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. . . 4. Gradient elution method. . For separation of a sample containing many components. . . Advantage of gradient elution method. A. A. A. B. B. B. *. *. Finepak SIL C18MeOH/1% AcOH(40/60). MeOH/1% AcOH(30/70). MeOH/1% AcOH 30/70?45/55 Linear Gradient?16min. A : Chlorogenic acidB : Rutin* : Impurity.
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