Microfluidic supported liquid membrane extraction [An article from: Analytica Chimica Acta]

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Description:
Miniature, microfluidic devices have been designed and fabricated for the enrichment of haloacetic acids in water. The analytical approach is based on supported liquid membrane (SLM) extraction followed by direct HPLC-UV detection without any derivatization. Channel dimensions and the flow rates affected enrichment factors and extraction efficiencies. Enrichment factors as high as 54 were obtained on a 2cmx2cm extraction module. Large linearity ranges with good linearity, high precisions and detection limit as low as 2ng/mL were obtained.