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

Chinese Journal of Applied Chemistry ›› 1988, Vol. 0 ›› Issue (3): 77-80.

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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

Qian Guoying¹, Wang Ruiling¹, Wu Guoliang¹, Tan Ganzu², Xu Junzhe², Jiao Tianquan²

1. Qinghai Institute of Salt Lake, Academia Sinica, Xining;
2. Lanzhou Institute of Chemical Physics, Academia Sinica

Received:1987-08-18 Revised:1987-12-02 Published:1988-06-10 Online:1988-06-10

Abstract

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 least K_Na,+^pot_K+(=3?10^-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 3?10^-4 to 1 mol·dm^-3 NaCl,and K_Na,+^pot_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

Qian Guoying, Wang Ruiling, Wu Guoliang, Tan Ganzu, Xu Junzhe, Jiao Tianquan. 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[J]. Chinese Journal of Applied Chemistry, 1988, 0(3): 77-80.

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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

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