additional 50mL ethyl acetate/n-heptane was used to elute the target analytes through 4 g Florisil packed in the external glass column, even though the same amount of solvent was utilized in the extraction step
additional 50mL ethyl acetate/n-heptane wasused to elute the target analytes through 4 g Florisil packed inthe external glass column, even though the same amount of solventwas utilized in the extraction step