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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 5
BKCSDE 25(5)
May 20, 2004

Title	UO₂²⁺ Ion-Selective Membrane Electrode Based on a Naphthol-Derivative Schiff\'s Base 2,2\'-[1,2-Ethandiyl bis(nitriloethylidene)]bis(1-naphthalene)
Author	Mojtaba Shamsipur*, Mahboubeh Saeidi, Abdullah Yari, Ali Yaganeh-Faal, Mohammad Hossein Mashhadizadeh, Gholamhasan Azimi, Hossein Naeimi, Hashem Sharghi
Keywords	UO2 2+ ion-selective electrode, PVC membrane, Schiff's base, Potentiometry
Abstract	A new PVC membrane electrode for UO2 2+ ion based on 2,2'-[1,2-ethanediyl bis (nitriloethylidene)]bis(1-naphthalene) as a suitable ionophore was prepared. The electrode exhibites a Nernstian response for UO2 2+ ion over a wide concentration range (1.0 × 10?1-1.0 × 10?7 M) with a slope of 28.5 ± 0.8 mV/decade. The limit of detection is 7.0 × 10?8 M. The electrode has a response time of < 20 s and a useful working pH range of 3-4. The proposed membrane sensor shows good discriminating abilities towards UO2 2+ ion with regard to several alkali, alkaline earth transition and heavy metal ions. It was successfully used to the recovery of uranyl ion from, tap water and, as an indicator electrode, in potentiometric titration of UO2 2+ ion with Piroxycam.
Page	629 - 0
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