Capacitive deionization on-chip; desalination of small volume samples

Susan Helena Roelofs, M. van Rooijen, B. Kim, J. Han, Albert van den Berg, Mathieu Odijk

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    This abstract demonstrates, for the first time, capacitive deionization (CDI) inside a chip measured using impedance spectroscopy [1]. CDI is a promising technique for the pre-treatment of extremely small volume protein samples (nL range) before analysis by mass spectroscopy [2]. The results included in this abstract are two-fold; (1) validation of our device and measurement method on the macro-scale and (2) proof-of-principle measurements using a microfluidic chip under flow conditions. We demonstrate desalination up to ~25%. Moreover, we show that capacitive desalination is a localized process, mainly taking place in close proximity of the electrode [3].
    Original languageUndefined
    Title of host publication18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
    Place of PublicationSan Diego
    PublisherChemical and Biochemical Society
    Pages1268-1270
    Number of pages3
    ISBN (Print)978-0-9798064-7-6
    Publication statusPublished - 26 Oct 2014
    Event18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 - Henry B. Gonzalez Convention Center, San Antonio, United States
    Duration: 26 Oct 201430 Oct 2014
    Conference number: 18

    Publication series

    NameMicroTAS 2014
    PublisherChemical and Biochemical Society
    ISSN (Print)1556-5904

    Conference

    Conference18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014
    Abbreviated titleMicroTAS 2014
    CountryUnited States
    CitySan Antonio
    Period26/10/1430/10/14

    Keywords

    • EWI-25599
    • METIS-309831
    • IR-93704

    Cite this

    Roelofs, S. H., van Rooijen, M., Kim, B., Han, J., van den Berg, A., & Odijk, M. (2014). Capacitive deionization on-chip; desalination of small volume samples. In 18th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2014 (pp. 1268-1270). (MicroTAS 2014). San Diego: Chemical and Biochemical Society.