HPLC Separation of Bromoacetic and Chloroacetic acids on Newcrom B Column

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Chromatogram

Description

High Performance Liquid Chromatography (HPLC) Method for Analysis of Bromoacetic acid , Dibromoacetic acid , Dichloroacetic acid , Trichloroacetic acid .

Bromo – and chloro – acetic acids are widely used in organic chemistry.  Their similar structure makes the acids difficult to retain and separate on reverse-phase HPLC columns.  By using Newcrom BH mixed-mode column which also has ion-exchange properties, the separation can be achieved with a simple isocratic method and relatively short time with a mobile phase of acetonitrile (ACN), water and sulfuric acid (H2SO4) buffer.

Method Parameters

Mobile PhaseMeCN/H2O – 10/90%
BufferAmFm pH 3.0
Flow Rate1.0 ml/min
DetectionCAD
Class of CompoundsAcid
Analyzing CompoundsBromoacetic acid,Dibromoacetic acid,Dichloroacetic acid,Trichloroacetic acid

HPLC Column Used

Newcrom B, 4.6 x 150 mm, 5 µm, 100 A, dual ended