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Study on N,N′ O phenylenebissalicylideneimine Complexes of Hg(Ⅱ)as Carriers for Highly Selective Iodide Electrodes

Yi Bing 1, Wang Huanlong 1,Yuan Ruo 2, Ou Yangze Ming 1,Shen Guoli 2, Yu Ruqin 2 (Applied Chemiclal Department of Xiangtan Institute of Machinery and Electricity 1, Xiangtan, 411101 \ Institue of Chemometrics and Chemical Sensing Technology 1, Hunan  
In this paper, a solvent polymeric membrance anion selective electrodes based on N,N′ O phenylenebissalicylidene imine complexes of Hg(Ⅱ) as carrier is developed. It showed that the electrod has high selectivity toward the iodide ion and demonstrates anti Hofmerister behaviour. The electrode exhibited a near Nernstian potentiometric response for 10 -2  ̄10 -6 mol/L I - with a detection limit of 3.98×10 -7 mol/L and a slope of 52 mV/pI -. The electrode has fast response time, fair stability and reproducibility. The selectivity secquence observed is iodidethiocyanatebromideperchloratechloridenitritenitratesulfate. The response mechanism of the electrode was also studied with the spectroscope and ac impedance techniques.
【Fund】: 湖南省自然科学基金
【CateGory Index】: O614.243
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