HPLC Separation of Fungicides in a Green Tea Matrix

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Chromatogram

Description

Even though teas are known for containing polyphenols such as catechins, flavonoids and theaflavins, SIELC mixed-mode columns can be used to analyze a matrix from a commercial tea and retain target compounds. In this method, green tea was spiked with 0.005mg/ml of pesticides previously found in teas. Primesep 200 was used for it’s reverse-phase and acidic ion-pairing groups. Target compounds were retained and resolved from the majority of the tea matrix peak.

Method Parameters

Mobile PhaseMeCN/H2O – 50/50%
BufferH3PO4 – 0.05 %
Flow Rate1.0 ml/min
DetectionUV, 270 nm
Class of CompoundsDrug, Statin, Hydrophobic, Ionizable
Analyzing CompoundsAtorvastatin, Picoxystrobin, Pyrimethanil, Lipitor

HPLC Column Used

Primesep 200, 4.6×150 mm, 5 µm, 100A