Potentiometric titrations in a poly(dimethylsiloxane)-based microfluidic device |
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Authors: | Ferrigno Rosaria Lee Jessamine Ng Jiang Xingyu Whitesides George M |
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Affiliation: | Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA. |
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Abstract: | This paper describes a microfluidic device, fabricated in poly(dimethylsiloxane), that is used for potentiometric titrations. This system generates step gradients of redox potentials in a series of microchannels. These potentials are probed by microelectrodes that are integrated into the chip; the measured potentials were used to produce a titration curve from which the end point of a reaction was measured. |
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