| 摘要 |
PURPOSE:To obtain an indicated value proportional directly to ammonia concn. by incorporation the ionophore of ammonium ion into a voltammetry electrode consisting of a composite high polymer material formed by mixing a solvent with a high-polymer material. CONSTITUTION:An electrode W is constituted of a glass tube 1, a nylon stocking 2 fixed by a heat shrinkable tube 6 and the composite high-polymer material 3. The material 3 is formed by mixing, for example, 2g PVC with 10ml nitroben zene which is a solvent and adding 0.1moldm<-3> tetrabutyl ammonium tetraphenyl borate as a supporting electrolyte and 0.05moldm<-3> dibenzo-18-crown-6 as the ionophore of ammonium ion thereto. After such material 3 is mounted, 0.1 moldm<-3> tetrabutyl ammonium chloride soln. 4 is filled as the inside liquid of the electrode into the glass tube 1 and a silver-silver chloride electrode 5 is immersed in the liquid so as to communicate the same with the outside. |
