Zn and Na Quantitation in Drug Substances
Primesep 100 allows the quantitation of sodium and zinc cations in a drug product sample. The cations are retained by cation exchange and the drug product is retained by hydrophobic, reversed-phase mechanisms. The separation uses a mobile phase mixture of water, acetonitrile (MeCN, ACN) and trifluoroacetic acid (TFA) with evaporative light scattering detection (ELSD) and UV detection.
Methodenparameter
| Column | Primesep 100, 4.6×250 mm, 5 µm, 100 Å |
|---|---|
| Mobile Phase | MeCN/H2O |
| Buffer | TFA |
| Flow Rate | 1.0 mL/min |
| Detection | ELSD50C |