Lithium sensor based on the laser scanning semiconductor transducer

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

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

A lithium-selective polymeric membrane has been immobilised on the surface of a semiconductor transducer. This light-addressable potentiometric sensor (LAPS) with the induced lithium selectivity has been prepared with the aim at further development of a Li+ assay in liquid media, including biological fluids. The sensor developed exhibits Nernstian response interval of 10-5 to 10-1moll-1 with an ionic sensitivity of (58±1)mV/pLi. The detection limit was found to be (3±1)×10-6moll-1 Li+. The sensor has high selectivity for lithium over sodium and potassium ions with selectivity coefficients of KLi/NaPOT=(7±2)×10-3 and KLi/KPOT=(5±1)×10-3, respectively, and a response time of less than 30s.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalAnalytica Chimica Acta
Volume459
Issue number1
DOIs
Publication statusPublished - 2002 May 17
Externally publishedYes

Keywords

  • Ionophore
  • Light-addressable potentiometric sensor
  • Lithium sensitivity
  • Polymeric membrane

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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