Simultaneous Determination of Br- and I- with a Multiple Fiber-Optic Fluorescence Sensor

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A dual fiber-optic sensor for the simultaneous determination of bromide and iodide is successfully demonstrated. The device is based upon the dependence of quenching effects on individual fluorophores (quinine and harmane) and quenchers (bromide and iodide). From the point of view of practical application, n unknown analyte species should be able to be determined with a sensor array which contains n sensor elements on which n fluorophores are immobilized. The relative error of the new sensors for the determination of bromide and iodide is less than 5%. The sensor combination is reversible and exhibits an several ions on the sensors has been studied.

Keywords: Fiber-optic sensor; Halide ions

Document Type: Research Article


Affiliations: 1: Department of Chemistry, Indiana University, Bloomington, Indiana 47405 2: Department of Chemistry, Indiana University, Bloomington, Indiana 47405; present address: Department of Chemistry, State University of New York at Buffalo, Buffalo, NY 14214

Publication date: January 1, 1990

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