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Influence of the make-up solvent on the MS detection in SFC-MS.
| Entry | make-up solvent composition | additional ion m/z (theoretical) |
adduct formed m/z (theoretical) |
ion found |
|---|---|---|---|---|
| 1 | MeOH:H2O (9:1, v:v) +0.1% HCOOH |
HCOO− 45.0 |
[M + HCOO−]- 325.0 |
324.9 |
| 2 | MeOH:H2O (9:1, v:v) +0.1% CH3COOH |
CH3COO− 59.0 |
[M + CH3COO−]- 339.0 |
339.0 |
| 3 | MeOH:H2O (9:1, v:v) +0.1% NH4OH |
CH3OCOO− 75.0 |
[M + CH3OCOO−]-355.0 | 355.0 |
