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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 12
BKCSDE 27(12)
December 20, 2006 

 
Title
Polymeric Iodide-ion Selective Electrodes Based on Urea Derivative as an Ionophore
Author
Dae-Cheol Jeong, Hyo Kyoung Lee, Seungwon Jeon*
Keywords
Polymeric membrane electrode, Urea derivative, Ionophore, Iodide-selective electrode
Abstract
The polymeric membrane electrodes based on urea derivative as an ionophore were prepared and studied for the iodide-ion selective electrode. This membrane exhibits a linear stable response over a wide concentration range (1.0 × 10-5~1.0 × 10-2) with a slope of -57.7 mV/decade, a detection limit of log[I-] = -5.63, and a selectivity coefficient for iodide against perchlorate anion (log KI-,jpot = -1.42). The selectivity series of the membrane gives the follow as I- > SCN-, Sal- > ClO4- > NO3- > Br- > NO2 - > Cl- > F-. The proposed electrode showed good selectivity and response for iodide anion over a wide variety of other anions in pH 5.0 buffer solutions.
Page
1985 - 1988
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