Aminobiphenyls consist of isomers that differ only in the location of a primary amine group on an aromatic ring. 2-, 3-, and 4-aminobiphenyl are separated on a Primesep D with good peak shape and a short retention time by a mixture of reversed-phase and ion-exclusion interactions. Peak order can be reversed for 2- and 3-aminobiphenyls by using ammonium formate buffer without pH adjustment. The HPLC separations use a mobile phase of water, acetonitrile (MeCN, ACN), ammonium formate buffer or acetic acid (HOAc) with UV detection at 250 nm.
| Column | Primesep D, 4.6x150 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O - 5/95% |
| Buffer | AmAc pH 5.0 15 mM |
| Flow Rate | 1.0 ml/min |
| Detection | UV, 250 nm |
| Class of Compounds | Hydrophobic, Ionizable |
| Analyzing Compounds | 2-Aminobiphenyl, 4 -Aminobiphenyl, 3 -Aminobiphenyl |
Application Analytes:
2-Aminobiphenyl
3-Aminobiphenyl
4-Aminobiphenyl