaceutical; D007477:Ions; D010851:Picrates / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis*
chemical_list: D000588:Amines; D007477:Ions; D010851:Picrates; D000644:Quaternary Ammonium Compounds