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Issue 12, 2010
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Attenuated total reflection Fourier transform infrared spectroscopy for on-chip monitoring of solute concentrations

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Abstract

We report a cost-efficient Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR) method for monitoring concentrations of solutes in solutions flowing through microfluidic channels. The method allows rapid acquisition of spectra and enables chemical characterisation and concentration measurements that are independent of the flow rate of liquids. The method enables independent measurement of concentrations of solutes with distinct spectral features in mixed solutions. For the polymer solutes studied in the present work, the method has a sensitivity of at least 10 µM (0.01 wt%). We also propose the applicability of the method for the differentiation between dissolved and adsorbed amphiphilic species.

Graphical abstract: Attenuated total reflection Fourier transform infrared spectroscopy for on-chip monitoring of solute concentrations

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Publication details

The article was received on 27 Jan 2010, accepted on 26 Feb 2010 and first published on 08 Apr 2010


Article type: Paper
DOI: 10.1039/C001889A
Citation: Lab Chip, 2010,10, 1561-1566
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    Attenuated total reflection Fourier transform infrared spectroscopy for on-chip monitoring of solute concentrations

    J. Greener, B. Abbasi and E. Kumacheva, Lab Chip, 2010, 10, 1561
    DOI: 10.1039/C001889A

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