Abstract
The reversed phase behaviour of high molecular mass polystyrenes was investigated on C18 bonded phase columns with ethyl acetate-methanol and ethyl acetateacetonitrile mobile phases. The results are compared with the corresponding dichloromethane mobile phases. The ethyl acetate-methanol mobile phase showed anomalous elution behaviour, similar to other previously investigated solvent combinations with methanol. The ethyl acetate-acetonitrile mobile phase showed no anomalous behaviour, increased retention and, elution over a wider composition range compared with the dichloromethane-acetonitrile system. However, resolution between adjacent molecular masses was considerably worse.
| Original language | English |
|---|---|
| Pages (from-to) | 663-667 |
| Number of pages | 5 |
| Journal | Chromatographia |
| Volume | 39 |
| Issue number | 11-12 |
| DOIs | |
| Publication status | Published - Dec 1994 |
| Externally published | Yes |
Keywords
- Column liquid chromatography
- Dichloromethane
- Ethyl acetate
- Polystyrene
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