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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 22, Number 4
BKCSDE 22(4)
April 20, 2001 

Polymeric Membrane Sodium Ion-Selective Electrodes Based on Calix[4]arene Triesters
Yoon Duck Kim, Haesang Jeong, Sung Ok Kang, Kye Chun Nam, Seungwon Jeon
Calix[4]arene, Calix[4]quinone, PVC membrane electrode, Ion selective electrode, Sodium ion.
New lipophilic triesters of calix[4]arene and calix[4]quinone are investigated as sodium ion-selective ionophores in poly(vinyl chloride) membrane electrodes. For an ion selective electrode based on calix[4]arene triester I, the linear response is 1 × 10-3.5 to 1× 10-1 M of Na+ concentrations. The selectivity coefficients for sodium ion over alkali metal and ammonium ions are determined. The detection limit (logaNa+ = -4.50) and the selectivity coefficient (logKNa+,K+pot = -1.86) are obtained for polymeric membrane electrode containing calix[4]arene triester I.
405 - 408
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