Ghauri M S, Thomas J D
School of Chemistry and Applied Chemistry, University of Wales, Cardiff, UK.
Analyst. 1994 Nov;119(11):2323-6. doi: 10.1039/an9941902323.
A macrotetrolide nonactin-based ammonium ionophore (AI) preparation containing 25% nonactin optimized for use in liquid membrane ion-selective electrodes was investigated for its possible use in poly(vinyl chloride) (PVC) matrix membrane-type electrodes. Nine different plasticizing solvent mediators were employed in the ammonium ion-selective membranes with PVC and the AI preparation. Near Nernstian responses were observed in aqueous solution with electrodes fabricated with dioctyl sebacate-, 2-nitrophenyl phenyl ether-, dibutyl sebacate-, trioctyl phosphate-, dioctyl adipate-, dioctyl phenyl phosphonate- and 2-nitrophenyl octyl ether-plasticized membranes. The responses of these electrodes were found to improve in the presence of a background concentration of non-interfering calcium ions.
研究了一种基于大环四内酯类缬氨霉素的铵离子载体（AI）制剂，其含有25%的缬氨霉素，针对用于液膜离子选择电极进行了优化，以探讨其在聚氯乙烯（PVC）基质膜型电极中的可能用途。在含PVC和AI制剂的铵离子选择膜中使用了九种不同的增塑溶剂介质。用癸二酸二辛酯、2-硝基苯基苯基醚、癸二酸二丁酯、磷酸三辛酯、己二酸二辛酯、二辛基苯基膦酸酯和2-硝基苯基辛基醚增塑的膜制成的电极在水溶液中观察到接近能斯特响应。发现这些电极在存在背景浓度的非干扰钙离子时响应有所改善。
