Potentiometric sensing utilizing paper-based microfluidic sampling

Jingwen Cui, Grzegorz Lisak, Sylwia Strzalkowska, Johan Bobacka

    Research output: Contribution to journalArticleScientificpeer-review

    49 Citations (Scopus)


    A new approach to potentiometric sensing utilizing paper-based microfluidic sampling is studied in this work. A solid-contact ion-selective electrode and a solid-contact reference electrode are pressed against a filter paper into which the sample solution is absorbed. The filter paper acts simultaneously as a sampling unit and as a sample container during potentiometric sensing. The paper substrates containing standard and sample solutions are disposable, while the sensors are used multiple times. The analytical method presented here opens new possibilities for economically and ecologically sound measurements of ions in various samples.
    Original languageUndefined/Unknown
    Pages (from-to)2133–2136
    Number of pages4
    Issue number9
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

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