- 作者: Khalil Farhadi
- 作者服務機構: Department of Chemistry, Faculty of Science, Urmia University, Urmia, Iran
- 中文摘要: A novel triiodide sensor based on (tetrachlorophenylporphyrinato) manganese(III) acetate is described. The electrode is prepared by incorporating the ionophores into plasticized PVC membrane, which is directly coated on the surface of a graphite electrode. The resulting electrode has a linear dynamic range between 1.0 ’ 10-1 and 7.9 ’ 10-6 M with a near-Nernstian slope of -66.5 ± 1.0 mV per decade and a detection limit of 6.0 ’ 10-6 M. The influences of lipophilic additives on the response properties of the electrode were investigated. The proposed sensor revealed high selectivity for triiodide over a wide variety of other anions and could be used in a pH range 2-9. The electrode can be used for at least 3 months without any considerable divergence in potential. It was applied as indicator electrode in potentiometric titration of ascorbic acid and triiodide ions.
- 英文摘要: --
- 中文關鍵字: Coated triiodide selective electrode; PVC membrane coated graphite; (Tetrachlorophenylporphyrinato) manganese(III) acetate; Potentiometry.
- 英文關鍵字: Coated triiodide selective electrode; PVC membrane coated graphite; (Tetrachlorophenylporphyrinato) manganese(III) acetate; Potentiometry.