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Chromatogram

Description

Benfluralin is a dinitroaniline herbicide used on grasses and weeds. The EURL (European Union Reference Laboratory) included benfluralin in a study using a multiresidue method by GC-MS/MS in olive oil. Obelisc R was used to separate benfluralin and its impurities using a single multiresidue method, which can be used for many pesticides. Obelisc R contains embedded ionic and hydrophobic groups which can assist in fine tuning. Method is LC/MS compatible and can be used as a general approach for analyzing benfluralin and dozens of other pesticides.

Method Parameters

Mobile PhaseGradient MeCN – 10-70%, 15 min,  7 min hold
BufferGradient AmAc pH 4.5- 20-50 mM, 15 min,  7 min hold
Flow Rate0.4 ml/min
DetectionUV, 250 nm
Class of CompoundsInsecticide, Herbicide, Fungicide,  Hydrophobic, Ionizable
Analyzing CompoundsBenfluralin

HPLC Column Used

Obelisc R, 2.1×150 mm, 5 µm, 100A