Planar waveguide ion-selective sensors

K. Tóth, G. Nagy, Bui Thi Thu Lan, Judit Jeney, Steven J. Choquette

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A potassium ion-selective planar waveguide total internal reflection (TIR) mode optical sensor was prepared for flow injection application by casting thin film optode membranes onto a glass substrate. For this sensor, a potassium selective ionophore is incorporated in plasticized polyvinyl chloride film sensitized with a hydrogen selective ionophore. The sensor response to potassium ion is determined by measuring the attenuation of a HeNe laser propagated in this thin film device. The laser was coupled into and out of the sensor using grating couplers providing an inexpensive, environmentally stable sensor. The sensitivity of the waveguide based flow injection device is approximately 0.05 mM K+, while the rate of analysis is about 180 samples per hour.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalAnalytica Chimica Acta
Volume353
Issue number1
DOIs
Publication statusPublished - Oct 20 1997

Fingerprint

Planar waveguides
Potassium Ionophores
Potassium
Ions
sensor
Equipment and Supplies
Injections
Gas Lasers
ion
Ionophores
Sensors
Polyvinyl Chloride
potassium
Glass
Hydrogen
Lasers
Thin film devices
laser
Membranes
Optical sensors

Keywords

  • Ion-selective sensors
  • Optical sensors
  • Sensors
  • Total internal reflection

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

Planar waveguide ion-selective sensors. / Tóth, K.; Nagy, G.; Lan, Bui Thi Thu; Jeney, Judit; Choquette, Steven J.

In: Analytica Chimica Acta, Vol. 353, No. 1, 20.10.1997, p. 1-10.

Research output: Contribution to journalArticle

Tóth, K. ; Nagy, G. ; Lan, Bui Thi Thu ; Jeney, Judit ; Choquette, Steven J. / Planar waveguide ion-selective sensors. In: Analytica Chimica Acta. 1997 ; Vol. 353, No. 1. pp. 1-10.
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