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KMID : 1059520110550010063
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Journal of the Korean Chemical Society
2011 Volume.55 No. 1 p.63 ~ p.69
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Construction of a Silver(I) Ion-Selective Electrode Using Amine Phenol Ligand as Carrier and the Selective Determination of Silver in Actual Samples
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Xu Wen-Ju
Chai Ya-Qin
Yuan, Ruo
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Abstract
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This work discusses the fabrication, development and potential response behaviors of Ag+ ion-selective electrodes (Ag+-ISE) based on N,N’-bis(2-hydroxybenzyl)-1,3-diaminopropane (L1) and N,N’-bis(2-hydroxybenzyl)-2,2-dimethyl-1,3-diaminopropane (L2) as carriers. The observations indicated that the resulting electrode based on L1 toward Ag+ showed stable near-Nernst slope approaching 58.7 mV/dec and the optimum potential response characteristics in a linear range at least five orders of magnitude with a detection limit of 1.0×10??M. The proposed electrode displayed the preferential selectivity to Ag+ against other tested cations. The excellent potential analytical characteristics could lead to the successful applications of silver assay in significant real samples, indicating that the proposed Ag+-ISE showed a significant advancement of measurement capabilities. But for the electrode based on L2, the poor potential response characteristics were observed in total experiment process.
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KEYWORD
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Ion-selective electrode, Silver(I) ion, Potential response, N, N’-bis(2-hydroxybenzyl)-1, 3-diaminopropane, N, N’-bis(2-hydroxybenzyl)-2, 2-dimethyl-1, 3-diaminopropane
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