A Chalcogenide Glass Electrode Sensitive to Cupric Ions

1 January 1974

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 121 (3) , 363-370
https://doi.org/10.1149/1.2401817

Abstract

Electrodes formed from the chalcogenide glass, , are selective to cupric copper in concentrated solutions of chloride, bromide, nitrate, and acetate over the concentration range of 10⁻¹ to at least 10⁻⁶M copper. Nernstian slopes of approximately 30 mV/decade concentration changes were observed in nitrate and acetate solutions; slopes of 50 mV/decade were observed in 1M chloride and bromide electrolytes. A slope of 40 mV/decade was observed in 0.1M chloride solution. The active phase in the electrode material appears to be “sinnerite” ; data on the sensing mechanism are presented.

Keywords

GLASS PRODUCTS
ELECTROCHEMICAL ELECTRODES
COPPER ALLOYS
ELECTROLYTES
ELECTROCHEMICAL DEVICES
ARSENIC TRISULFIDE
SINNERITE
COPPER SULFIDE
POTENTIOSTATIC ACTIVATION
ELECTRODES
ION SELECTIVE

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