✦ LIBER ✦
Sodium-selective electrodes based on PVC membranes containing bis[(3n+1)-crown-n] ether derivatives
✍ Scribed by N.G. Lukyanenko; N.Yu. Titova; O.S. Karpinchik; O.T. Melnik
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 236 KB
- Volume
- 259
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The catlomc selectlvlty and electrode characteristics of poly(vmy1 chloride) (PVC) membranes based on bls[(3n + 1)crown-n] ethers are dlscussed The electrodes exhibit Nernstlan responses over the sodium ion actlvlty range 1 X 10m5 -1 M and can be applied over the pH range 2-10 The sodium selectlvlty of the PVC membranes increases with decrease m the blscrown ether rmg size The membrane based on b&10-crown-3)-hexamethylenebls(3,6,10-trloxacycloundecane) has kpJK = 6 15 X 10m3 and the detectlon lrmlt for sodium cations IS (6 f 0 5) X low6 M