The double K+/Ca2+ sensor based on laser scanned silicon transducer (LSST) for multi-component analysis

Yu Ermolenko, T. Yoshinobu, Yu Mourzina, K. Furuichi, S. Levichev, M. J. Schöning, Yu Vlasov, H. Iwasaki

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

In the present work a double ion sensor based on a laser scanned semiconductor transducer (LSST) for the simultaneous determination of K+- and Ca2+ -ions in solutions has been developed. Specially elaborated ion-sensitive membrane compositions based on valinomycin and calcium ionophore calcium bis[4-(1,1,3,3-tetramethylbutyl)phenyl] phosphate (t-HDOPP-Ca) were deposited as separate layers on a silanized surface of the Si/SiO2/Si3N4-transducer. The proposed multi-sensor exhibits theoretical sensitivities and the detection limits of the sensor were found to be 2 x 10-6 mol 1-1 for K+ and 5 x 10-6 mol 1-1 for Ca2+. The elaborated double sensor is proposed for the first time as a prototype of a new type of multi-sensor systems for chemical analysis.

Original languageEnglish
Pages (from-to)785-795
Number of pages11
JournalTalanta
Volume59
Issue number4
DOIs
Publication statusPublished - 2003 Mar 10
Externally publishedYes

Keywords

  • Double sensor
  • Laser scanned semiconductor transducer (LSST)
  • Potassium and calcium selectivity
  • Solvent-polymeric membrane

ASJC Scopus subject areas

  • Analytical Chemistry

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