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http://dx.doi.org/10.5012/bkcs.2003.24.1.023

Titanium Acetylacetonate as an Excellent Ion-Carrier in Construction of Iodide Sensor  

Ganjali, Mohammad Reza (Department of Chemistry, Tehran University)
Daftari, Azadeh (Department of Chemistry, Tehran University)
Mizani, Farhang (Department of Chemistry, Tehran University)
Salavati-Niasari, Masoud (Department of Chemistry, Kashan University)
Publication Information
Bulletin of the Korean Chemical Society / v.24, no.1, 2003 , pp. 23-26 More about this Journal
Abstract
Titanium acetylacetonate was used in the construction of a PVC-based membrane electrode. This sensor shows very good selectivity for iodide ion over a wide variety of common inorganic and organic anions. It exhibits Nernstian behavior with a slope of 59.1 mV per decade. The working concentration ranges of the sensor are . The response time of the sensor is very fast (<8 s), and can be used for at least twelve weeks in the pH range of 4.0-9.2. The best performance was obtained with a membrane composition of 30% PVC, 65% dibutylphthalate, 3% titanium acetylacetonate and 2% hexadecyltrimethylammonium bromide. The proposed sensor was successfully applied as an indicator electrode for titration of iodide with silver ion.
Keywords
Titanium acetylacetonate; Iodide sensor; Potentiometry; PVC;
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