HPLC Determination of Caffeine, Theophylline and Theobromine in Tea on Primesep SB Column

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Chromatogram

Method Parameters

Mobile PhaseEtOH – 10%
BufferH3PO4 – 0.3%
Flow Rate0.5 ml/min
DetectionUV, 270 nm
Class of CompoundsXanthine, Hydrophobic, Ionizable
Analyzing CompoundsTheophylline,Theobromine,Caffeine

HPLC Column Used

Primesep SB, 3.2 x 100 mm, 5 µm, 100 A, dual ended