Biomedical Engineering Reference
In-Depth Information
Fig. 2
Corticosteroid recovery by SPE extraction as a function of solvent composition. Solvents
used in the Wash-2 step were composed of 0.1 % formic acid and the indicated solvent composi-
tion. Corticosteroid recovery vs. solvent composition is shown for the following conditions:
(
a
) SPE cartridges were washed respectively with a range of 20-65 % methanol and eluted with
100 % methanol; (
b
) SPE cartridges were washed with 5 % methanol and eluted respectively with
60-100 % methanol (Reproduced with permission from American Chemical Society)
