• 作者： 王宗耀 ; 施正雄
• 作者服務機構： 台灣師範大學化學系
• 中文摘要： An iron(III) ion selective PVC membrane electrode based on 1,7-dithia 12-crown-4 as a neutral carrier was prepared. Monovalent responses with a Nerstian slope of 56+1 mV/decade was observed for the Fe(III) ion-selective electrode within the concentration range 10/sup -3/-10/sup -5/ M Fe(NO/sub 3/)/ sub 3/. The monovalent responses may be attributed to the formation of Fe(OH)/sub 2//sup +/ or Fe(OH)/sub 2/(H/sub 2/O)/ sub 4//sup +/ species in aqueous solutions and the absorption of these ions into the PVC electrode membrane. The electrode exhibited good selectivity for Fe(III) in comparison with various alkali, alkali-earth and some heavy metal ions. The effects of the composition of the membrane, addition of STPB ( sodium tetraphenyl borate), the concentration of internal solution of the electrode and anions in the test solutions were discussed.
• 英文摘要： --
• 中文關鍵字： Iron Ion; Pvc Membrane Electrode; 1,7-Dithia 12-Crown-4
• 英文關鍵字： 鐵離子；PVC膜電極；1；7-二硫-12-冠-4；1；7-二硫-12-冠醚-4