Biparametric potentiometric analytical microsystem for nitrate and potassium monitoring in water recycling processes for manned space missions

Antonio Calvo-López, Eva Arasa-Puig, Mar Puyol, Joan Manel Casalta, Julián Alonso-Chamarro

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

The construction and evaluation of a Low Temperature Co-fired Ceramics (LTCC)-based continuous flow potentiometric microanalyzer prototype to simultaneously monitor the presence of two ions (potassium and nitrate) in samples from the water recycling process for future manned space missions is presented. The microsystem integrates microfluidics and the detection system in a single substrate and it is smaller than a credit card. The detection system is based on two ion-selective electrodes (ISEs), which are built using all-solid state nitrate and potassium polymeric membranes, and a screen-printed Ag/AgCl reference electrode. The obtained analytical features after the optimization of the microfluidic design and hydrodynamics are a linear range from 10 to 1000mgL-1 and from 1.9 to 155mgL-1 and a detection limit of 9.56mgL-1 and 0.81mgL-1 for nitrate and potassium ions respectively. © 2013 Elsevier B.V.
Original languageEnglish
Pages (from-to)190-196
JournalAnalytica Chimica Acta
Volume804
DOIs
Publication statusPublished - 4 Dec 2013

Keywords

  • Lab on a chip
  • Low temperature co-fired ceramics technology
  • Miniaturization
  • Nitrate
  • Potassium
  • Potentiometric detection

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