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增塑剂对1,1,1-三[1′-(2′-氧杂-4′-氧代-5′-氮杂-5′-甲基)十二烷基]丙烷PVC膜钠离子电极性能的影响
THE EFFECTS OF PLASTICIZERS ON THE PERFORMANCE OF PVC MEMBRANE SODIUM ELECTRODE BASED ON 1,1,1-TRIS[1′-(2′-OXA-4′-OXO-5′AZA 5′-METHYL)DODECYL]PROPANE
【摘要】 <正> 以1,1,1-三[1′-（2′-氧杂-4′-氧代-5′-氮杂-5′-甲基）十二烷基]丙烷（即ETH 227,Fluka No.71732）为中性载体的钠离子选择电极由于具有较强的抗钾离子干扰的能力,因而颇受注意。Guggi等首先用邻硝基苯辛醚和癸二酸二丁酯增塑,以合成的ETH227制成了K（Na）+,K+pot,<<10-2的PVC膜钠离子电极.Jenny等以癸二酸二异辛酯为增塑剂,
【Abstract】 The effects of plasticizers and additives on the performance of PVC membrane sodium electrodes based on the title comPound, ETH 227,were investigated. It is shown that electrode with o-nitrophenyl octyl ether（2-NPOE） as plasticizer has the leastK+(=3x10-3, but the interference of lipophilic anions or divalent cations is serious, the limit of Nernst resPonse is 3×10-4 mol·dm-3 NaCl. The linear response range of the electrode with didecyl phthalate as plasticiser, is from 3x10-5 to 1 mol.dm-3 NaCl,and K< 10-2. incorporating NaSCN would lower the internal resistance of membrane and imProVe the Interference-free ability for lipoPhilie anions.
【Key words】 Sodium ion-selective electrode Plasticizer Polyvinyl chloride membrane；
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,1988年03期
- 【被引频次】11
- 【下载频次】53