- 作者: --
- 作者服務機構: Food & Chemical Analysis Research Lab., Jahad-e-Daneshgahi, Urmia, Iran
- 中文摘要: A novel membrane sensor for selective monitoring of iodide, consisting of a triiodide-ketoconazole ion pair complex dispersed in a PVC matrix, plasticized with a mixture of 2-nitrophenyl octyl ether and dioctylphtalate with unique selectivity toward iodide ions, is described. The influence of membrane composition, pH of test solution and foreign ions on the electrode performance were investigated. The optimized membrane demonstrates a near-Nernstian response for iodide ions over a wide linear range from 1.0× 10-2 to 1.0 ’ 10-5 M, at 25 ± 1°C. The electrode could be used over a wide pH range 3-10 and has the advantages of high selectivity, fast response time and good lifetime (over 4 months). It was successfully used as indicator electrode in potentiometric titrations and direct potentiometric assay of iodide ions.
- 英文摘要: --
- 中文關鍵字: Ion-selective electrode; Triiodide-ketoconazole ion pair; Iodide; Potentiometry.
- 英文關鍵字: --